./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash d40980d2c8614c94b54cd9b1a78f16d5c08e5a02579fe7ca6623a61adbb8dfb6 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:21:21,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:21:21,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 22:21:21,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:21:21,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:21:21,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:21:21,366 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:21:21,367 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:21:21,367 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:21:21,372 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:21:21,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:21:21,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:21:21,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:21:21,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:21:21,375 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:21:21,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:21:21,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:21:21,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:21:21,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:21:21,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:21:21,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:21:21,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:21:21,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:21:21,376 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:21:21,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:21:21,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:21:21,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:21:21,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:21:21,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:21:21,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:21:21,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:21:21,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:21:21,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:21:21,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:21:21,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:21:21,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:21:21,380 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:21:21,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:21:21,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:21:21,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d40980d2c8614c94b54cd9b1a78f16d5c08e5a02579fe7ca6623a61adbb8dfb6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 22:21:21,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:21:21,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:21:21,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:21:21,622 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:21:21,623 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:21:21,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c [2023-11-22 22:21:22,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:21:22,861 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:21:22,862 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c [2023-11-22 22:21:22,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc53e38bb/582fee3f52a040d3a66dadcf081dc5a3/FLAGef159c4b1 [2023-11-22 22:21:22,906 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc53e38bb/582fee3f52a040d3a66dadcf081dc5a3 [2023-11-22 22:21:22,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:21:22,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:21:22,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:21:22,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:21:22,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:21:22,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:21:22" (1/1) ... [2023-11-22 22:21:22,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3513ec42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:22, skipping insertion in model container [2023-11-22 22:21:22,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:21:22" (1/1) ... [2023-11-22 22:21:22,941 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:21:23,045 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c[1174,1187] [2023-11-22 22:21:23,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:21:23,163 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:21:23,171 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c[1174,1187] [2023-11-22 22:21:23,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:21:23,290 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:21:23,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23 WrapperNode [2023-11-22 22:21:23,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:21:23,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:21:23,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:21:23,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:21:23,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,454 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2193 [2023-11-22 22:21:23,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:21:23,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:21:23,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:21:23,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:21:23,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,491 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,587 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-22 22:21:23,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:21:23,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:21:23,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:21:23,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:21:23,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (1/1) ... [2023-11-22 22:21:23,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:21:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:23,757 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 22:21:23,765 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 22:21:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:21:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 22:21:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:21:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:21:23,985 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:21:23,987 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:21:25,126 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:21:25,180 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:21:25,184 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 22:21:25,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:21:25 BoogieIcfgContainer [2023-11-22 22:21:25,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:21:25,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:21:25,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:21:25,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:21:25,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:21:22" (1/3) ... [2023-11-22 22:21:25,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36480643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:21:25, skipping insertion in model container [2023-11-22 22:21:25,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:23" (2/3) ... [2023-11-22 22:21:25,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36480643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:21:25, skipping insertion in model container [2023-11-22 22:21:25,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:21:25" (3/3) ... [2023-11-22 22:21:25,193 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.adding.1.prop1-back-serstep.c [2023-11-22 22:21:25,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:21:25,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:21:25,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:21:25,278 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;@3c288c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:21:25,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:21:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 512 states have (on average 1.671875) internal successors, (856), 513 states have internal predecessors, (856), 0 states have call successors, (0), 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 22:21:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-22 22:21:25,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:25,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:25,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:25,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:25,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1269485081, now seen corresponding path program 1 times [2023-11-22 22:21:25,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:25,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144551552] [2023-11-22 22:21:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:25,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:25,999 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 22:21:26,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144551552] [2023-11-22 22:21:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144551552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:26,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:26,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:26,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393117646] [2023-11-22 22:21:26,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:26,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:21:26,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:26,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:21:26,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:21:26,042 INFO L87 Difference]: Start difference. First operand has 514 states, 512 states have (on average 1.671875) internal successors, (856), 513 states have internal predecessors, (856), 0 states have call successors, (0), 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 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:21:26,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:26,595 INFO L93 Difference]: Finished difference Result 1470 states and 2454 transitions. [2023-11-22 22:21:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:26,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-11-22 22:21:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:26,608 INFO L225 Difference]: With dead ends: 1470 [2023-11-22 22:21:26,608 INFO L226 Difference]: Without dead ends: 990 [2023-11-22 22:21:26,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:21:26,614 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 2389 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:26,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 1949 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:21:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-22 22:21:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 560. [2023-11-22 22:21:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.663685152057245) internal successors, (930), 559 states have internal predecessors, (930), 0 states have call successors, (0), 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 22:21:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 930 transitions. [2023-11-22 22:21:26,663 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 930 transitions. Word has length 84 [2023-11-22 22:21:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:26,664 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 930 transitions. [2023-11-22 22:21:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:21:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 930 transitions. [2023-11-22 22:21:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-22 22:21:26,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:26,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:26,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:21:26,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:26,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1387787353, now seen corresponding path program 1 times [2023-11-22 22:21:26,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:26,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535843633] [2023-11-22 22:21:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:26,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:26,920 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 22:21:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:26,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535843633] [2023-11-22 22:21:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535843633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:26,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:26,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:21:26,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066993409] [2023-11-22 22:21:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:26,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:21:26,927 INFO L87 Difference]: Start difference. First operand 560 states and 930 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:21:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:27,274 INFO L93 Difference]: Finished difference Result 1492 states and 2477 transitions. [2023-11-22 22:21:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:21:27,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-22 22:21:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:27,277 INFO L225 Difference]: With dead ends: 1492 [2023-11-22 22:21:27,278 INFO L226 Difference]: Without dead ends: 1014 [2023-11-22 22:21:27,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:21:27,279 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 3142 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3142 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:27,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3142 Valid, 2257 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 22:21:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-22 22:21:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 565. [2023-11-22 22:21:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.6613475177304964) internal successors, (937), 564 states have internal predecessors, (937), 0 states have call successors, (0), 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 22:21:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 937 transitions. [2023-11-22 22:21:27,292 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 937 transitions. Word has length 85 [2023-11-22 22:21:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:27,293 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 937 transitions. [2023-11-22 22:21:27,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:21:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 937 transitions. [2023-11-22 22:21:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-22 22:21:27,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:27,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:27,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 22:21:27,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:27,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:27,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1912023503, now seen corresponding path program 1 times [2023-11-22 22:21:27,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:27,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810572724] [2023-11-22 22:21:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:27,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:27,598 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 22:21:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810572724] [2023-11-22 22:21:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810572724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:27,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:27,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:27,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310610901] [2023-11-22 22:21:27,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:27,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:21:27,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:27,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:21:27,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:21:27,601 INFO L87 Difference]: Start difference. First operand 565 states and 937 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 22:21:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:28,036 INFO L93 Difference]: Finished difference Result 1468 states and 2441 transitions. [2023-11-22 22:21:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:28,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-11-22 22:21:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:28,040 INFO L225 Difference]: With dead ends: 1468 [2023-11-22 22:21:28,040 INFO L226 Difference]: Without dead ends: 990 [2023-11-22 22:21:28,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:21:28,042 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 2379 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:28,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2379 Valid, 1949 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:21:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-22 22:21:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 566. [2023-11-22 22:21:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.6601769911504425) internal successors, (938), 565 states have internal predecessors, (938), 0 states have call successors, (0), 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 22:21:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 938 transitions. [2023-11-22 22:21:28,056 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 938 transitions. Word has length 86 [2023-11-22 22:21:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:28,057 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 938 transitions. [2023-11-22 22:21:28,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 22:21:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 938 transitions. [2023-11-22 22:21:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-22 22:21:28,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:28,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:28,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 22:21:28,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:28,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:28,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1974063117, now seen corresponding path program 1 times [2023-11-22 22:21:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046774094] [2023-11-22 22:21:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:28,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:28,244 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 22:21:28,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:28,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046774094] [2023-11-22 22:21:28,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046774094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:28,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:28,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:21:28,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138044933] [2023-11-22 22:21:28,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:28,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:28,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:28,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:21:28,248 INFO L87 Difference]: Start difference. First operand 566 states and 938 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 22:21:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:28,715 INFO L93 Difference]: Finished difference Result 1492 states and 2475 transitions. [2023-11-22 22:21:28,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:21:28,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-11-22 22:21:28,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:28,718 INFO L225 Difference]: With dead ends: 1492 [2023-11-22 22:21:28,718 INFO L226 Difference]: Without dead ends: 1014 [2023-11-22 22:21:28,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:21:28,720 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 2383 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:28,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 2881 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:21:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-22 22:21:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 574. [2023-11-22 22:21:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.6579406631762652) internal successors, (950), 573 states have internal predecessors, (950), 0 states have call successors, (0), 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 22:21:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 950 transitions. [2023-11-22 22:21:28,730 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 950 transitions. Word has length 86 [2023-11-22 22:21:28,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:28,730 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 950 transitions. [2023-11-22 22:21:28,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 22:21:28,731 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 950 transitions. [2023-11-22 22:21:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 22:21:28,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:28,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:28,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 22:21:28,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:28,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 295592119, now seen corresponding path program 1 times [2023-11-22 22:21:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:28,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094061812] [2023-11-22 22:21:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:28,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:29,009 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 22:21:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:29,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094061812] [2023-11-22 22:21:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094061812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:29,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:29,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461254980] [2023-11-22 22:21:29,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:29,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:21:29,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:21:29,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:21:29,012 INFO L87 Difference]: Start difference. First operand 574 states and 950 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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 22:21:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:29,464 INFO L93 Difference]: Finished difference Result 1468 states and 2439 transitions. [2023-11-22 22:21:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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 87 [2023-11-22 22:21:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:29,467 INFO L225 Difference]: With dead ends: 1468 [2023-11-22 22:21:29,467 INFO L226 Difference]: Without dead ends: 990 [2023-11-22 22:21:29,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:21:29,469 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 2368 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:29,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 1949 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:21:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-22 22:21:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 575. [2023-11-22 22:21:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.656794425087108) internal successors, (951), 574 states have internal predecessors, (951), 0 states have call successors, (0), 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 22:21:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 951 transitions. [2023-11-22 22:21:29,485 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 951 transitions. Word has length 87 [2023-11-22 22:21:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:29,486 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 951 transitions. [2023-11-22 22:21:29,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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 22:21:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 951 transitions. [2023-11-22 22:21:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 22:21:29,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:29,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 22:21:29,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:29,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash -522056331, now seen corresponding path program 1 times [2023-11-22 22:21:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:29,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324999106] [2023-11-22 22:21:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:29,660 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 22:21:29,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:29,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324999106] [2023-11-22 22:21:29,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324999106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:29,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:29,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:21:29,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260706552] [2023-11-22 22:21:29,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:29,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:29,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:21:29,663 INFO L87 Difference]: Start difference. First operand 575 states and 951 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 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 22:21:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:30,142 INFO L93 Difference]: Finished difference Result 1492 states and 2473 transitions. [2023-11-22 22:21:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:21:30,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 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 87 [2023-11-22 22:21:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:30,146 INFO L225 Difference]: With dead ends: 1492 [2023-11-22 22:21:30,146 INFO L226 Difference]: Without dead ends: 1014 [2023-11-22 22:21:30,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:21:30,147 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 2374 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2374 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:30,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2374 Valid, 2883 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:21:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-22 22:21:30,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 580. [2023-11-22 22:21:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.6545768566493955) internal successors, (958), 579 states have internal predecessors, (958), 0 states have call successors, (0), 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 22:21:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 958 transitions. [2023-11-22 22:21:30,156 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 958 transitions. Word has length 87 [2023-11-22 22:21:30,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:30,156 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 958 transitions. [2023-11-22 22:21:30,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 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 22:21:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 958 transitions. [2023-11-22 22:21:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-22 22:21:30,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:30,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:30,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 22:21:30,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:30,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:30,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1557021119, now seen corresponding path program 1 times [2023-11-22 22:21:30,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:30,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565310197] [2023-11-22 22:21:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:30,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:30,313 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 22:21:30,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:30,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565310197] [2023-11-22 22:21:30,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565310197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:30,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:30,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:30,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839736345] [2023-11-22 22:21:30,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:30,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:30,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:30,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:30,315 INFO L87 Difference]: Start difference. First operand 580 states and 958 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 22:21:30,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:30,332 INFO L93 Difference]: Finished difference Result 584 states and 962 transitions. [2023-11-22 22:21:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:21:30,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-11-22 22:21:30,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:30,334 INFO L225 Difference]: With dead ends: 584 [2023-11-22 22:21:30,334 INFO L226 Difference]: Without dead ends: 582 [2023-11-22 22:21:30,334 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 22:21:30,335 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:30,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2542 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:30,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-22 22:21:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2023-11-22 22:21:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.6523235800344234) internal successors, (960), 581 states have internal predecessors, (960), 0 states have call successors, (0), 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 22:21:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 960 transitions. [2023-11-22 22:21:30,342 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 960 transitions. Word has length 88 [2023-11-22 22:21:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:30,343 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 960 transitions. [2023-11-22 22:21:30,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 22:21:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 960 transitions. [2023-11-22 22:21:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-22 22:21:30,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:30,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:30,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 22:21:30,344 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:30,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1021289005, now seen corresponding path program 1 times [2023-11-22 22:21:30,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:30,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161865702] [2023-11-22 22:21:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:30,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:30,450 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 22:21:30,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:30,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161865702] [2023-11-22 22:21:30,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161865702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:30,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:30,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:30,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107051168] [2023-11-22 22:21:30,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:30,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:30,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:30,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:30,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:30,452 INFO L87 Difference]: Start difference. First operand 582 states and 960 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 22:21:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:30,471 INFO L93 Difference]: Finished difference Result 1065 states and 1762 transitions. [2023-11-22 22:21:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:21:30,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-11-22 22:21:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:30,473 INFO L225 Difference]: With dead ends: 1065 [2023-11-22 22:21:30,473 INFO L226 Difference]: Without dead ends: 585 [2023-11-22 22:21:30,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:21:30,474 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:30,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-22 22:21:30,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 584. [2023-11-22 22:21:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.6500857632933104) internal successors, (962), 583 states have internal predecessors, (962), 0 states have call successors, (0), 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 22:21:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 962 transitions. [2023-11-22 22:21:30,516 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 962 transitions. Word has length 89 [2023-11-22 22:21:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:30,516 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 962 transitions. [2023-11-22 22:21:30,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 22:21:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 962 transitions. [2023-11-22 22:21:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-22 22:21:30,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:30,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:21:30,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 22:21:30,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:30,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1805620069, now seen corresponding path program 1 times [2023-11-22 22:21:30,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:30,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678833409] [2023-11-22 22:21:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:30,659 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 22:21:30,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678833409] [2023-11-22 22:21:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678833409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:30,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:30,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601387927] [2023-11-22 22:21:30,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:30,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:21:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:21:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:21:30,662 INFO L87 Difference]: Start difference. First operand 584 states and 962 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 22:21:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:30,709 INFO L93 Difference]: Finished difference Result 1554 states and 2574 transitions. [2023-11-22 22:21:30,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:21:30,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-22 22:21:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:30,712 INFO L225 Difference]: With dead ends: 1554 [2023-11-22 22:21:30,712 INFO L226 Difference]: Without dead ends: 1072 [2023-11-22 22:21:30,713 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 22:21:30,714 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 3256 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:30,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3256 Valid, 2668 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2023-11-22 22:21:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 599. [2023-11-22 22:21:30,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.648829431438127) internal successors, (986), 598 states have internal predecessors, (986), 0 states have call successors, (0), 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 22:21:30,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 986 transitions. [2023-11-22 22:21:30,725 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 986 transitions. Word has length 90 [2023-11-22 22:21:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:30,725 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 986 transitions. [2023-11-22 22:21:30,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 22:21:30,725 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 986 transitions. [2023-11-22 22:21:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-11-22 22:21:30,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:30,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:30,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 22:21:30,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:30,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1099627728, now seen corresponding path program 1 times [2023-11-22 22:21:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:30,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674913981] [2023-11-22 22:21:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:30,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-22 22:21:31,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:31,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674913981] [2023-11-22 22:21:31,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674913981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:31,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:31,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:21:31,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087865653] [2023-11-22 22:21:31,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:31,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:21:31,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:31,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:21:31,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:21:31,412 INFO L87 Difference]: Start difference. First operand 599 states and 986 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 22:21:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:31,445 INFO L93 Difference]: Finished difference Result 1559 states and 2579 transitions. [2023-11-22 22:21:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:31,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 395 [2023-11-22 22:21:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:31,449 INFO L225 Difference]: With dead ends: 1559 [2023-11-22 22:21:31,449 INFO L226 Difference]: Without dead ends: 1077 [2023-11-22 22:21:31,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:21:31,450 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 787 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:31,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 3580 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-11-22 22:21:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 599. [2023-11-22 22:21:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.648829431438127) internal successors, (986), 598 states have internal predecessors, (986), 0 states have call successors, (0), 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 22:21:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 986 transitions. [2023-11-22 22:21:31,461 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 986 transitions. Word has length 395 [2023-11-22 22:21:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:31,462 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 986 transitions. [2023-11-22 22:21:31,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 22:21:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 986 transitions. [2023-11-22 22:21:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 22:21:31,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:31,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:31,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 22:21:31,466 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:31,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash 935601442, now seen corresponding path program 1 times [2023-11-22 22:21:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:31,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527935490] [2023-11-22 22:21:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-22 22:21:32,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:32,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527935490] [2023-11-22 22:21:32,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527935490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:32,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:32,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:32,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032061362] [2023-11-22 22:21:32,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:32,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:32,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:32,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:32,066 INFO L87 Difference]: Start difference. First operand 599 states and 986 transitions. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 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 22:21:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:32,096 INFO L93 Difference]: Finished difference Result 1561 states and 2581 transitions. [2023-11-22 22:21:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 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 396 [2023-11-22 22:21:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:32,101 INFO L225 Difference]: With dead ends: 1561 [2023-11-22 22:21:32,101 INFO L226 Difference]: Without dead ends: 1076 [2023-11-22 22:21:32,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:21:32,102 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 784 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:32,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 2784 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-11-22 22:21:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 601. [2023-11-22 22:21:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.6466666666666667) internal successors, (988), 600 states have internal predecessors, (988), 0 states have call successors, (0), 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 22:21:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 988 transitions. [2023-11-22 22:21:32,114 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 988 transitions. Word has length 396 [2023-11-22 22:21:32,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:32,114 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 988 transitions. [2023-11-22 22:21:32,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 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 22:21:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 988 transitions. [2023-11-22 22:21:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-22 22:21:32,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:32,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:32,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 22:21:32,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:32,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:32,119 INFO L85 PathProgramCache]: Analyzing trace with hash -643407320, now seen corresponding path program 1 times [2023-11-22 22:21:32,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:32,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652471902] [2023-11-22 22:21:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:32,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:32,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:32,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652471902] [2023-11-22 22:21:32,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652471902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:32,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:32,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:32,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352685702] [2023-11-22 22:21:32,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:32,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:32,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:32,845 INFO L87 Difference]: Start difference. First operand 601 states and 988 transitions. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 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 22:21:33,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:33,118 INFO L93 Difference]: Finished difference Result 1087 states and 1792 transitions. [2023-11-22 22:21:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:21:33,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 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 397 [2023-11-22 22:21:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:33,120 INFO L225 Difference]: With dead ends: 1087 [2023-11-22 22:21:33,120 INFO L226 Difference]: Without dead ends: 601 [2023-11-22 22:21:33,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:33,121 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 802 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:33,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1304 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 22:21:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-22 22:21:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2023-11-22 22:21:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.645) internal successors, (987), 600 states have internal predecessors, (987), 0 states have call successors, (0), 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 22:21:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 987 transitions. [2023-11-22 22:21:33,130 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 987 transitions. Word has length 397 [2023-11-22 22:21:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:33,131 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 987 transitions. [2023-11-22 22:21:33,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 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 22:21:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 987 transitions. [2023-11-22 22:21:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-11-22 22:21:33,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:33,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:33,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 22:21:33,135 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:33,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:33,136 INFO L85 PathProgramCache]: Analyzing trace with hash -789791391, now seen corresponding path program 1 times [2023-11-22 22:21:33,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:33,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309025232] [2023-11-22 22:21:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:33,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-22 22:21:33,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:33,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309025232] [2023-11-22 22:21:33,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309025232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:33,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:33,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:21:33,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739954305] [2023-11-22 22:21:33,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:33,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:21:33,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:21:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:21:33,775 INFO L87 Difference]: Start difference. First operand 601 states and 987 transitions. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 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 22:21:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:33,809 INFO L93 Difference]: Finished difference Result 1567 states and 2584 transitions. [2023-11-22 22:21:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 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 398 [2023-11-22 22:21:33,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:33,812 INFO L225 Difference]: With dead ends: 1567 [2023-11-22 22:21:33,812 INFO L226 Difference]: Without dead ends: 1077 [2023-11-22 22:21:33,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:21:33,814 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 780 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:33,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 3550 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-11-22 22:21:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 603. [2023-11-22 22:21:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.6428571428571428) internal successors, (989), 602 states have internal predecessors, (989), 0 states have call successors, (0), 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 22:21:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 989 transitions. [2023-11-22 22:21:33,825 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 989 transitions. Word has length 398 [2023-11-22 22:21:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:33,825 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 989 transitions. [2023-11-22 22:21:33,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 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 22:21:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 989 transitions. [2023-11-22 22:21:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-22 22:21:33,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:33,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:33,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 22:21:33,829 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:33,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1442779887, now seen corresponding path program 1 times [2023-11-22 22:21:33,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:33,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774250675] [2023-11-22 22:21:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:33,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-22 22:21:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774250675] [2023-11-22 22:21:34,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774250675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:34,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:34,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:21:34,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649453197] [2023-11-22 22:21:34,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:34,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:21:34,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:34,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:21:34,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:21:34,415 INFO L87 Difference]: Start difference. First operand 603 states and 989 transitions. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 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 22:21:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:34,451 INFO L93 Difference]: Finished difference Result 1573 states and 2590 transitions. [2023-11-22 22:21:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 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 399 [2023-11-22 22:21:34,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:34,454 INFO L225 Difference]: With dead ends: 1573 [2023-11-22 22:21:34,454 INFO L226 Difference]: Without dead ends: 1078 [2023-11-22 22:21:34,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:21:34,456 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 777 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:34,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 3537 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2023-11-22 22:21:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 605. [2023-11-22 22:21:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.640728476821192) internal successors, (991), 604 states have internal predecessors, (991), 0 states have call successors, (0), 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 22:21:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 991 transitions. [2023-11-22 22:21:34,466 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 991 transitions. Word has length 399 [2023-11-22 22:21:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:34,466 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 991 transitions. [2023-11-22 22:21:34,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 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 22:21:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 991 transitions. [2023-11-22 22:21:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-11-22 22:21:34,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:34,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:34,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 22:21:34,470 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:34,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1582902213, now seen corresponding path program 1 times [2023-11-22 22:21:34,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:34,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307136567] [2023-11-22 22:21:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:34,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-22 22:21:34,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:34,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307136567] [2023-11-22 22:21:34,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307136567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:34,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:34,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:34,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198688778] [2023-11-22 22:21:34,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:34,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:34,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:34,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:34,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:34,993 INFO L87 Difference]: Start difference. First operand 605 states and 991 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 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 22:21:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:35,024 INFO L93 Difference]: Finished difference Result 1582 states and 2600 transitions. [2023-11-22 22:21:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:35,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 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 400 [2023-11-22 22:21:35,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:35,027 INFO L225 Difference]: With dead ends: 1582 [2023-11-22 22:21:35,027 INFO L226 Difference]: Without dead ends: 1082 [2023-11-22 22:21:35,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:21:35,030 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 772 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:35,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 2743 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-11-22 22:21:35,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 612. [2023-11-22 22:21:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.6366612111292962) internal successors, (1000), 611 states have internal predecessors, (1000), 0 states have call successors, (0), 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 22:21:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1000 transitions. [2023-11-22 22:21:35,040 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1000 transitions. Word has length 400 [2023-11-22 22:21:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:35,041 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 1000 transitions. [2023-11-22 22:21:35,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 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 22:21:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1000 transitions. [2023-11-22 22:21:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-11-22 22:21:35,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:35,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:35,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 22:21:35,045 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:35,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2065480645, now seen corresponding path program 1 times [2023-11-22 22:21:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712700636] [2023-11-22 22:21:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:21:35,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712700636] [2023-11-22 22:21:35,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712700636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:35,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:35,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:35,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036632847] [2023-11-22 22:21:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:35,515 INFO L87 Difference]: Start difference. First operand 612 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 22:21:35,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:35,543 INFO L93 Difference]: Finished difference Result 1574 states and 2583 transitions. [2023-11-22 22:21:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:21:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 401 [2023-11-22 22:21:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:35,547 INFO L225 Difference]: With dead ends: 1574 [2023-11-22 22:21:35,547 INFO L226 Difference]: Without dead ends: 1079 [2023-11-22 22:21:35,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:21:35,548 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 766 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 4066 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:35,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 4066 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2023-11-22 22:21:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 614. [2023-11-22 22:21:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.6345840130505709) internal successors, (1002), 613 states have internal predecessors, (1002), 0 states have call successors, (0), 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 22:21:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1002 transitions. [2023-11-22 22:21:35,558 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1002 transitions. Word has length 401 [2023-11-22 22:21:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:35,559 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1002 transitions. [2023-11-22 22:21:35,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 22:21:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1002 transitions. [2023-11-22 22:21:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-11-22 22:21:35,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:35,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:35,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 22:21:35,563 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:35,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:35,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1734508373, now seen corresponding path program 1 times [2023-11-22 22:21:35,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:35,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532814514] [2023-11-22 22:21:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:35,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 22:21:36,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:36,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532814514] [2023-11-22 22:21:36,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532814514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:36,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:36,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:36,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692681117] [2023-11-22 22:21:36,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:36,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:36,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:36,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:36,091 INFO L87 Difference]: Start difference. First operand 614 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 22:21:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:36,123 INFO L93 Difference]: Finished difference Result 1607 states and 2629 transitions. [2023-11-22 22:21:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 402 [2023-11-22 22:21:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:36,127 INFO L225 Difference]: With dead ends: 1607 [2023-11-22 22:21:36,127 INFO L226 Difference]: Without dead ends: 1094 [2023-11-22 22:21:36,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:21:36,128 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 768 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:36,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 2727 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-11-22 22:21:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 622. [2023-11-22 22:21:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 1.6296296296296295) internal successors, (1012), 621 states have internal predecessors, (1012), 0 states have call successors, (0), 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 22:21:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1012 transitions. [2023-11-22 22:21:36,139 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1012 transitions. Word has length 402 [2023-11-22 22:21:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:36,139 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 1012 transitions. [2023-11-22 22:21:36,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 22:21:36,140 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1012 transitions. [2023-11-22 22:21:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-11-22 22:21:36,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:36,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:36,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 22:21:36,145 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:36,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2034560545, now seen corresponding path program 1 times [2023-11-22 22:21:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111758903] [2023-11-22 22:21:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:36,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-22 22:21:36,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111758903] [2023-11-22 22:21:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111758903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:36,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:36,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:36,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626611943] [2023-11-22 22:21:36,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:36,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:36,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:36,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:36,641 INFO L87 Difference]: Start difference. First operand 622 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 22:21:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:36,683 INFO L93 Difference]: Finished difference Result 1625 states and 2651 transitions. [2023-11-22 22:21:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:36,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 403 [2023-11-22 22:21:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:36,686 INFO L225 Difference]: With dead ends: 1625 [2023-11-22 22:21:36,686 INFO L226 Difference]: Without dead ends: 1101 [2023-11-22 22:21:36,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:21:36,687 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 768 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:36,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 2717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:36,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2023-11-22 22:21:36,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 626. [2023-11-22 22:21:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.6256) internal successors, (1016), 625 states have internal predecessors, (1016), 0 states have call successors, (0), 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 22:21:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1016 transitions. [2023-11-22 22:21:36,698 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1016 transitions. Word has length 403 [2023-11-22 22:21:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:36,699 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 1016 transitions. [2023-11-22 22:21:36,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 22:21:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1016 transitions. [2023-11-22 22:21:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-11-22 22:21:36,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:36,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:36,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 22:21:36,703 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:36,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash 281231473, now seen corresponding path program 1 times [2023-11-22 22:21:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:36,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737673597] [2023-11-22 22:21:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:36,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-22 22:21:37,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737673597] [2023-11-22 22:21:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737673597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:37,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014143040] [2023-11-22 22:21:37,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:37,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:37,138 INFO L87 Difference]: Start difference. First operand 626 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 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 22:21:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:37,167 INFO L93 Difference]: Finished difference Result 1593 states and 2602 transitions. [2023-11-22 22:21:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:21:37,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 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 404 [2023-11-22 22:21:37,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:37,171 INFO L225 Difference]: With dead ends: 1593 [2023-11-22 22:21:37,171 INFO L226 Difference]: Without dead ends: 1091 [2023-11-22 22:21:37,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:21:37,172 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 760 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:37,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 4050 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2023-11-22 22:21:37,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 628. [2023-11-22 22:21:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.6236044657097288) internal successors, (1018), 627 states have internal predecessors, (1018), 0 states have call successors, (0), 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 22:21:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1018 transitions. [2023-11-22 22:21:37,181 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1018 transitions. Word has length 404 [2023-11-22 22:21:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:37,182 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1018 transitions. [2023-11-22 22:21:37,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 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 22:21:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1018 transitions. [2023-11-22 22:21:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-11-22 22:21:37,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:37,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:37,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 22:21:37,184 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:37,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash 289923593, now seen corresponding path program 1 times [2023-11-22 22:21:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091141274] [2023-11-22 22:21:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-22 22:21:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091141274] [2023-11-22 22:21:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091141274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:37,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:21:37,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:21:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147413928] [2023-11-22 22:21:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:37,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:21:37,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:21:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:21:37,654 INFO L87 Difference]: Start difference. First operand 628 states and 1018 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 22:21:37,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:37,685 INFO L93 Difference]: Finished difference Result 1649 states and 2675 transitions. [2023-11-22 22:21:37,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:21:37,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 405 [2023-11-22 22:21:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:37,689 INFO L225 Difference]: With dead ends: 1649 [2023-11-22 22:21:37,689 INFO L226 Difference]: Without dead ends: 1113 [2023-11-22 22:21:37,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:21:37,691 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 762 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:37,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 2701 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:21:37,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2023-11-22 22:21:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 636. [2023-11-22 22:21:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.6188976377952755) internal successors, (1028), 635 states have internal predecessors, (1028), 0 states have call successors, (0), 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 22:21:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1028 transitions. [2023-11-22 22:21:37,703 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1028 transitions. Word has length 405 [2023-11-22 22:21:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:37,704 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1028 transitions. [2023-11-22 22:21:37,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 22:21:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1028 transitions. [2023-11-22 22:21:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-11-22 22:21:37,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:37,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:37,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 22:21:37,707 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:37,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1655392139, now seen corresponding path program 1 times [2023-11-22 22:21:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:37,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179129005] [2023-11-22 22:21:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179129005] [2023-11-22 22:21:38,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179129005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:38,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390628471] [2023-11-22 22:21:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:38,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:38,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:38,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:38,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 22:21:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:38,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-22 22:21:38,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:21:39,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:21:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 22:21:39,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390628471] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:39,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:21:39,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 17] total 28 [2023-11-22 22:21:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282197891] [2023-11-22 22:21:39,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:21:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:21:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2023-11-22 22:21:39,535 INFO L87 Difference]: Start difference. First operand 636 states and 1028 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 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 22:21:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:39,749 INFO L93 Difference]: Finished difference Result 2644 states and 4317 transitions. [2023-11-22 22:21:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:21:39,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 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 406 [2023-11-22 22:21:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:39,756 INFO L225 Difference]: With dead ends: 2644 [2023-11-22 22:21:39,756 INFO L226 Difference]: Without dead ends: 2137 [2023-11-22 22:21:39,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2023-11-22 22:21:39,757 INFO L413 NwaCegarLoop]: 2521 mSDtfsCounter, 3958 mSDsluCounter, 6948 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3958 SdHoareTripleChecker+Valid, 9469 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:39,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3958 Valid, 9469 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:21:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2023-11-22 22:21:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 642. [2023-11-22 22:21:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.6162246489859595) internal successors, (1036), 641 states have internal predecessors, (1036), 0 states have call successors, (0), 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 22:21:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1036 transitions. [2023-11-22 22:21:39,773 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1036 transitions. Word has length 406 [2023-11-22 22:21:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:39,773 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 1036 transitions. [2023-11-22 22:21:39,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 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 22:21:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1036 transitions. [2023-11-22 22:21:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-11-22 22:21:39,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:39,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:39,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 22:21:39,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-22 22:21:39,990 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:39,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2048419149, now seen corresponding path program 1 times [2023-11-22 22:21:39,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:39,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719055218] [2023-11-22 22:21:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:39,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:40,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:40,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719055218] [2023-11-22 22:21:40,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719055218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:40,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381824604] [2023-11-22 22:21:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:40,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:40,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:40,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:40,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 22:21:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:40,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:21:40,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:41,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:21:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381824604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:41,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:21:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:21:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258945715] [2023-11-22 22:21:41,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:21:41,129 INFO L87 Difference]: Start difference. First operand 642 states and 1036 transitions. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 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 22:21:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:41,576 INFO L93 Difference]: Finished difference Result 1807 states and 2908 transitions. [2023-11-22 22:21:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:21:41,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 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 406 [2023-11-22 22:21:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:41,584 INFO L225 Difference]: With dead ends: 1807 [2023-11-22 22:21:41,584 INFO L226 Difference]: Without dead ends: 1297 [2023-11-22 22:21:41,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:21:41,586 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1536 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:41,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 3088 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:21:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2023-11-22 22:21:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 835. [2023-11-22 22:21:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 1.5875299760191846) internal successors, (1324), 834 states have internal predecessors, (1324), 0 states have call successors, (0), 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 22:21:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1324 transitions. [2023-11-22 22:21:41,600 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1324 transitions. Word has length 406 [2023-11-22 22:21:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:41,600 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1324 transitions. [2023-11-22 22:21:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 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 22:21:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1324 transitions. [2023-11-22 22:21:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-22 22:21:41,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:41,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:41,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 22:21:41,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-22 22:21:41,818 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:41,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1037621376, now seen corresponding path program 1 times [2023-11-22 22:21:41,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:41,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067621549] [2023-11-22 22:21:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067621549] [2023-11-22 22:21:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067621549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783672353] [2023-11-22 22:21:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:42,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:42,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:42,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:42,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 22:21:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:42,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:21:42,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:43,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:21:43,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783672353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:43,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:21:43,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:21:43,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13981808] [2023-11-22 22:21:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:43,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:43,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:43,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:43,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:21:43,213 INFO L87 Difference]: Start difference. First operand 835 states and 1324 transitions. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 22:21:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:43,766 INFO L93 Difference]: Finished difference Result 1850 states and 2984 transitions. [2023-11-22 22:21:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:21:43,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 407 [2023-11-22 22:21:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:43,769 INFO L225 Difference]: With dead ends: 1850 [2023-11-22 22:21:43,769 INFO L226 Difference]: Without dead ends: 1215 [2023-11-22 22:21:43,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:21:43,770 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1516 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:43,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 3296 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 22:21:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-22 22:21:43,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1030. [2023-11-22 22:21:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 1.6025267249757045) internal successors, (1649), 1029 states have internal predecessors, (1649), 0 states have call successors, (0), 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 22:21:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1649 transitions. [2023-11-22 22:21:43,785 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1649 transitions. Word has length 407 [2023-11-22 22:21:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:43,785 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1649 transitions. [2023-11-22 22:21:43,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 22:21:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1649 transitions. [2023-11-22 22:21:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-22 22:21:43,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:43,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:43,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 22:21:44,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:44,005 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:44,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash -958814463, now seen corresponding path program 1 times [2023-11-22 22:21:44,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:44,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169873155] [2023-11-22 22:21:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:44,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:44,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169873155] [2023-11-22 22:21:44,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169873155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:44,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959349991] [2023-11-22 22:21:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:44,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:44,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:44,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 22:21:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:44,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:21:44,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:45,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:21:45,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959349991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:45,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:21:45,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:21:45,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022084107] [2023-11-22 22:21:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:45,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:45,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:45,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:21:45,143 INFO L87 Difference]: Start difference. First operand 1030 states and 1649 transitions. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 22:21:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:45,598 INFO L93 Difference]: Finished difference Result 2816 states and 4525 transitions. [2023-11-22 22:21:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:21:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 407 [2023-11-22 22:21:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:45,603 INFO L225 Difference]: With dead ends: 2816 [2023-11-22 22:21:45,603 INFO L226 Difference]: Without dead ends: 1986 [2023-11-22 22:21:45,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:21:45,605 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1571 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:45,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 2659 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:21:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2023-11-22 22:21:45,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1421. [2023-11-22 22:21:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.5718309859154929) internal successors, (2232), 1420 states have internal predecessors, (2232), 0 states have call successors, (0), 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 22:21:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2232 transitions. [2023-11-22 22:21:45,625 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2232 transitions. Word has length 407 [2023-11-22 22:21:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:45,625 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 2232 transitions. [2023-11-22 22:21:45,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 22:21:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2232 transitions. [2023-11-22 22:21:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-11-22 22:21:45,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:45,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:45,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 22:21:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:45,845 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:45,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:45,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1451793278, now seen corresponding path program 1 times [2023-11-22 22:21:45,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:45,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689203708] [2023-11-22 22:21:45,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:45,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:46,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689203708] [2023-11-22 22:21:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689203708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542881522] [2023-11-22 22:21:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:46,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:46,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:46,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:46,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 22:21:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:46,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:21:46,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:47,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:21:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542881522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:47,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:21:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:21:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419763684] [2023-11-22 22:21:47,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:47,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:47,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:21:47,137 INFO L87 Difference]: Start difference. First operand 1421 states and 2232 transitions. Second operand has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 22:21:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:47,693 INFO L93 Difference]: Finished difference Result 3073 states and 4919 transitions. [2023-11-22 22:21:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:21:47,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 408 [2023-11-22 22:21:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:47,705 INFO L225 Difference]: With dead ends: 3073 [2023-11-22 22:21:47,706 INFO L226 Difference]: Without dead ends: 1982 [2023-11-22 22:21:47,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:21:47,710 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1294 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:47,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 3320 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 22:21:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-11-22 22:21:47,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1775. [2023-11-22 22:21:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 1.5907553551296505) internal successors, (2822), 1774 states have internal predecessors, (2822), 0 states have call successors, (0), 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 22:21:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2822 transitions. [2023-11-22 22:21:47,736 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2822 transitions. Word has length 408 [2023-11-22 22:21:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:47,736 INFO L495 AbstractCegarLoop]: Abstraction has 1775 states and 2822 transitions. [2023-11-22 22:21:47,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 22:21:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2822 transitions. [2023-11-22 22:21:47,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-11-22 22:21:47,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:47,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:47,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 22:21:47,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-22 22:21:47,957 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:47,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1815307803, now seen corresponding path program 1 times [2023-11-22 22:21:47,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:47,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554274587] [2023-11-22 22:21:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:48,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:48,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554274587] [2023-11-22 22:21:48,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554274587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:48,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382566953] [2023-11-22 22:21:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:48,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:48,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:48,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:48,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 22:21:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:48,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:21:49,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:49,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:21:49,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382566953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:49,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:21:49,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:21:49,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288155209] [2023-11-22 22:21:49,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:49,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:21:49,236 INFO L87 Difference]: Start difference. First operand 1775 states and 2822 transitions. Second operand has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 22:21:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:49,722 INFO L93 Difference]: Finished difference Result 4905 states and 7834 transitions. [2023-11-22 22:21:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:21:49,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 408 [2023-11-22 22:21:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:49,727 INFO L225 Difference]: With dead ends: 4905 [2023-11-22 22:21:49,728 INFO L226 Difference]: Without dead ends: 3460 [2023-11-22 22:21:49,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:21:49,729 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 2222 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:49,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2222 Valid, 2662 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:21:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2023-11-22 22:21:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 2579. [2023-11-22 22:21:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2578 states have (on average 1.5601241272304112) internal successors, (4022), 2578 states have internal predecessors, (4022), 0 states have call successors, (0), 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 22:21:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4022 transitions. [2023-11-22 22:21:49,759 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4022 transitions. Word has length 408 [2023-11-22 22:21:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:49,759 INFO L495 AbstractCegarLoop]: Abstraction has 2579 states and 4022 transitions. [2023-11-22 22:21:49,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 22:21:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4022 transitions. [2023-11-22 22:21:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-22 22:21:49,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:49,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:49,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 22:21:49,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-22 22:21:49,978 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:49,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash -940899406, now seen corresponding path program 1 times [2023-11-22 22:21:49,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:49,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598123101] [2023-11-22 22:21:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:49,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598123101] [2023-11-22 22:21:50,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598123101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278657383] [2023-11-22 22:21:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:50,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:50,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:50,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:50,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 22:21:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:50,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:21:50,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:51,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:21:51,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278657383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:51,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:21:51,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:21:51,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052698688] [2023-11-22 22:21:51,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:51,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:21:51,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:51,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:21:51,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:21:51,300 INFO L87 Difference]: Start difference. First operand 2579 states and 4022 transitions. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:21:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:51,886 INFO L93 Difference]: Finished difference Result 5455 states and 8677 transitions. [2023-11-22 22:21:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:21:51,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2023-11-22 22:21:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:51,891 INFO L225 Difference]: With dead ends: 5455 [2023-11-22 22:21:51,891 INFO L226 Difference]: Without dead ends: 3454 [2023-11-22 22:21:51,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:21:51,894 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 1462 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:51,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 3251 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 22:21:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2023-11-22 22:21:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3272. [2023-11-22 22:21:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3271 states have (on average 1.582696423112198) internal successors, (5177), 3271 states have internal predecessors, (5177), 0 states have call successors, (0), 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 22:21:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 5177 transitions. [2023-11-22 22:21:51,929 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 5177 transitions. Word has length 409 [2023-11-22 22:21:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:51,929 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 5177 transitions. [2023-11-22 22:21:51,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:21:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 5177 transitions. [2023-11-22 22:21:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-22 22:21:51,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:51,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:51,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 22:21:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:52,149 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:52,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1221870691, now seen corresponding path program 1 times [2023-11-22 22:21:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329347916] [2023-11-22 22:21:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:52,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329347916] [2023-11-22 22:21:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329347916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394688732] [2023-11-22 22:21:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:52,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:52,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:52,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:52,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 22:21:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:53,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-22 22:21:53,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:53,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:21:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394688732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:53,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:21:53,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2023-11-22 22:21:53,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4716359] [2023-11-22 22:21:53,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:53,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 22:21:53,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:53,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 22:21:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-11-22 22:21:53,930 INFO L87 Difference]: Start difference. First operand 3272 states and 5177 transitions. Second operand has 17 states, 17 states have (on average 24.058823529411764) internal successors, (409), 17 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:21:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:56,810 INFO L93 Difference]: Finished difference Result 17992 states and 29085 transitions. [2023-11-22 22:21:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-22 22:21:56,810 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 24.058823529411764) internal successors, (409), 17 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2023-11-22 22:21:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:56,837 INFO L225 Difference]: With dead ends: 17992 [2023-11-22 22:21:56,837 INFO L226 Difference]: Without dead ends: 15298 [2023-11-22 22:21:56,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=373, Invalid=1697, Unknown=0, NotChecked=0, Total=2070 [2023-11-22 22:21:56,846 INFO L413 NwaCegarLoop]: 2834 mSDtfsCounter, 6218 mSDsluCounter, 26732 mSDsCounter, 0 mSdLazyCounter, 8439 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6218 SdHoareTripleChecker+Valid, 29566 SdHoareTripleChecker+Invalid, 8449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 8439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:56,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6218 Valid, 29566 Invalid, 8449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 8439 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-22 22:21:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15298 states. [2023-11-22 22:21:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15298 to 5128. [2023-11-22 22:21:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5128 states, 5127 states have (on average 1.5964501657889605) internal successors, (8185), 5127 states have internal predecessors, (8185), 0 states have call successors, (0), 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 22:21:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5128 states to 5128 states and 8185 transitions. [2023-11-22 22:21:56,936 INFO L78 Accepts]: Start accepts. Automaton has 5128 states and 8185 transitions. Word has length 409 [2023-11-22 22:21:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:56,937 INFO L495 AbstractCegarLoop]: Abstraction has 5128 states and 8185 transitions. [2023-11-22 22:21:56,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 24.058823529411764) internal successors, (409), 17 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:21:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5128 states and 8185 transitions. [2023-11-22 22:21:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-22 22:21:56,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:56,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:56,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-22 22:21:57,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 22:21:57,159 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:57,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:57,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1464266075, now seen corresponding path program 1 times [2023-11-22 22:21:57,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:57,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909851299] [2023-11-22 22:21:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:57,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:21:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909851299] [2023-11-22 22:21:57,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909851299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:21:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363567203] [2023-11-22 22:21:57,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:57,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:21:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:21:57,777 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:21:57,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 22:21:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:21:58,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 124 conjunts are in the unsatisfiable core [2023-11-22 22:21:58,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:21:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:21:58,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:21:58,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363567203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:21:58,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:21:58,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2023-11-22 22:21:58,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019832253] [2023-11-22 22:21:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:21:58,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 22:21:58,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:21:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 22:21:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-22 22:21:58,466 INFO L87 Difference]: Start difference. First operand 5128 states and 8185 transitions. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:21:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:21:59,450 INFO L93 Difference]: Finished difference Result 17347 states and 27843 transitions. [2023-11-22 22:21:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 22:21:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2023-11-22 22:21:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:21:59,467 INFO L225 Difference]: With dead ends: 17347 [2023-11-22 22:21:59,468 INFO L226 Difference]: Without dead ends: 12930 [2023-11-22 22:21:59,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2023-11-22 22:21:59,476 INFO L413 NwaCegarLoop]: 1281 mSDtfsCounter, 5678 mSDsluCounter, 5672 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5678 SdHoareTripleChecker+Valid, 6953 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 22:21:59,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5678 Valid, 6953 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 22:21:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12930 states. [2023-11-22 22:21:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12930 to 6268. [2023-11-22 22:21:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6268 states, 6267 states have (on average 1.5750757938407531) internal successors, (9871), 6267 states have internal predecessors, (9871), 0 states have call successors, (0), 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 22:21:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6268 states to 6268 states and 9871 transitions. [2023-11-22 22:21:59,561 INFO L78 Accepts]: Start accepts. Automaton has 6268 states and 9871 transitions. Word has length 409 [2023-11-22 22:21:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:21:59,561 INFO L495 AbstractCegarLoop]: Abstraction has 6268 states and 9871 transitions. [2023-11-22 22:21:59,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:21:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 6268 states and 9871 transitions. [2023-11-22 22:21:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-22 22:21:59,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:21:59,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:59,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 22:21:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-22 22:21:59,787 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:21:59,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:21:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -348248357, now seen corresponding path program 1 times [2023-11-22 22:21:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:21:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043276216] [2023-11-22 22:21:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:21:59,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:21:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:00,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:00,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043276216] [2023-11-22 22:22:00,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043276216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:00,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716990398] [2023-11-22 22:22:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:00,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:00,316 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:00,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 22:22:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:00,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-22 22:22:00,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:01,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:01,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716990398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:01,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:01,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-22 22:22:01,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900975966] [2023-11-22 22:22:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:01,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:22:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:22:01,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:22:01,169 INFO L87 Difference]: Start difference. First operand 6268 states and 9871 transitions. Second operand has 8 states, 8 states have (on average 51.125) internal successors, (409), 8 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:22:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:02,366 INFO L93 Difference]: Finished difference Result 20686 states and 33107 transitions. [2023-11-22 22:22:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 22:22:02,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 51.125) internal successors, (409), 8 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2023-11-22 22:22:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:02,395 INFO L225 Difference]: With dead ends: 20686 [2023-11-22 22:22:02,396 INFO L226 Difference]: Without dead ends: 15528 [2023-11-22 22:22:02,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-22 22:22:02,405 INFO L413 NwaCegarLoop]: 2068 mSDtfsCounter, 2246 mSDsluCounter, 8274 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 10342 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:02,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 10342 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 22:22:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15528 states. [2023-11-22 22:22:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15528 to 7876. [2023-11-22 22:22:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7875 states have (on average 1.5780317460317461) internal successors, (12427), 7875 states have internal predecessors, (12427), 0 states have call successors, (0), 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 22:22:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 12427 transitions. [2023-11-22 22:22:02,501 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 12427 transitions. Word has length 409 [2023-11-22 22:22:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:02,502 INFO L495 AbstractCegarLoop]: Abstraction has 7876 states and 12427 transitions. [2023-11-22 22:22:02,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 51.125) internal successors, (409), 8 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:22:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 12427 transitions. [2023-11-22 22:22:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-22 22:22:02,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:02,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:02,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 22:22:02,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:02,728 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:02,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1957078887, now seen corresponding path program 1 times [2023-11-22 22:22:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:02,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286745734] [2023-11-22 22:22:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:03,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286745734] [2023-11-22 22:22:03,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286745734] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728390776] [2023-11-22 22:22:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:03,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:03,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:03,272 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:03,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 22:22:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:03,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:22:03,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:03,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:03,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728390776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:03,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:03,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:22:03,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848920728] [2023-11-22 22:22:03,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:03,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:22:03,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:03,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:22:03,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:22:03,974 INFO L87 Difference]: Start difference. First operand 7876 states and 12427 transitions. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:22:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:04,478 INFO L93 Difference]: Finished difference Result 21992 states and 34889 transitions. [2023-11-22 22:22:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:22:04,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2023-11-22 22:22:04,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:04,495 INFO L225 Difference]: With dead ends: 21992 [2023-11-22 22:22:04,495 INFO L226 Difference]: Without dead ends: 15474 [2023-11-22 22:22:04,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:22:04,505 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1515 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:04,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 2668 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:22:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15474 states. [2023-11-22 22:22:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15474 to 13460. [2023-11-22 22:22:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13460 states, 13459 states have (on average 1.5631919161899102) internal successors, (21039), 13459 states have internal predecessors, (21039), 0 states have call successors, (0), 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 22:22:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13460 states to 13460 states and 21039 transitions. [2023-11-22 22:22:04,660 INFO L78 Accepts]: Start accepts. Automaton has 13460 states and 21039 transitions. Word has length 409 [2023-11-22 22:22:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:04,660 INFO L495 AbstractCegarLoop]: Abstraction has 13460 states and 21039 transitions. [2023-11-22 22:22:04,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 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 22:22:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13460 states and 21039 transitions. [2023-11-22 22:22:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-11-22 22:22:04,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:04,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:04,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-22 22:22:04,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-22 22:22:04,897 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:04,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:04,897 INFO L85 PathProgramCache]: Analyzing trace with hash 599152426, now seen corresponding path program 1 times [2023-11-22 22:22:04,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:04,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52844836] [2023-11-22 22:22:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52844836] [2023-11-22 22:22:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52844836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139255396] [2023-11-22 22:22:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:05,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:05,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:05,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 22:22:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:05,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:22:05,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:06,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139255396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:06,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:06,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:22:06,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759230004] [2023-11-22 22:22:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:06,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:22:06,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:22:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:22:06,200 INFO L87 Difference]: Start difference. First operand 13460 states and 21039 transitions. Second operand has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 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 22:22:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:06,701 INFO L93 Difference]: Finished difference Result 26430 states and 41908 transitions. [2023-11-22 22:22:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:22:06,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 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 410 [2023-11-22 22:22:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:06,718 INFO L225 Difference]: With dead ends: 26430 [2023-11-22 22:22:06,718 INFO L226 Difference]: Without dead ends: 15448 [2023-11-22 22:22:06,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:22:06,730 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1260 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:06,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 3157 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:22:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15448 states. [2023-11-22 22:22:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15448 to 15169. [2023-11-22 22:22:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15169 states, 15168 states have (on average 1.5725210970464134) internal successors, (23852), 15168 states have internal predecessors, (23852), 0 states have call successors, (0), 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 22:22:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15169 states to 15169 states and 23852 transitions. [2023-11-22 22:22:06,880 INFO L78 Accepts]: Start accepts. Automaton has 15169 states and 23852 transitions. Word has length 410 [2023-11-22 22:22:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:06,881 INFO L495 AbstractCegarLoop]: Abstraction has 15169 states and 23852 transitions. [2023-11-22 22:22:06,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 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 22:22:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 15169 states and 23852 transitions. [2023-11-22 22:22:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-11-22 22:22:06,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:06,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:06,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 22:22:07,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-22 22:22:07,115 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:07,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1462647907, now seen corresponding path program 1 times [2023-11-22 22:22:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:07,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833106237] [2023-11-22 22:22:07,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:07,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:07,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:07,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833106237] [2023-11-22 22:22:07,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833106237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:07,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726088787] [2023-11-22 22:22:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:07,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:07,586 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:07,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 22:22:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:07,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:22:07,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:08,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:08,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726088787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:08,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:08,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:22:08,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413684419] [2023-11-22 22:22:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:08,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:22:08,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:08,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:22:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:22:08,278 INFO L87 Difference]: Start difference. First operand 15169 states and 23852 transitions. Second operand has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 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 22:22:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:08,801 INFO L93 Difference]: Finished difference Result 42811 states and 67744 transitions. [2023-11-22 22:22:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:22:08,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 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 410 [2023-11-22 22:22:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:08,835 INFO L225 Difference]: With dead ends: 42811 [2023-11-22 22:22:08,836 INFO L226 Difference]: Without dead ends: 30120 [2023-11-22 22:22:08,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:22:08,854 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1522 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:08,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 2665 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:22:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30120 states. [2023-11-22 22:22:09,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30120 to 25881. [2023-11-22 22:22:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25881 states, 25880 states have (on average 1.557805255023184) internal successors, (40316), 25880 states have internal predecessors, (40316), 0 states have call successors, (0), 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 22:22:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25881 states to 25881 states and 40316 transitions. [2023-11-22 22:22:09,187 INFO L78 Accepts]: Start accepts. Automaton has 25881 states and 40316 transitions. Word has length 410 [2023-11-22 22:22:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:09,187 INFO L495 AbstractCegarLoop]: Abstraction has 25881 states and 40316 transitions. [2023-11-22 22:22:09,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 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 22:22:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 25881 states and 40316 transitions. [2023-11-22 22:22:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-11-22 22:22:09,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:09,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:09,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 22:22:09,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-22 22:22:09,437 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:09,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1344078862, now seen corresponding path program 1 times [2023-11-22 22:22:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694180608] [2023-11-22 22:22:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:09,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694180608] [2023-11-22 22:22:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694180608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861903770] [2023-11-22 22:22:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:09,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:09,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:09,909 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:09,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 22:22:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:10,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:22:10,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:10,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:10,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861903770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:10,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:10,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:22:10,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712732260] [2023-11-22 22:22:10,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:10,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:22:10,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:10,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:22:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:22:10,656 INFO L87 Difference]: Start difference. First operand 25881 states and 40316 transitions. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 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 22:22:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:11,369 INFO L93 Difference]: Finished difference Result 51173 states and 80923 transitions. [2023-11-22 22:22:11,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:22:11,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 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 411 [2023-11-22 22:22:11,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:11,394 INFO L225 Difference]: With dead ends: 51173 [2023-11-22 22:22:11,395 INFO L226 Difference]: Without dead ends: 30070 [2023-11-22 22:22:11,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:22:11,404 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1289 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:11,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 3133 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:22:11,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30070 states. [2023-11-22 22:22:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30070 to 29860. [2023-11-22 22:22:11,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29860 states, 29859 states have (on average 1.5688737064201748) internal successors, (46845), 29859 states have internal predecessors, (46845), 0 states have call successors, (0), 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 22:22:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29860 states to 29860 states and 46845 transitions. [2023-11-22 22:22:11,715 INFO L78 Accepts]: Start accepts. Automaton has 29860 states and 46845 transitions. Word has length 411 [2023-11-22 22:22:11,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:11,715 INFO L495 AbstractCegarLoop]: Abstraction has 29860 states and 46845 transitions. [2023-11-22 22:22:11,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 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 22:22:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 29860 states and 46845 transitions. [2023-11-22 22:22:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-11-22 22:22:11,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:11,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:11,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 22:22:11,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:11,966 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:11,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1395294925, now seen corresponding path program 1 times [2023-11-22 22:22:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:11,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682227839] [2023-11-22 22:22:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:11,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:12,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:12,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682227839] [2023-11-22 22:22:12,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682227839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:12,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021334006] [2023-11-22 22:22:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:12,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:12,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:12,451 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:12,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 22:22:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:12,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 22:22:12,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:13,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:13,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021334006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:13,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:13,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-22 22:22:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651618431] [2023-11-22 22:22:13,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:13,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:22:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:22:13,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:22:13,103 INFO L87 Difference]: Start difference. First operand 29860 states and 46845 transitions. Second operand has 8 states, 8 states have (on average 51.375) internal successors, (411), 8 states have internal predecessors, (411), 0 states have call successors, (0), 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 22:22:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:14,207 INFO L93 Difference]: Finished difference Result 105138 states and 167692 transitions. [2023-11-22 22:22:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 22:22:14,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 51.375) internal successors, (411), 8 states have internal predecessors, (411), 0 states have call successors, (0), 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 411 [2023-11-22 22:22:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:14,290 INFO L225 Difference]: With dead ends: 105138 [2023-11-22 22:22:14,291 INFO L226 Difference]: Without dead ends: 80056 [2023-11-22 22:22:14,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-22 22:22:14,327 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 2238 mSDsluCounter, 6868 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 8583 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:14,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2238 Valid, 8583 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 22:22:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80056 states. [2023-11-22 22:22:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80056 to 29892. [2023-11-22 22:22:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29892 states, 29891 states have (on average 1.5686661536917468) internal successors, (46889), 29891 states have internal predecessors, (46889), 0 states have call successors, (0), 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 22:22:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29892 states to 29892 states and 46889 transitions. [2023-11-22 22:22:14,905 INFO L78 Accepts]: Start accepts. Automaton has 29892 states and 46889 transitions. Word has length 411 [2023-11-22 22:22:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:14,905 INFO L495 AbstractCegarLoop]: Abstraction has 29892 states and 46889 transitions. [2023-11-22 22:22:14,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 51.375) internal successors, (411), 8 states have internal predecessors, (411), 0 states have call successors, (0), 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 22:22:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 29892 states and 46889 transitions. [2023-11-22 22:22:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-22 22:22:14,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:14,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:14,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-22 22:22:15,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:15,161 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:15,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash 394144012, now seen corresponding path program 1 times [2023-11-22 22:22:15,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:15,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639406112] [2023-11-22 22:22:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:15,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:15,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:15,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639406112] [2023-11-22 22:22:15,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639406112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:15,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:22:15,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:22:15,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224498631] [2023-11-22 22:22:15,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:15,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:22:15,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:22:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:22:15,534 INFO L87 Difference]: Start difference. First operand 29892 states and 46889 transitions. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:15,710 INFO L93 Difference]: Finished difference Result 80264 states and 127735 transitions. [2023-11-22 22:22:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:22:15,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2023-11-22 22:22:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:15,775 INFO L225 Difference]: With dead ends: 80264 [2023-11-22 22:22:15,776 INFO L226 Difference]: Without dead ends: 55150 [2023-11-22 22:22:15,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:22:15,807 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 1598 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 4532 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:15,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 4532 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:22:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55150 states. [2023-11-22 22:22:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55150 to 29976. [2023-11-22 22:22:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29976 states, 29975 states have (on average 1.5684070058381985) internal successors, (47013), 29975 states have internal predecessors, (47013), 0 states have call successors, (0), 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 22:22:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29976 states to 29976 states and 47013 transitions. [2023-11-22 22:22:16,180 INFO L78 Accepts]: Start accepts. Automaton has 29976 states and 47013 transitions. Word has length 412 [2023-11-22 22:22:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:16,181 INFO L495 AbstractCegarLoop]: Abstraction has 29976 states and 47013 transitions. [2023-11-22 22:22:16,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 29976 states and 47013 transitions. [2023-11-22 22:22:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-22 22:22:16,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:16,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:16,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-22 22:22:16,413 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:16,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1281234008, now seen corresponding path program 1 times [2023-11-22 22:22:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:16,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696861291] [2023-11-22 22:22:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:16,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:16,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696861291] [2023-11-22 22:22:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696861291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081529039] [2023-11-22 22:22:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:16,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:16,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:16,887 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:16,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 22:22:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:17,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 1759 conjuncts, 107 conjunts are in the unsatisfiable core [2023-11-22 22:22:17,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:17,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081529039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:17,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:17,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2023-11-22 22:22:17,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655274349] [2023-11-22 22:22:17,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:17,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:22:17,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:17,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:22:17,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:22:17,748 INFO L87 Difference]: Start difference. First operand 29976 states and 47013 transitions. Second operand has 8 states, 8 states have (on average 51.5) internal successors, (412), 7 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:18,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:18,898 INFO L93 Difference]: Finished difference Result 87298 states and 138576 transitions. [2023-11-22 22:22:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:22:18,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 51.5) internal successors, (412), 7 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2023-11-22 22:22:18,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:18,960 INFO L225 Difference]: With dead ends: 87298 [2023-11-22 22:22:18,961 INFO L226 Difference]: Without dead ends: 62100 [2023-11-22 22:22:18,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:22:18,977 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 2266 mSDsluCounter, 5349 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 7091 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:18,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2266 Valid, 7091 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 22:22:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62100 states. [2023-11-22 22:22:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62100 to 35272. [2023-11-22 22:22:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35272 states, 35271 states have (on average 1.5630121062629356) internal successors, (55129), 35271 states have internal predecessors, (55129), 0 states have call successors, (0), 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 22:22:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35272 states to 35272 states and 55129 transitions. [2023-11-22 22:22:19,387 INFO L78 Accepts]: Start accepts. Automaton has 35272 states and 55129 transitions. Word has length 412 [2023-11-22 22:22:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:19,387 INFO L495 AbstractCegarLoop]: Abstraction has 35272 states and 55129 transitions. [2023-11-22 22:22:19,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 51.5) internal successors, (412), 7 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 35272 states and 55129 transitions. [2023-11-22 22:22:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-22 22:22:19,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:19,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:19,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 22:22:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-22 22:22:19,637 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:19,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1318087514, now seen corresponding path program 1 times [2023-11-22 22:22:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:19,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169301487] [2023-11-22 22:22:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:20,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:20,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169301487] [2023-11-22 22:22:20,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169301487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:20,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821845674] [2023-11-22 22:22:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:20,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:20,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:20,085 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:20,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 22:22:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:20,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-22 22:22:20,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:21,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:21,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821845674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:21,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 20 [2023-11-22 22:22:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793427582] [2023-11-22 22:22:21,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:21,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 22:22:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 22:22:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:22:21,449 INFO L87 Difference]: Start difference. First operand 35272 states and 55129 transitions. Second operand has 15 states, 15 states have (on average 27.466666666666665) internal successors, (412), 15 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:24,099 INFO L93 Difference]: Finished difference Result 89140 states and 141231 transitions. [2023-11-22 22:22:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 22:22:24,100 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 27.466666666666665) internal successors, (412), 15 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2023-11-22 22:22:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:24,168 INFO L225 Difference]: With dead ends: 89140 [2023-11-22 22:22:24,169 INFO L226 Difference]: Without dead ends: 59826 [2023-11-22 22:22:24,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-11-22 22:22:24,202 INFO L413 NwaCegarLoop]: 1760 mSDtfsCounter, 4535 mSDsluCounter, 14480 mSDsCounter, 0 mSdLazyCounter, 4708 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 16240 SdHoareTripleChecker+Invalid, 4714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:24,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4535 Valid, 16240 Invalid, 4714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4708 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 22:22:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59826 states. [2023-11-22 22:22:24,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59826 to 43876. [2023-11-22 22:22:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43876 states, 43875 states have (on average 1.559908831908832) internal successors, (68441), 43875 states have internal predecessors, (68441), 0 states have call successors, (0), 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 22:22:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43876 states to 43876 states and 68441 transitions. [2023-11-22 22:22:24,798 INFO L78 Accepts]: Start accepts. Automaton has 43876 states and 68441 transitions. Word has length 412 [2023-11-22 22:22:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:24,799 INFO L495 AbstractCegarLoop]: Abstraction has 43876 states and 68441 transitions. [2023-11-22 22:22:24,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.466666666666665) internal successors, (412), 15 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 43876 states and 68441 transitions. [2023-11-22 22:22:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-22 22:22:24,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:24,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:24,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 22:22:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-22 22:22:25,061 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:25,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash -327596522, now seen corresponding path program 1 times [2023-11-22 22:22:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355993413] [2023-11-22 22:22:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:25,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:25,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355993413] [2023-11-22 22:22:25,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355993413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:25,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055667756] [2023-11-22 22:22:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:25,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:25,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:25,549 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:25,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 22:22:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:25,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-22 22:22:25,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:27,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:27,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055667756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:27,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:27,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [7] total 28 [2023-11-22 22:22:27,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735858692] [2023-11-22 22:22:27,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:27,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-22 22:22:27,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:27,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-22 22:22:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2023-11-22 22:22:27,326 INFO L87 Difference]: Start difference. First operand 43876 states and 68441 transitions. Second operand has 25 states, 25 states have (on average 16.48) internal successors, (412), 25 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:32,950 INFO L93 Difference]: Finished difference Result 168733 states and 268462 transitions. [2023-11-22 22:22:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-22 22:22:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 16.48) internal successors, (412), 25 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2023-11-22 22:22:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:33,307 INFO L225 Difference]: With dead ends: 168733 [2023-11-22 22:22:33,308 INFO L226 Difference]: Without dead ends: 132383 [2023-11-22 22:22:33,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1310, Invalid=6880, Unknown=0, NotChecked=0, Total=8190 [2023-11-22 22:22:33,330 INFO L413 NwaCegarLoop]: 1820 mSDtfsCounter, 22211 mSDsluCounter, 22690 mSDsCounter, 0 mSdLazyCounter, 7775 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22211 SdHoareTripleChecker+Valid, 24510 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:33,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22211 Valid, 24510 Invalid, 7814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 7775 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-22 22:22:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132383 states. [2023-11-22 22:22:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132383 to 56397. [2023-11-22 22:22:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56397 states, 56396 states have (on average 1.5537981417121782) internal successors, (87628), 56396 states have internal predecessors, (87628), 0 states have call successors, (0), 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 22:22:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56397 states to 56397 states and 87628 transitions. [2023-11-22 22:22:34,211 INFO L78 Accepts]: Start accepts. Automaton has 56397 states and 87628 transitions. Word has length 412 [2023-11-22 22:22:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:34,211 INFO L495 AbstractCegarLoop]: Abstraction has 56397 states and 87628 transitions. [2023-11-22 22:22:34,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 16.48) internal successors, (412), 25 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 56397 states and 87628 transitions. [2023-11-22 22:22:34,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-22 22:22:34,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:34,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:34,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-22 22:22:34,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-22 22:22:34,496 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:34,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:34,497 INFO L85 PathProgramCache]: Analyzing trace with hash -290743016, now seen corresponding path program 1 times [2023-11-22 22:22:34,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:34,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058621190] [2023-11-22 22:22:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:34,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:35,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:35,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058621190] [2023-11-22 22:22:35,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058621190] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:35,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097767886] [2023-11-22 22:22:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:35,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:35,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:35,489 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:35,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 22:22:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:35,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-22 22:22:35,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:36,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:36,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097767886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:36,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:36,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-22 22:22:36,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221807281] [2023-11-22 22:22:36,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:36,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:22:36,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:36,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:22:36,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:22:36,066 INFO L87 Difference]: Start difference. First operand 56397 states and 87628 transitions. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:36,455 INFO L93 Difference]: Finished difference Result 102642 states and 161318 transitions. [2023-11-22 22:22:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:22:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2023-11-22 22:22:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:36,523 INFO L225 Difference]: With dead ends: 102642 [2023-11-22 22:22:36,523 INFO L226 Difference]: Without dead ends: 56397 [2023-11-22 22:22:36,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:22:36,570 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 743 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:36,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1304 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:22:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56397 states. [2023-11-22 22:22:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56397 to 56397. [2023-11-22 22:22:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56397 states, 56396 states have (on average 1.5507482800198595) internal successors, (87456), 56396 states have internal predecessors, (87456), 0 states have call successors, (0), 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 22:22:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56397 states to 56397 states and 87456 transitions. [2023-11-22 22:22:37,405 INFO L78 Accepts]: Start accepts. Automaton has 56397 states and 87456 transitions. Word has length 412 [2023-11-22 22:22:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:37,405 INFO L495 AbstractCegarLoop]: Abstraction has 56397 states and 87456 transitions. [2023-11-22 22:22:37,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 56397 states and 87456 transitions. [2023-11-22 22:22:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-22 22:22:37,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:37,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:37,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 22:22:37,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-22 22:22:37,674 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:37,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1095573718, now seen corresponding path program 1 times [2023-11-22 22:22:37,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:37,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362566428] [2023-11-22 22:22:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:38,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:38,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362566428] [2023-11-22 22:22:38,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362566428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:38,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206717419] [2023-11-22 22:22:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:38,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:38,280 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:38,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 22:22:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:38,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-22 22:22:38,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:39,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:22:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206717419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:22:39,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:22:39,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 20 [2023-11-22 22:22:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552886220] [2023-11-22 22:22:39,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:22:39,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 22:22:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 22:22:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:22:39,393 INFO L87 Difference]: Start difference. First operand 56397 states and 87456 transitions. Second operand has 15 states, 15 states have (on average 27.466666666666665) internal successors, (412), 14 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:22:42,191 INFO L93 Difference]: Finished difference Result 106262 states and 166832 transitions. [2023-11-22 22:22:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-22 22:22:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 27.466666666666665) internal successors, (412), 14 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2023-11-22 22:22:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:22:42,254 INFO L225 Difference]: With dead ends: 106262 [2023-11-22 22:22:42,254 INFO L226 Difference]: Without dead ends: 59999 [2023-11-22 22:22:42,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2023-11-22 22:22:42,285 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 4903 mSDsluCounter, 13429 mSDsCounter, 0 mSdLazyCounter, 4538 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 14712 SdHoareTripleChecker+Invalid, 4547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:22:42,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 14712 Invalid, 4547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 4538 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 22:22:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59999 states. [2023-11-22 22:22:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59999 to 55447. [2023-11-22 22:22:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55447 states, 55446 states have (on average 1.549219059986293) internal successors, (85898), 55446 states have internal predecessors, (85898), 0 states have call successors, (0), 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 22:22:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55447 states to 55447 states and 85898 transitions. [2023-11-22 22:22:43,061 INFO L78 Accepts]: Start accepts. Automaton has 55447 states and 85898 transitions. Word has length 412 [2023-11-22 22:22:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:22:43,061 INFO L495 AbstractCegarLoop]: Abstraction has 55447 states and 85898 transitions. [2023-11-22 22:22:43,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.466666666666665) internal successors, (412), 14 states have internal predecessors, (412), 0 states have call successors, (0), 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 22:22:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 55447 states and 85898 transitions. [2023-11-22 22:22:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-11-22 22:22:43,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:22:43,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:43,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 22:22:43,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-22 22:22:43,340 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:22:43,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:22:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1592491968, now seen corresponding path program 1 times [2023-11-22 22:22:43,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:22:43,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660920092] [2023-11-22 22:22:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:22:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:22:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660920092] [2023-11-22 22:22:43,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660920092] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:22:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9280113] [2023-11-22 22:22:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:22:43,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:22:43,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:22:43,978 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:22:43,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 22:22:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:22:44,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1763 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:22:44,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:22:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:45,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:22:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:22:46,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9280113] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:22:46,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:22:46,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2023-11-22 22:22:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330422170] [2023-11-22 22:22:46,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:22:46,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-22 22:22:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:22:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-22 22:22:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-11-22 22:22:46,157 INFO L87 Difference]: Start difference. First operand 55447 states and 85898 transitions. Second operand has 19 states, 19 states have (on average 57.73684210526316) internal successors, (1097), 19 states have internal predecessors, (1097), 0 states have call successors, (0), 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 22:23:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:23:02,791 INFO L93 Difference]: Finished difference Result 1782957 states and 2822982 transitions. [2023-11-22 22:23:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-11-22 22:23:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 57.73684210526316) internal successors, (1097), 19 states have internal predecessors, (1097), 0 states have call successors, (0), 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 413 [2023-11-22 22:23:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:23:05,041 INFO L225 Difference]: With dead ends: 1782957 [2023-11-22 22:23:05,042 INFO L226 Difference]: Without dead ends: 1737662 [2023-11-22 22:23:05,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40647 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=8138, Invalid=83974, Unknown=0, NotChecked=0, Total=92112 [2023-11-22 22:23:05,586 INFO L413 NwaCegarLoop]: 2509 mSDtfsCounter, 60169 mSDsluCounter, 37419 mSDsCounter, 0 mSdLazyCounter, 10586 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60169 SdHoareTripleChecker+Valid, 39928 SdHoareTripleChecker+Invalid, 10720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 10586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:23:05,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60169 Valid, 39928 Invalid, 10720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 10586 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-22 22:23:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737662 states. [2023-11-22 22:23:15,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737662 to 247585. [2023-11-22 22:23:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247585 states, 247584 states have (on average 1.5667167506785575) internal successors, (387894), 247584 states have internal predecessors, (387894), 0 states have call successors, (0), 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 22:23:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247585 states to 247585 states and 387894 transitions. [2023-11-22 22:23:16,101 INFO L78 Accepts]: Start accepts. Automaton has 247585 states and 387894 transitions. Word has length 413 [2023-11-22 22:23:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:23:16,102 INFO L495 AbstractCegarLoop]: Abstraction has 247585 states and 387894 transitions. [2023-11-22 22:23:16,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 57.73684210526316) internal successors, (1097), 19 states have internal predecessors, (1097), 0 states have call successors, (0), 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 22:23:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 247585 states and 387894 transitions. [2023-11-22 22:23:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-22 22:23:16,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:23:16,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:16,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 22:23:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:23:16,580 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:23:16,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:23:16,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1412998860, now seen corresponding path program 1 times [2023-11-22 22:23:16,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:23:16,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706371792] [2023-11-22 22:23:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:23:16,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:23:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:23:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 35 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:23:17,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:23:17,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706371792] [2023-11-22 22:23:17,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706371792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:23:17,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917645566] [2023-11-22 22:23:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:23:17,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:23:17,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:23:17,699 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:23:17,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 22:23:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:23:18,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 145 conjunts are in the unsatisfiable core [2023-11-22 22:23:18,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:23:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 31 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:23:20,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:23:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 19 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:23:23,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917645566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:23:23,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:23:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 35, 36] total 76 [2023-11-22 22:23:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194400432] [2023-11-22 22:23:23,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:23:23,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-11-22 22:23:23,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:23:23,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-11-22 22:23:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=5034, Unknown=0, NotChecked=0, Total=5700 [2023-11-22 22:23:23,196 INFO L87 Difference]: Start difference. First operand 247585 states and 387894 transitions. Second operand has 76 states, 76 states have (on average 15.473684210526315) internal successors, (1176), 76 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)