./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81fc918e1fab83089d488e981f8e2fc461bd57864199cdfbd6916c01a7d86fab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:59:08,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:59:08,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:59:08,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:59:08,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:59:08,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:59:08,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:59:08,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:59:08,715 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:59:08,716 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:59:08,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:59:08,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:59:08,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:59:08,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:59:08,719 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:59:08,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:59:08,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:59:08,722 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:59:08,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:59:08,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:59:08,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:59:08,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:59:08,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:59:08,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:59:08,723 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:59:08,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:59:08,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:59:08,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:59:08,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:59:08,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:59:08,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:59:08,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:59:08,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:59:08,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:59:08,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:59:08,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:59:08,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:59:08,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:59:08,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:59:08,727 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:59:08,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:59:08,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:59:08,728 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81fc918e1fab83089d488e981f8e2fc461bd57864199cdfbd6916c01a7d86fab [2023-11-22 18:59:08,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:59:08,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:59:08,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:59:08,945 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:59:08,945 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:59:08,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-22 18:59:10,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:59:10,252 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:59:10,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-22 18:59:10,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4243790f3/00e449a76903420ba91c67d1a397d6b3/FLAG61c97739e [2023-11-22 18:59:10,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4243790f3/00e449a76903420ba91c67d1a397d6b3 [2023-11-22 18:59:10,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:59:10,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:59:10,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:59:10,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:59:10,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:59:10,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8e9feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10, skipping insertion in model container [2023-11-22 18:59:10,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:59:10,551 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7067,7080] [2023-11-22 18:59:10,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:59:10,600 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:59:10,634 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7067,7080] [2023-11-22 18:59:10,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:59:10,661 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:59:10,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10 WrapperNode [2023-11-22 18:59:10,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:59:10,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:59:10,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:59:10,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:59:10,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,724 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 606 [2023-11-22 18:59:10,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:59:10,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:59:10,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:59:10,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:59:10,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,751 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,769 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-22 18:59:10,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:59:10,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:59:10,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:59:10,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:59:10,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (1/1) ... [2023-11-22 18:59:10,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:59:10,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:59:10,849 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 18:59:10,880 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 18:59:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:59:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:59:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:59:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:59:11,025 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:59:11,027 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:59:11,398 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:59:11,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:59:11,429 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-22 18:59:11,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:59:11 BoogieIcfgContainer [2023-11-22 18:59:11,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:59:11,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:59:11,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:59:11,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:59:11,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:59:10" (1/3) ... [2023-11-22 18:59:11,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190a207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:59:11, skipping insertion in model container [2023-11-22 18:59:11,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:59:10" (2/3) ... [2023-11-22 18:59:11,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190a207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:59:11, skipping insertion in model container [2023-11-22 18:59:11,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:59:11" (3/3) ... [2023-11-22 18:59:11,436 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-22 18:59:11,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:59:11,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:59:11,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:59:11,496 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;@41ed99f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:59:11,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:59:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 125 states have (on average 1.776) internal successors, (222), 132 states have internal predecessors, (222), 0 states have call successors, (0), 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 18:59:11,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-22 18:59:11,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:11,508 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] [2023-11-22 18:59:11,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:11,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:11,513 INFO L85 PathProgramCache]: Analyzing trace with hash -400239074, now seen corresponding path program 1 times [2023-11-22 18:59:11,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:11,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820052452] [2023-11-22 18:59:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:11,837 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 18:59:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:11,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820052452] [2023-11-22 18:59:11,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820052452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:11,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:11,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:11,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906346082] [2023-11-22 18:59:11,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:11,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:11,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:11,876 INFO L87 Difference]: Start difference. First operand has 133 states, 125 states have (on average 1.776) internal successors, (222), 132 states have internal predecessors, (222), 0 states have call successors, (0), 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 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 18:59:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:11,929 INFO L93 Difference]: Finished difference Result 294 states and 475 transitions. [2023-11-22 18:59:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:11,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-22 18:59:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:11,938 INFO L225 Difference]: With dead ends: 294 [2023-11-22 18:59:11,939 INFO L226 Difference]: Without dead ends: 193 [2023-11-22 18:59:11,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:11,943 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 124 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:11,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 392 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:11,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-22 18:59:12,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2023-11-22 18:59:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.5473684210526315) internal successors, (294), 190 states have internal predecessors, (294), 0 states have call successors, (0), 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 18:59:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 294 transitions. [2023-11-22 18:59:12,032 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 294 transitions. Word has length 50 [2023-11-22 18:59:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:12,033 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 294 transitions. [2023-11-22 18:59:12,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 18:59:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 294 transitions. [2023-11-22 18:59:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-22 18:59:12,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:12,035 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] [2023-11-22 18:59:12,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:59:12,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:12,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1922344565, now seen corresponding path program 1 times [2023-11-22 18:59:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:12,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939520635] [2023-11-22 18:59:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:12,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:12,132 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 18:59:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939520635] [2023-11-22 18:59:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939520635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:12,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:12,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347052029] [2023-11-22 18:59:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:12,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:12,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:12,136 INFO L87 Difference]: Start difference. First operand 191 states and 294 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:12,162 INFO L93 Difference]: Finished difference Result 465 states and 726 transitions. [2023-11-22 18:59:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:12,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-22 18:59:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:12,164 INFO L225 Difference]: With dead ends: 465 [2023-11-22 18:59:12,164 INFO L226 Difference]: Without dead ends: 321 [2023-11-22 18:59:12,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:12,166 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 102 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:12,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 410 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:12,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-22 18:59:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2023-11-22 18:59:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.5534591194968554) internal successors, (494), 318 states have internal predecessors, (494), 0 states have call successors, (0), 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 18:59:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 494 transitions. [2023-11-22 18:59:12,185 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 494 transitions. Word has length 52 [2023-11-22 18:59:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:12,186 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 494 transitions. [2023-11-22 18:59:12,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:12,186 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 494 transitions. [2023-11-22 18:59:12,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-22 18:59:12,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:12,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:59:12,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 18:59:12,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:12,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:12,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1204346897, now seen corresponding path program 1 times [2023-11-22 18:59:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78934007] [2023-11-22 18:59:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:12,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:12,262 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 18:59:12,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78934007] [2023-11-22 18:59:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78934007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:12,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918468731] [2023-11-22 18:59:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:12,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:12,266 INFO L87 Difference]: Start difference. First operand 319 states and 494 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:12,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:12,296 INFO L93 Difference]: Finished difference Result 592 states and 926 transitions. [2023-11-22 18:59:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:12,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-22 18:59:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:12,299 INFO L225 Difference]: With dead ends: 592 [2023-11-22 18:59:12,299 INFO L226 Difference]: Without dead ends: 448 [2023-11-22 18:59:12,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:12,301 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 103 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:12,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 406 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-22 18:59:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2023-11-22 18:59:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.5550561797752809) internal successors, (692), 445 states have internal predecessors, (692), 0 states have call successors, (0), 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 18:59:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 692 transitions. [2023-11-22 18:59:12,323 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 692 transitions. Word has length 54 [2023-11-22 18:59:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:12,323 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 692 transitions. [2023-11-22 18:59:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 692 transitions. [2023-11-22 18:59:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-22 18:59:12,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:12,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:59:12,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 18:59:12,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:12,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash 40823230, now seen corresponding path program 1 times [2023-11-22 18:59:12,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:12,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362558905] [2023-11-22 18:59:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:12,469 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 18:59:12,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362558905] [2023-11-22 18:59:12,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362558905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:12,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:12,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:12,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877011176] [2023-11-22 18:59:12,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:12,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:12,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:12,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:12,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:12,473 INFO L87 Difference]: Start difference. First operand 446 states and 692 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:12,494 INFO L93 Difference]: Finished difference Result 1156 states and 1796 transitions. [2023-11-22 18:59:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-22 18:59:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:12,498 INFO L225 Difference]: With dead ends: 1156 [2023-11-22 18:59:12,499 INFO L226 Difference]: Without dead ends: 780 [2023-11-22 18:59:12,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:12,509 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 97 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:12,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 356 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2023-11-22 18:59:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 778. [2023-11-22 18:59:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.5418275418275418) internal successors, (1198), 777 states have internal predecessors, (1198), 0 states have call successors, (0), 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 18:59:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1198 transitions. [2023-11-22 18:59:12,536 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1198 transitions. Word has length 54 [2023-11-22 18:59:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:12,536 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1198 transitions. [2023-11-22 18:59:12,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1198 transitions. [2023-11-22 18:59:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-22 18:59:12,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:12,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:59:12,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 18:59:12,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:12,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash 885846763, now seen corresponding path program 1 times [2023-11-22 18:59:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374736240] [2023-11-22 18:59:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:12,673 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 18:59:12,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:12,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374736240] [2023-11-22 18:59:12,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374736240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:12,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:12,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:59:12,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850634325] [2023-11-22 18:59:12,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:59:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:59:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:12,677 INFO L87 Difference]: Start difference. First operand 778 states and 1198 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:12,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:12,790 INFO L93 Difference]: Finished difference Result 3526 states and 5516 transitions. [2023-11-22 18:59:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:59:12,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-22 18:59:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:12,800 INFO L225 Difference]: With dead ends: 3526 [2023-11-22 18:59:12,801 INFO L226 Difference]: Without dead ends: 2802 [2023-11-22 18:59:12,803 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 18:59:12,807 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 827 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:12,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1197 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:59:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2023-11-22 18:59:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1381. [2023-11-22 18:59:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 1.5572463768115943) internal successors, (2149), 1380 states have internal predecessors, (2149), 0 states have call successors, (0), 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 18:59:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2149 transitions. [2023-11-22 18:59:12,877 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2149 transitions. Word has length 56 [2023-11-22 18:59:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:12,877 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 2149 transitions. [2023-11-22 18:59:12,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2149 transitions. [2023-11-22 18:59:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-22 18:59:12,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:12,878 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] [2023-11-22 18:59:12,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 18:59:12,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:12,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:12,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1628941659, now seen corresponding path program 1 times [2023-11-22 18:59:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:12,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750801455] [2023-11-22 18:59:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:12,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:12,961 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 18:59:12,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:12,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750801455] [2023-11-22 18:59:12,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750801455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:12,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:12,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:59:12,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613738028] [2023-11-22 18:59:12,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:12,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:59:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:12,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:59:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:59:12,963 INFO L87 Difference]: Start difference. First operand 1381 states and 2149 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 18:59:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:13,006 INFO L93 Difference]: Finished difference Result 4060 states and 6371 transitions. [2023-11-22 18:59:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:59:13,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-22 18:59:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:13,016 INFO L225 Difference]: With dead ends: 4060 [2023-11-22 18:59:13,018 INFO L226 Difference]: Without dead ends: 2751 [2023-11-22 18:59:13,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:13,021 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 355 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 576 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 18:59:13,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 576 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2023-11-22 18:59:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2049. [2023-11-22 18:59:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 1.556640625) internal successors, (3188), 2048 states have internal predecessors, (3188), 0 states have call successors, (0), 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 18:59:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 3188 transitions. [2023-11-22 18:59:13,059 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 3188 transitions. Word has length 57 [2023-11-22 18:59:13,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:13,064 INFO L495 AbstractCegarLoop]: Abstraction has 2049 states and 3188 transitions. [2023-11-22 18:59:13,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 18:59:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 3188 transitions. [2023-11-22 18:59:13,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-22 18:59:13,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:13,065 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] [2023-11-22 18:59:13,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 18:59:13,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:13,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:13,066 INFO L85 PathProgramCache]: Analyzing trace with hash -304349368, now seen corresponding path program 1 times [2023-11-22 18:59:13,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:13,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258421871] [2023-11-22 18:59:13,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:13,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:13,103 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 18:59:13,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:13,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258421871] [2023-11-22 18:59:13,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258421871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:13,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:13,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:13,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827268206] [2023-11-22 18:59:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:13,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:13,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:13,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:13,105 INFO L87 Difference]: Start difference. First operand 2049 states and 3188 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 18:59:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:13,136 INFO L93 Difference]: Finished difference Result 3965 states and 6186 transitions. [2023-11-22 18:59:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-22 18:59:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:13,145 INFO L225 Difference]: With dead ends: 3965 [2023-11-22 18:59:13,146 INFO L226 Difference]: Without dead ends: 2862 [2023-11-22 18:59:13,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:13,149 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 98 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:13,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 388 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:13,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-11-22 18:59:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2860. [2023-11-22 18:59:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2859 states have (on average 1.5445960125918152) internal successors, (4416), 2859 states have internal predecessors, (4416), 0 states have call successors, (0), 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 18:59:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4416 transitions. [2023-11-22 18:59:13,191 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4416 transitions. Word has length 57 [2023-11-22 18:59:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:13,192 INFO L495 AbstractCegarLoop]: Abstraction has 2860 states and 4416 transitions. [2023-11-22 18:59:13,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 18:59:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4416 transitions. [2023-11-22 18:59:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-22 18:59:13,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:13,193 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] [2023-11-22 18:59:13,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 18:59:13,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:13,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash -936195192, now seen corresponding path program 1 times [2023-11-22 18:59:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:13,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457067188] [2023-11-22 18:59:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:13,240 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 18:59:13,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:13,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457067188] [2023-11-22 18:59:13,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457067188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:13,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:13,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:13,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270990957] [2023-11-22 18:59:13,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:13,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:13,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:13,242 INFO L87 Difference]: Start difference. First operand 2860 states and 4416 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 18:59:13,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:13,265 INFO L93 Difference]: Finished difference Result 6142 states and 9498 transitions. [2023-11-22 18:59:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:13,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-22 18:59:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:13,275 INFO L225 Difference]: With dead ends: 6142 [2023-11-22 18:59:13,276 INFO L226 Difference]: Without dead ends: 4126 [2023-11-22 18:59:13,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:13,279 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 108 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:13,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 433 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2023-11-22 18:59:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 4124. [2023-11-22 18:59:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4124 states, 4123 states have (on average 1.5284986660198885) internal successors, (6302), 4123 states have internal predecessors, (6302), 0 states have call successors, (0), 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 18:59:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 6302 transitions. [2023-11-22 18:59:13,342 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 6302 transitions. Word has length 57 [2023-11-22 18:59:13,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:13,343 INFO L495 AbstractCegarLoop]: Abstraction has 4124 states and 6302 transitions. [2023-11-22 18:59:13,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 18:59:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 6302 transitions. [2023-11-22 18:59:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-22 18:59:13,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:13,344 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] [2023-11-22 18:59:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 18:59:13,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:13,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash 899490960, now seen corresponding path program 1 times [2023-11-22 18:59:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:13,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903740509] [2023-11-22 18:59:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:13,494 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 18:59:13,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:13,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903740509] [2023-11-22 18:59:13,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903740509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:13,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:13,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:59:13,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768060480] [2023-11-22 18:59:13,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:13,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:59:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:13,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:59:13,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:13,496 INFO L87 Difference]: Start difference. First operand 4124 states and 6302 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:13,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:13,544 INFO L93 Difference]: Finished difference Result 6922 states and 10491 transitions. [2023-11-22 18:59:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:59:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-22 18:59:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:13,562 INFO L225 Difference]: With dead ends: 6922 [2023-11-22 18:59:13,562 INFO L226 Difference]: Without dead ends: 6920 [2023-11-22 18:59:13,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:59:13,566 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 226 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:13,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 888 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6920 states. [2023-11-22 18:59:13,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6920 to 4228. [2023-11-22 18:59:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4228 states, 4227 states have (on average 1.5091081145020109) internal successors, (6379), 4227 states have internal predecessors, (6379), 0 states have call successors, (0), 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 18:59:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4228 states to 4228 states and 6379 transitions. [2023-11-22 18:59:13,667 INFO L78 Accepts]: Start accepts. Automaton has 4228 states and 6379 transitions. Word has length 65 [2023-11-22 18:59:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:13,667 INFO L495 AbstractCegarLoop]: Abstraction has 4228 states and 6379 transitions. [2023-11-22 18:59:13,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4228 states and 6379 transitions. [2023-11-22 18:59:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-22 18:59:13,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:13,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:59:13,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 18:59:13,672 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:13,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:13,672 INFO L85 PathProgramCache]: Analyzing trace with hash 7759582, now seen corresponding path program 1 times [2023-11-22 18:59:13,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:13,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188337964] [2023-11-22 18:59:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-22 18:59:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:13,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188337964] [2023-11-22 18:59:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188337964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:59:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148507737] [2023-11-22 18:59:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:59:13,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:59:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:13,771 INFO L87 Difference]: Start difference. First operand 4228 states and 6379 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:13,853 INFO L93 Difference]: Finished difference Result 12255 states and 18526 transitions. [2023-11-22 18:59:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:59:13,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-22 18:59:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:13,883 INFO L225 Difference]: With dead ends: 12255 [2023-11-22 18:59:13,884 INFO L226 Difference]: Without dead ends: 9437 [2023-11-22 18:59:13,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:59:13,890 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 446 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:13,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 886 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2023-11-22 18:59:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 6805. [2023-11-22 18:59:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6805 states, 6804 states have (on average 1.5061728395061729) internal successors, (10248), 6804 states have internal predecessors, (10248), 0 states have call successors, (0), 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 18:59:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6805 states to 6805 states and 10248 transitions. [2023-11-22 18:59:13,999 INFO L78 Accepts]: Start accepts. Automaton has 6805 states and 10248 transitions. Word has length 86 [2023-11-22 18:59:13,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:13,999 INFO L495 AbstractCegarLoop]: Abstraction has 6805 states and 10248 transitions. [2023-11-22 18:59:13,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6805 states and 10248 transitions. [2023-11-22 18:59:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-22 18:59:14,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:14,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:59:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 18:59:14,001 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:14,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1378658593, now seen corresponding path program 1 times [2023-11-22 18:59:14,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:14,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662888790] [2023-11-22 18:59:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:14,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:59:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662888790] [2023-11-22 18:59:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662888790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:59:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779196555] [2023-11-22 18:59:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:14,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:59:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:59:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:14,115 INFO L87 Difference]: Start difference. First operand 6805 states and 10248 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:14,191 INFO L93 Difference]: Finished difference Result 13802 states and 20854 transitions. [2023-11-22 18:59:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:59:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-22 18:59:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:14,206 INFO L225 Difference]: With dead ends: 13802 [2023-11-22 18:59:14,206 INFO L226 Difference]: Without dead ends: 10984 [2023-11-22 18:59:14,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:59:14,213 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 447 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:14,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 826 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10984 states. [2023-11-22 18:59:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10984 to 10209. [2023-11-22 18:59:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10209 states, 10208 states have (on average 1.5045062695924765) internal successors, (15358), 10208 states have internal predecessors, (15358), 0 states have call successors, (0), 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 18:59:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10209 states to 10209 states and 15358 transitions. [2023-11-22 18:59:14,353 INFO L78 Accepts]: Start accepts. Automaton has 10209 states and 15358 transitions. Word has length 86 [2023-11-22 18:59:14,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:14,353 INFO L495 AbstractCegarLoop]: Abstraction has 10209 states and 15358 transitions. [2023-11-22 18:59:14,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:14,354 INFO L276 IsEmpty]: Start isEmpty. Operand 10209 states and 15358 transitions. [2023-11-22 18:59:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-22 18:59:14,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:14,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:59:14,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 18:59:14,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:14,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash 54074919, now seen corresponding path program 1 times [2023-11-22 18:59:14,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:14,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562844489] [2023-11-22 18:59:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:14,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 18:59:14,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:14,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562844489] [2023-11-22 18:59:14,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562844489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:14,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:14,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:59:14,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697764226] [2023-11-22 18:59:14,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:14,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:59:14,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:59:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:14,477 INFO L87 Difference]: Start difference. First operand 10209 states and 15358 transitions. Second operand has 5 states, 5 states have (on average 17.0) 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 18:59:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:14,546 INFO L93 Difference]: Finished difference Result 14307 states and 21636 transitions. [2023-11-22 18:59:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:59:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) 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 86 [2023-11-22 18:59:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:14,563 INFO L225 Difference]: With dead ends: 14307 [2023-11-22 18:59:14,563 INFO L226 Difference]: Without dead ends: 12535 [2023-11-22 18:59:14,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:59:14,569 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 446 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:14,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 873 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12535 states. [2023-11-22 18:59:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12535 to 11769. [2023-11-22 18:59:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11769 states, 11768 states have (on average 1.5067980965329708) internal successors, (17732), 11768 states have internal predecessors, (17732), 0 states have call successors, (0), 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 18:59:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11769 states to 11769 states and 17732 transitions. [2023-11-22 18:59:14,698 INFO L78 Accepts]: Start accepts. Automaton has 11769 states and 17732 transitions. Word has length 86 [2023-11-22 18:59:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:14,699 INFO L495 AbstractCegarLoop]: Abstraction has 11769 states and 17732 transitions. [2023-11-22 18:59:14,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) 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 18:59:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 11769 states and 17732 transitions. [2023-11-22 18:59:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 18:59:14,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:14,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:59:14,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 18:59:14,701 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:14,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1755248203, now seen corresponding path program 1 times [2023-11-22 18:59:14,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:14,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090599897] [2023-11-22 18:59:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:14,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:59:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090599897] [2023-11-22 18:59:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090599897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:14,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:14,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:14,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143008819] [2023-11-22 18:59:14,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:14,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:14,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:14,815 INFO L87 Difference]: Start difference. First operand 11769 states and 17732 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:14,863 INFO L93 Difference]: Finished difference Result 22111 states and 33396 transitions. [2023-11-22 18:59:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:14,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-22 18:59:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:14,878 INFO L225 Difference]: With dead ends: 22111 [2023-11-22 18:59:14,878 INFO L226 Difference]: Without dead ends: 10417 [2023-11-22 18:59:14,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:14,889 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 79 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:14,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 395 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2023-11-22 18:59:14,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 10409. [2023-11-22 18:59:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10409 states, 10408 states have (on average 1.5039392774788625) internal successors, (15653), 10408 states have internal predecessors, (15653), 0 states have call successors, (0), 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 18:59:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10409 states to 10409 states and 15653 transitions. [2023-11-22 18:59:14,997 INFO L78 Accepts]: Start accepts. Automaton has 10409 states and 15653 transitions. Word has length 87 [2023-11-22 18:59:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:14,997 INFO L495 AbstractCegarLoop]: Abstraction has 10409 states and 15653 transitions. [2023-11-22 18:59:14,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 10409 states and 15653 transitions. [2023-11-22 18:59:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 18:59:14,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:14,999 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:59:14,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 18:59:14,999 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:15,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:15,000 INFO L85 PathProgramCache]: Analyzing trace with hash -759375634, now seen corresponding path program 1 times [2023-11-22 18:59:15,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:15,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084168154] [2023-11-22 18:59:15,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:15,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 18:59:15,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:15,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084168154] [2023-11-22 18:59:15,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084168154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:15,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:15,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:59:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973255287] [2023-11-22 18:59:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:59:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:15,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:59:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:59:15,203 INFO L87 Difference]: Start difference. First operand 10409 states and 15653 transitions. Second operand has 4 states, 4 states have (on average 21.5) 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 18:59:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:15,285 INFO L93 Difference]: Finished difference Result 29516 states and 44368 transitions. [2023-11-22 18:59:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:59:15,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) 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 87 [2023-11-22 18:59:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:15,315 INFO L225 Difference]: With dead ends: 29516 [2023-11-22 18:59:15,316 INFO L226 Difference]: Without dead ends: 21588 [2023-11-22 18:59:15,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:15,328 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 368 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:15,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 505 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21588 states. [2023-11-22 18:59:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21588 to 18251. [2023-11-22 18:59:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 18250 states have (on average 1.4998904109589042) internal successors, (27373), 18250 states have internal predecessors, (27373), 0 states have call successors, (0), 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 18:59:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 27373 transitions. [2023-11-22 18:59:15,628 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 27373 transitions. Word has length 87 [2023-11-22 18:59:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:15,629 INFO L495 AbstractCegarLoop]: Abstraction has 18251 states and 27373 transitions. [2023-11-22 18:59:15,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) 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 18:59:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 27373 transitions. [2023-11-22 18:59:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 18:59:15,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:15,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:15,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 18:59:15,631 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:15,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1453833189, now seen corresponding path program 1 times [2023-11-22 18:59:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:15,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801719188] [2023-11-22 18:59:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:15,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 18:59:15,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:15,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801719188] [2023-11-22 18:59:15,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801719188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:15,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:15,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338048497] [2023-11-22 18:59:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:15,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:15,673 INFO L87 Difference]: Start difference. First operand 18251 states and 27373 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 18:59:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:15,781 INFO L93 Difference]: Finished difference Result 42093 states and 63239 transitions. [2023-11-22 18:59:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:15,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 87 [2023-11-22 18:59:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:15,840 INFO L225 Difference]: With dead ends: 42093 [2023-11-22 18:59:15,840 INFO L226 Difference]: Without dead ends: 30786 [2023-11-22 18:59:15,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:15,858 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 88 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:15,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 337 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30786 states. [2023-11-22 18:59:16,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30786 to 30696. [2023-11-22 18:59:16,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30696 states, 30695 states have (on average 1.4974425802247924) internal successors, (45964), 30695 states have internal predecessors, (45964), 0 states have call successors, (0), 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 18:59:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30696 states to 30696 states and 45964 transitions. [2023-11-22 18:59:16,487 INFO L78 Accepts]: Start accepts. Automaton has 30696 states and 45964 transitions. Word has length 87 [2023-11-22 18:59:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:16,488 INFO L495 AbstractCegarLoop]: Abstraction has 30696 states and 45964 transitions. [2023-11-22 18:59:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 18:59:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 30696 states and 45964 transitions. [2023-11-22 18:59:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 18:59:16,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:16,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:59:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 18:59:16,489 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1690371767, now seen corresponding path program 1 times [2023-11-22 18:59:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976021846] [2023-11-22 18:59:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:59:16,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:16,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976021846] [2023-11-22 18:59:16,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976021846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:16,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:16,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:16,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531997535] [2023-11-22 18:59:16,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:16,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:16,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:16,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:16,564 INFO L87 Difference]: Start difference. First operand 30696 states and 45964 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:16,751 INFO L93 Difference]: Finished difference Result 44085 states and 66056 transitions. [2023-11-22 18:59:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:16,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-22 18:59:16,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:16,774 INFO L225 Difference]: With dead ends: 44085 [2023-11-22 18:59:16,775 INFO L226 Difference]: Without dead ends: 13485 [2023-11-22 18:59:16,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:16,796 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 57 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:16,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 373 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13485 states. [2023-11-22 18:59:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13485 to 13367. [2023-11-22 18:59:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13367 states, 13366 states have (on average 1.4882537782433038) internal successors, (19892), 13366 states have internal predecessors, (19892), 0 states have call successors, (0), 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 18:59:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 19892 transitions. [2023-11-22 18:59:16,998 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 19892 transitions. Word has length 87 [2023-11-22 18:59:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:16,999 INFO L495 AbstractCegarLoop]: Abstraction has 13367 states and 19892 transitions. [2023-11-22 18:59:16,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 19892 transitions. [2023-11-22 18:59:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 18:59:17,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:17,000 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:59:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 18:59:17,001 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:17,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:17,001 INFO L85 PathProgramCache]: Analyzing trace with hash 755933610, now seen corresponding path program 1 times [2023-11-22 18:59:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:17,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382667448] [2023-11-22 18:59:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 18:59:17,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:17,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382667448] [2023-11-22 18:59:17,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382667448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:17,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:17,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:59:17,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709173954] [2023-11-22 18:59:17,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:17,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:59:17,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:17,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:59:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:59:17,278 INFO L87 Difference]: Start difference. First operand 13367 states and 19892 transitions. Second operand has 4 states, 4 states have (on average 21.5) 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 18:59:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:17,379 INFO L93 Difference]: Finished difference Result 29803 states and 44425 transitions. [2023-11-22 18:59:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:59:17,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) 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 87 [2023-11-22 18:59:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:17,408 INFO L225 Difference]: With dead ends: 29803 [2023-11-22 18:59:17,408 INFO L226 Difference]: Without dead ends: 22710 [2023-11-22 18:59:17,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:17,419 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 318 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:17,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 533 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22710 states. [2023-11-22 18:59:17,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22710 to 20076. [2023-11-22 18:59:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20076 states, 20075 states have (on average 1.4868742216687423) internal successors, (29849), 20075 states have internal predecessors, (29849), 0 states have call successors, (0), 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 18:59:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20076 states to 20076 states and 29849 transitions. [2023-11-22 18:59:17,653 INFO L78 Accepts]: Start accepts. Automaton has 20076 states and 29849 transitions. Word has length 87 [2023-11-22 18:59:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:17,653 INFO L495 AbstractCegarLoop]: Abstraction has 20076 states and 29849 transitions. [2023-11-22 18:59:17,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) 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 18:59:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 20076 states and 29849 transitions. [2023-11-22 18:59:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-22 18:59:17,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:17,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 18:59:17,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 18:59:17,656 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:17,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash 283092314, now seen corresponding path program 1 times [2023-11-22 18:59:17,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:17,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523404563] [2023-11-22 18:59:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:17,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:59:17,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523404563] [2023-11-22 18:59:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523404563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:17,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:17,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:17,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592429028] [2023-11-22 18:59:17,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:17,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:17,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:17,700 INFO L87 Difference]: Start difference. First operand 20076 states and 29849 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 18:59:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:17,898 INFO L93 Difference]: Finished difference Result 40774 states and 60737 transitions. [2023-11-22 18:59:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:17,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 133 [2023-11-22 18:59:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:17,922 INFO L225 Difference]: With dead ends: 40774 [2023-11-22 18:59:17,923 INFO L226 Difference]: Without dead ends: 17894 [2023-11-22 18:59:17,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:17,936 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 87 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:17,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 439 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:17,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17894 states. [2023-11-22 18:59:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17894 to 13757. [2023-11-22 18:59:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13757 states, 13756 states have (on average 1.4707763884850247) internal successors, (20232), 13756 states have internal predecessors, (20232), 0 states have call successors, (0), 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 18:59:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13757 states to 13757 states and 20232 transitions. [2023-11-22 18:59:18,071 INFO L78 Accepts]: Start accepts. Automaton has 13757 states and 20232 transitions. Word has length 133 [2023-11-22 18:59:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:18,071 INFO L495 AbstractCegarLoop]: Abstraction has 13757 states and 20232 transitions. [2023-11-22 18:59:18,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 18:59:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13757 states and 20232 transitions. [2023-11-22 18:59:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-22 18:59:18,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:18,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 18:59:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 18:59:18,074 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1365730503, now seen corresponding path program 1 times [2023-11-22 18:59:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842954819] [2023-11-22 18:59:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 18:59:18,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:18,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842954819] [2023-11-22 18:59:18,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842954819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:18,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:18,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:59:18,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369424744] [2023-11-22 18:59:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:18,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:59:18,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:18,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:59:18,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:18,261 INFO L87 Difference]: Start difference. First operand 13757 states and 20232 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 18:59:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:18,345 INFO L93 Difference]: Finished difference Result 22878 states and 34025 transitions. [2023-11-22 18:59:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:59:18,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 139 [2023-11-22 18:59:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:18,363 INFO L225 Difference]: With dead ends: 22878 [2023-11-22 18:59:18,364 INFO L226 Difference]: Without dead ends: 17030 [2023-11-22 18:59:18,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:59:18,373 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 421 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:18,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 628 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17030 states. [2023-11-22 18:59:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17030 to 16468. [2023-11-22 18:59:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16468 states, 16467 states have (on average 1.4878241331147142) internal successors, (24500), 16467 states have internal predecessors, (24500), 0 states have call successors, (0), 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 18:59:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16468 states to 16468 states and 24500 transitions. [2023-11-22 18:59:18,682 INFO L78 Accepts]: Start accepts. Automaton has 16468 states and 24500 transitions. Word has length 139 [2023-11-22 18:59:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:18,682 INFO L495 AbstractCegarLoop]: Abstraction has 16468 states and 24500 transitions. [2023-11-22 18:59:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 18:59:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 16468 states and 24500 transitions. [2023-11-22 18:59:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-22 18:59:18,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:18,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 18:59:18,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 18:59:18,684 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:18,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1831530511, now seen corresponding path program 1 times [2023-11-22 18:59:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:18,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449961622] [2023-11-22 18:59:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:59:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:18,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449961622] [2023-11-22 18:59:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449961622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:18,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:59:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166095701] [2023-11-22 18:59:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:18,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:59:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:59:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:59:18,765 INFO L87 Difference]: Start difference. First operand 16468 states and 24500 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 18:59:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:18,844 INFO L93 Difference]: Finished difference Result 33919 states and 50812 transitions. [2023-11-22 18:59:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:59:18,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 139 [2023-11-22 18:59:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:18,869 INFO L225 Difference]: With dead ends: 33919 [2023-11-22 18:59:18,870 INFO L226 Difference]: Without dead ends: 22468 [2023-11-22 18:59:18,882 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 18:59:18,883 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 180 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:18,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 583 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22468 states. [2023-11-22 18:59:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22468 to 21783. [2023-11-22 18:59:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 21782 states have (on average 1.4892112753649802) internal successors, (32438), 21782 states have internal predecessors, (32438), 0 states have call successors, (0), 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 18:59:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 32438 transitions. [2023-11-22 18:59:19,209 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 32438 transitions. Word has length 139 [2023-11-22 18:59:19,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:19,210 INFO L495 AbstractCegarLoop]: Abstraction has 21783 states and 32438 transitions. [2023-11-22 18:59:19,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 18:59:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 32438 transitions. [2023-11-22 18:59:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-22 18:59:19,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:19,212 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 18:59:19,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 18:59:19,213 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:19,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2004090399, now seen corresponding path program 1 times [2023-11-22 18:59:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679383235] [2023-11-22 18:59:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:19,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-22 18:59:19,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679383235] [2023-11-22 18:59:19,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679383235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:19,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:19,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:19,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579772838] [2023-11-22 18:59:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:19,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:19,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:19,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:19,311 INFO L87 Difference]: Start difference. First operand 21783 states and 32438 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 18:59:19,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:19,461 INFO L93 Difference]: Finished difference Result 29261 states and 43617 transitions. [2023-11-22 18:59:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:19,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 139 [2023-11-22 18:59:19,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:19,471 INFO L225 Difference]: With dead ends: 29261 [2023-11-22 18:59:19,472 INFO L226 Difference]: Without dead ends: 7588 [2023-11-22 18:59:19,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:19,480 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 42 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:19,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 321 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2023-11-22 18:59:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 7582. [2023-11-22 18:59:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7582 states, 7581 states have (on average 1.482785912148793) internal successors, (11241), 7581 states have internal predecessors, (11241), 0 states have call successors, (0), 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 18:59:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7582 states to 7582 states and 11241 transitions. [2023-11-22 18:59:19,549 INFO L78 Accepts]: Start accepts. Automaton has 7582 states and 11241 transitions. Word has length 139 [2023-11-22 18:59:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:19,549 INFO L495 AbstractCegarLoop]: Abstraction has 7582 states and 11241 transitions. [2023-11-22 18:59:19,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 18:59:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7582 states and 11241 transitions. [2023-11-22 18:59:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-22 18:59:19,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:19,553 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 18:59:19,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 18:59:19,553 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:19,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:19,554 INFO L85 PathProgramCache]: Analyzing trace with hash 485809723, now seen corresponding path program 1 times [2023-11-22 18:59:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081106039] [2023-11-22 18:59:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 59 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:59:19,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:19,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081106039] [2023-11-22 18:59:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081106039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:59:19,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618010840] [2023-11-22 18:59:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:19,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:59:19,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:59:19,729 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 18:59:19,757 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 18:59:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:19,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-22 18:59:19,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:59:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 59 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 18:59:20,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:59:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 59 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 18:59:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618010840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:59:20,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:59:20,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 13 [2023-11-22 18:59:20,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489535246] [2023-11-22 18:59:20,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:59:20,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:59:20,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:59:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:59:20,820 INFO L87 Difference]: Start difference. First operand 7582 states and 11241 transitions. Second operand has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:21,016 INFO L93 Difference]: Finished difference Result 18416 states and 27106 transitions. [2023-11-22 18:59:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 18:59:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-11-22 18:59:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:21,026 INFO L225 Difference]: With dead ends: 18416 [2023-11-22 18:59:21,026 INFO L226 Difference]: Without dead ends: 10944 [2023-11-22 18:59:21,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:59:21,034 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 853 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:21,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1695 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:59:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10944 states. [2023-11-22 18:59:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10944 to 7876. [2023-11-22 18:59:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7875 states have (on average 1.4792380952380952) internal successors, (11649), 7875 states have internal predecessors, (11649), 0 states have call successors, (0), 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 18:59:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 11649 transitions. [2023-11-22 18:59:21,122 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 11649 transitions. Word has length 141 [2023-11-22 18:59:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:21,123 INFO L495 AbstractCegarLoop]: Abstraction has 7876 states and 11649 transitions. [2023-11-22 18:59:21,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 11649 transitions. [2023-11-22 18:59:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-22 18:59:21,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:21,125 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-11-22 18:59:21,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 18:59:21,336 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,SelfDestructingSolverStorable21 [2023-11-22 18:59:21,336 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:21,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1558531950, now seen corresponding path program 1 times [2023-11-22 18:59:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:21,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51836587] [2023-11-22 18:59:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:21,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 64 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:59:21,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51836587] [2023-11-22 18:59:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51836587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:59:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384350196] [2023-11-22 18:59:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:21,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:59:21,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:59:21,485 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 18:59:21,553 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 18:59:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:21,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-22 18:59:21,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:59:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 64 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:59:21,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:59:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 61 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-22 18:59:22,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384350196] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:59:22,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:59:22,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 8] total 15 [2023-11-22 18:59:22,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928256206] [2023-11-22 18:59:22,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:59:22,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 18:59:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:22,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 18:59:22,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:59:22,326 INFO L87 Difference]: Start difference. First operand 7876 states and 11649 transitions. Second operand has 15 states, 15 states have (on average 20.2) internal successors, (303), 15 states have internal predecessors, (303), 0 states have call successors, (0), 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 18:59:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:22,517 INFO L93 Difference]: Finished difference Result 21391 states and 30920 transitions. [2023-11-22 18:59:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 18:59:22,518 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.2) internal successors, (303), 15 states have internal predecessors, (303), 0 states have call successors, (0), 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 143 [2023-11-22 18:59:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:22,531 INFO L225 Difference]: With dead ends: 21391 [2023-11-22 18:59:22,531 INFO L226 Difference]: Without dead ends: 13633 [2023-11-22 18:59:22,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-11-22 18:59:22,539 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 959 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:22,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2227 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:59:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13633 states. [2023-11-22 18:59:22,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13633 to 8798. [2023-11-22 18:59:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8798 states, 8797 states have (on average 1.4393543253381835) internal successors, (12662), 8797 states have internal predecessors, (12662), 0 states have call successors, (0), 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 18:59:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8798 states to 8798 states and 12662 transitions. [2023-11-22 18:59:22,635 INFO L78 Accepts]: Start accepts. Automaton has 8798 states and 12662 transitions. Word has length 143 [2023-11-22 18:59:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:22,635 INFO L495 AbstractCegarLoop]: Abstraction has 8798 states and 12662 transitions. [2023-11-22 18:59:22,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.2) internal successors, (303), 15 states have internal predecessors, (303), 0 states have call successors, (0), 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 18:59:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 8798 states and 12662 transitions. [2023-11-22 18:59:22,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-22 18:59:22,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:22,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:59:22,649 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 18:59:22,848 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,SelfDestructingSolverStorable22 [2023-11-22 18:59:22,849 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:22,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1091328603, now seen corresponding path program 1 times [2023-11-22 18:59:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:22,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375293728] [2023-11-22 18:59:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-22 18:59:23,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:23,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375293728] [2023-11-22 18:59:23,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375293728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:23,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:23,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634781516] [2023-11-22 18:59:23,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:23,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:59:23,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:59:23,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:59:23,019 INFO L87 Difference]: Start difference. First operand 8798 states and 12662 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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 18:59:23,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:23,087 INFO L93 Difference]: Finished difference Result 25916 states and 37221 transitions. [2023-11-22 18:59:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:59:23,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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 145 [2023-11-22 18:59:23,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:23,102 INFO L225 Difference]: With dead ends: 25916 [2023-11-22 18:59:23,103 INFO L226 Difference]: Without dead ends: 17126 [2023-11-22 18:59:23,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 18:59:23,113 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 379 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:23,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 443 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17126 states. [2023-11-22 18:59:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17126 to 17124. [2023-11-22 18:59:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17124 states, 17123 states have (on average 1.4242247269754131) internal successors, (24387), 17123 states have internal predecessors, (24387), 0 states have call successors, (0), 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 18:59:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17124 states to 17124 states and 24387 transitions. [2023-11-22 18:59:23,288 INFO L78 Accepts]: Start accepts. Automaton has 17124 states and 24387 transitions. Word has length 145 [2023-11-22 18:59:23,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:23,288 INFO L495 AbstractCegarLoop]: Abstraction has 17124 states and 24387 transitions. [2023-11-22 18:59:23,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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 18:59:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 17124 states and 24387 transitions. [2023-11-22 18:59:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-22 18:59:23,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:23,291 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:59:23,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 18:59:23,291 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:23,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1154501331, now seen corresponding path program 1 times [2023-11-22 18:59:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:23,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076015985] [2023-11-22 18:59:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-22 18:59:23,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:23,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076015985] [2023-11-22 18:59:23,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076015985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:23,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:23,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097227235] [2023-11-22 18:59:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:23,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:23,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:23,326 INFO L87 Difference]: Start difference. First operand 17124 states and 24387 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:23,424 INFO L93 Difference]: Finished difference Result 51336 states and 73101 transitions. [2023-11-22 18:59:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2023-11-22 18:59:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:23,458 INFO L225 Difference]: With dead ends: 51336 [2023-11-22 18:59:23,458 INFO L226 Difference]: Without dead ends: 34239 [2023-11-22 18:59:23,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:23,478 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 175 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:23,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 532 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34239 states. [2023-11-22 18:59:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34239 to 17126. [2023-11-22 18:59:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17126 states, 17125 states have (on average 1.424175182481752) internal successors, (24389), 17125 states have internal predecessors, (24389), 0 states have call successors, (0), 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 18:59:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17126 states to 17126 states and 24389 transitions. [2023-11-22 18:59:23,749 INFO L78 Accepts]: Start accepts. Automaton has 17126 states and 24389 transitions. Word has length 146 [2023-11-22 18:59:23,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:23,749 INFO L495 AbstractCegarLoop]: Abstraction has 17126 states and 24389 transitions. [2023-11-22 18:59:23,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:23,750 INFO L276 IsEmpty]: Start isEmpty. Operand 17126 states and 24389 transitions. [2023-11-22 18:59:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 18:59:23,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:23,752 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:59:23,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 18:59:23,752 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:23,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1237318619, now seen corresponding path program 1 times [2023-11-22 18:59:23,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059517103] [2023-11-22 18:59:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:23,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-22 18:59:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059517103] [2023-11-22 18:59:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059517103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:23,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:23,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:23,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248430284] [2023-11-22 18:59:23,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:23,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:23,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:23,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:23,798 INFO L87 Difference]: Start difference. First operand 17126 states and 24389 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 18:59:23,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:23,896 INFO L93 Difference]: Finished difference Result 50546 states and 71850 transitions. [2023-11-22 18:59:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:23,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 147 [2023-11-22 18:59:23,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:23,930 INFO L225 Difference]: With dead ends: 50546 [2023-11-22 18:59:23,930 INFO L226 Difference]: Without dead ends: 33585 [2023-11-22 18:59:23,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:23,948 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 128 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:23,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 479 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33585 states. [2023-11-22 18:59:24,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33585 to 33583. [2023-11-22 18:59:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33583 states, 33582 states have (on average 1.4111726520159609) internal successors, (47390), 33582 states have internal predecessors, (47390), 0 states have call successors, (0), 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 18:59:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33583 states to 33583 states and 47390 transitions. [2023-11-22 18:59:24,319 INFO L78 Accepts]: Start accepts. Automaton has 33583 states and 47390 transitions. Word has length 147 [2023-11-22 18:59:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:24,319 INFO L495 AbstractCegarLoop]: Abstraction has 33583 states and 47390 transitions. [2023-11-22 18:59:24,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 18:59:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 33583 states and 47390 transitions. [2023-11-22 18:59:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 18:59:24,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:24,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:59:24,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 18:59:24,323 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:24,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:24,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1744749944, now seen corresponding path program 1 times [2023-11-22 18:59:24,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:24,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609868907] [2023-11-22 18:59:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-22 18:59:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609868907] [2023-11-22 18:59:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609868907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:24,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:24,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:59:24,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518115809] [2023-11-22 18:59:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:24,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:59:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:59:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:24,453 INFO L87 Difference]: Start difference. First operand 33583 states and 47390 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:24,649 INFO L93 Difference]: Finished difference Result 98529 states and 138591 transitions. [2023-11-22 18:59:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:59:24,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-11-22 18:59:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:24,718 INFO L225 Difference]: With dead ends: 98529 [2023-11-22 18:59:24,718 INFO L226 Difference]: Without dead ends: 64959 [2023-11-22 18:59:24,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:59:24,751 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 544 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:24,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 436 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64959 states. [2023-11-22 18:59:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64959 to 64957. [2023-11-22 18:59:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64957 states, 64956 states have (on average 1.3902641788287455) internal successors, (90306), 64956 states have internal predecessors, (90306), 0 states have call successors, (0), 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 18:59:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64957 states to 64957 states and 90306 transitions. [2023-11-22 18:59:25,503 INFO L78 Accepts]: Start accepts. Automaton has 64957 states and 90306 transitions. Word has length 147 [2023-11-22 18:59:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:25,503 INFO L495 AbstractCegarLoop]: Abstraction has 64957 states and 90306 transitions. [2023-11-22 18:59:25,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 64957 states and 90306 transitions. [2023-11-22 18:59:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 18:59:25,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:25,509 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:59:25,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-22 18:59:25,509 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:25,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash 495150940, now seen corresponding path program 1 times [2023-11-22 18:59:25,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:25,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236242611] [2023-11-22 18:59:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:25,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 18:59:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236242611] [2023-11-22 18:59:25,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236242611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:25,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:25,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709635655] [2023-11-22 18:59:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:25,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:59:25,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:59:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:59:25,665 INFO L87 Difference]: Start difference. First operand 64957 states and 90306 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 18:59:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:25,991 INFO L93 Difference]: Finished difference Result 190152 states and 263451 transitions. [2023-11-22 18:59:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:59:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 147 [2023-11-22 18:59:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:26,142 INFO L225 Difference]: With dead ends: 190152 [2023-11-22 18:59:26,143 INFO L226 Difference]: Without dead ends: 125250 [2023-11-22 18:59:26,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 18:59:26,206 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 363 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:26,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 424 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125250 states. [2023-11-22 18:59:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125250 to 125248. [2023-11-22 18:59:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125248 states, 125247 states have (on average 1.3697733279040616) internal successors, (171560), 125247 states have internal predecessors, (171560), 0 states have call successors, (0), 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 18:59:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125248 states to 125248 states and 171560 transitions. [2023-11-22 18:59:27,786 INFO L78 Accepts]: Start accepts. Automaton has 125248 states and 171560 transitions. Word has length 147 [2023-11-22 18:59:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:27,787 INFO L495 AbstractCegarLoop]: Abstraction has 125248 states and 171560 transitions. [2023-11-22 18:59:27,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 18:59:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 125248 states and 171560 transitions. [2023-11-22 18:59:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-22 18:59:27,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:27,796 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:59:27,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-22 18:59:27,796 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:27,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash -872942028, now seen corresponding path program 1 times [2023-11-22 18:59:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:27,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025690649] [2023-11-22 18:59:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:27,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-22 18:59:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025690649] [2023-11-22 18:59:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025690649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:27,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:27,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:27,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846563114] [2023-11-22 18:59:27,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:27,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:27,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:27,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:27,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:27,832 INFO L87 Difference]: Start difference. First operand 125248 states and 171560 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 18:59:28,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:28,552 INFO L93 Difference]: Finished difference Result 375594 states and 514449 transitions. [2023-11-22 18:59:28,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:28,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 148 [2023-11-22 18:59:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:28,912 INFO L225 Difference]: With dead ends: 375594 [2023-11-22 18:59:28,913 INFO L226 Difference]: Without dead ends: 250436 [2023-11-22 18:59:29,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:29,035 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 161 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:29,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 426 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:30,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250436 states. [2023-11-22 18:59:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250436 to 125258. [2023-11-22 18:59:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125258 states, 125257 states have (on average 1.3697438067333563) internal successors, (171570), 125257 states have internal predecessors, (171570), 0 states have call successors, (0), 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 18:59:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125258 states to 125258 states and 171570 transitions. [2023-11-22 18:59:33,315 INFO L78 Accepts]: Start accepts. Automaton has 125258 states and 171570 transitions. Word has length 148 [2023-11-22 18:59:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:33,316 INFO L495 AbstractCegarLoop]: Abstraction has 125258 states and 171570 transitions. [2023-11-22 18:59:33,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 18:59:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 125258 states and 171570 transitions. [2023-11-22 18:59:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-22 18:59:33,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:33,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:59:33,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-22 18:59:33,358 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:33,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1251833635, now seen corresponding path program 1 times [2023-11-22 18:59:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:33,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971892606] [2023-11-22 18:59:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-22 18:59:33,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:33,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971892606] [2023-11-22 18:59:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971892606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:33,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:33,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939354337] [2023-11-22 18:59:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:33,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:59:33,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:59:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:59:33,501 INFO L87 Difference]: Start difference. First operand 125258 states and 171570 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 18:59:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:34,561 INFO L93 Difference]: Finished difference Result 325106 states and 443787 transitions. [2023-11-22 18:59:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:59:34,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 149 [2023-11-22 18:59:34,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:34,900 INFO L225 Difference]: With dead ends: 325106 [2023-11-22 18:59:34,900 INFO L226 Difference]: Without dead ends: 199948 [2023-11-22 18:59:34,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 18:59:34,971 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 359 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:34,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 411 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:59:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199948 states. [2023-11-22 18:59:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199948 to 199946. [2023-11-22 18:59:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199946 states, 199945 states have (on average 1.3501913026082173) internal successors, (269964), 199945 states have internal predecessors, (269964), 0 states have call successors, (0), 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 18:59:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199946 states to 199946 states and 269964 transitions. [2023-11-22 18:59:38,017 INFO L78 Accepts]: Start accepts. Automaton has 199946 states and 269964 transitions. Word has length 149 [2023-11-22 18:59:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:59:38,018 INFO L495 AbstractCegarLoop]: Abstraction has 199946 states and 269964 transitions. [2023-11-22 18:59:38,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 18:59:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 199946 states and 269964 transitions. [2023-11-22 18:59:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-22 18:59:38,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:59:38,033 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:59:38,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-22 18:59:38,033 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:59:38,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:59:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash -668807659, now seen corresponding path program 1 times [2023-11-22 18:59:38,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:59:38,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070877063] [2023-11-22 18:59:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:59:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:59:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:59:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-22 18:59:38,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:59:38,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070877063] [2023-11-22 18:59:38,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070877063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:59:38,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:59:38,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:59:38,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988682964] [2023-11-22 18:59:38,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:59:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:59:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:59:38,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:59:38,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:38,070 INFO L87 Difference]: Start difference. First operand 199946 states and 269964 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:59:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:59:39,891 INFO L93 Difference]: Finished difference Result 598772 states and 808522 transitions. [2023-11-22 18:59:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:59:39,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2023-11-22 18:59:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:59:40,572 INFO L225 Difference]: With dead ends: 598772 [2023-11-22 18:59:40,572 INFO L226 Difference]: Without dead ends: 399628 [2023-11-22 18:59:40,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:59:40,744 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 147 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:59:40,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 504 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]