./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c --full-output --preprocessor.use.memory.slicer false --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/psyco/psyco_abp_1-3.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 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:52:09,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:52:09,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 22:52:09,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:52:09,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:52:09,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:52:09,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:52:09,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:52:09,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:52:09,771 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:52:09,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:52:09,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:52:09,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:52:09,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:52:09,774 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:52:09,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:52:09,774 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:52:09,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 22:52:09,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:52:09,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 22:52:09,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:52:09,776 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:52:09,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:52:09,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:52:09,776 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 22:52:09,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:52:09,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:52:09,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:52:09,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:52:09,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:52:09,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:52:09,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:52:09,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:52:09,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:52:09,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:52:09,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:52:09,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:52:09,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:52:09,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:52:09,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:52:09,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:52:09,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:52:09,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 22:52:09,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:52:10,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:52:10,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:52:10,018 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:52:10,018 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:52:10,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2023-11-22 22:52:11,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:52:11,243 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:52:11,252 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2023-11-22 22:52:11,262 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc6ea478/82f36b52416a4bdf87b8af60588f1785/FLAG17e7dd5af [2023-11-22 22:52:11,272 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc6ea478/82f36b52416a4bdf87b8af60588f1785 [2023-11-22 22:52:11,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:52:11,275 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:52:11,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:52:11,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:52:11,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:52:11,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ccc4ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11, skipping insertion in model container [2023-11-22 22:52:11,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:52:11,540 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-3.c[24720,24733] [2023-11-22 22:52:11,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:52:11,565 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:52:11,670 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-3.c[24720,24733] [2023-11-22 22:52:11,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:52:11,694 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:52:11,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11 WrapperNode [2023-11-22 22:52:11,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:52:11,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:52:11,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:52:11,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:52:11,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,763 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 455 [2023-11-22 22:52:11,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:52:11,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:52:11,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:52:11,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:52:11,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:52:11,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:52:11,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:52:11,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:52:11,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (1/1) ... [2023-11-22 22:52:11,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:52:11,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:11,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 22:52:11,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 22:52:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:52:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:52:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:52:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 22:52:11,993 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:52:11,996 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:52:12,451 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:52:12,471 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:52:12,472 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 22:52:12,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:52:12 BoogieIcfgContainer [2023-11-22 22:52:12,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:52:12,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:52:12,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:52:12,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:52:12,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:52:11" (1/3) ... [2023-11-22 22:52:12,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd20e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:52:12, skipping insertion in model container [2023-11-22 22:52:12,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:11" (2/3) ... [2023-11-22 22:52:12,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd20e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:52:12, skipping insertion in model container [2023-11-22 22:52:12,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:52:12" (3/3) ... [2023-11-22 22:52:12,508 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2023-11-22 22:52:12,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:52:12,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:52:12,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:52:12,565 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;@70b4d727, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:52:12,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:52:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.9714285714285715) internal successors, (207), 106 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-22 22:52:12,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:12,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:12,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:12,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 507715632, now seen corresponding path program 1 times [2023-11-22 22:52:12,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:12,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348637576] [2023-11-22 22:52:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:12,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:12,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:12,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348637576] [2023-11-22 22:52:12,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348637576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:12,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:12,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 22:52:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543267568] [2023-11-22 22:52:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:12,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 22:52:12,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:12,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 22:52:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 22:52:12,761 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.9714285714285715) internal successors, (207), 106 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:12,807 INFO L93 Difference]: Finished difference Result 213 states and 413 transitions. [2023-11-22 22:52:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 22:52:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-22 22:52:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:12,848 INFO L225 Difference]: With dead ends: 213 [2023-11-22 22:52:12,848 INFO L226 Difference]: Without dead ends: 99 [2023-11-22 22:52:12,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 22:52:12,858 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:12,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-22 22:52:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-22 22:52:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.6734693877551021) internal successors, (164), 98 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 164 transitions. [2023-11-22 22:52:12,928 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 164 transitions. Word has length 8 [2023-11-22 22:52:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:12,929 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 164 transitions. [2023-11-22 22:52:12,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 164 transitions. [2023-11-22 22:52:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-22 22:52:12,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:12,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:12,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:52:12,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:12,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:12,932 INFO L85 PathProgramCache]: Analyzing trace with hash -908197106, now seen corresponding path program 1 times [2023-11-22 22:52:12,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:12,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730280596] [2023-11-22 22:52:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:13,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:13,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730280596] [2023-11-22 22:52:13,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730280596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:13,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:13,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 22:52:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588440492] [2023-11-22 22:52:13,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:13,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:52:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:13,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:52:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:13,025 INFO L87 Difference]: Start difference. First operand 99 states and 164 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:13,081 INFO L93 Difference]: Finished difference Result 200 states and 331 transitions. [2023-11-22 22:52:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:52:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-11-22 22:52:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:13,083 INFO L225 Difference]: With dead ends: 200 [2023-11-22 22:52:13,083 INFO L226 Difference]: Without dead ends: 102 [2023-11-22 22:52:13,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:13,086 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:13,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 305 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-22 22:52:13,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-11-22 22:52:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.6534653465346534) internal successors, (167), 101 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 167 transitions. [2023-11-22 22:52:13,100 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 167 transitions. Word has length 9 [2023-11-22 22:52:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:13,101 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 167 transitions. [2023-11-22 22:52:13,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 167 transitions. [2023-11-22 22:52:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-22 22:52:13,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:13,102 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:13,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 22:52:13,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:13,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1273080147, now seen corresponding path program 1 times [2023-11-22 22:52:13,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:13,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411366772] [2023-11-22 22:52:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:13,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411366772] [2023-11-22 22:52:13,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411366772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:13,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:13,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:52:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30746463] [2023-11-22 22:52:13,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:13,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:52:13,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:13,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:52:13,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:52:13,432 INFO L87 Difference]: Start difference. First operand 102 states and 167 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:13,660 INFO L93 Difference]: Finished difference Result 209 states and 336 transitions. [2023-11-22 22:52:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:52:13,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-11-22 22:52:13,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:13,664 INFO L225 Difference]: With dead ends: 209 [2023-11-22 22:52:13,664 INFO L226 Difference]: Without dead ends: 190 [2023-11-22 22:52:13,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:52:13,669 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 157 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:13,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 438 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:52:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-22 22:52:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 171. [2023-11-22 22:52:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.6470588235294117) internal successors, (280), 170 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 280 transitions. [2023-11-22 22:52:13,683 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 280 transitions. Word has length 14 [2023-11-22 22:52:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:13,684 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 280 transitions. [2023-11-22 22:52:13,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 280 transitions. [2023-11-22 22:52:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-22 22:52:13,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:13,689 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:13,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 22:52:13,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:13,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:13,693 INFO L85 PathProgramCache]: Analyzing trace with hash -732941141, now seen corresponding path program 1 times [2023-11-22 22:52:13,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:13,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683857184] [2023-11-22 22:52:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:13,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:13,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683857184] [2023-11-22 22:52:13,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683857184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:13,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:13,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:52:13,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921195318] [2023-11-22 22:52:13,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:13,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:52:13,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:13,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:52:13,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:13,727 INFO L87 Difference]: Start difference. First operand 171 states and 280 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:13,745 INFO L93 Difference]: Finished difference Result 292 states and 476 transitions. [2023-11-22 22:52:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:52:13,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-11-22 22:52:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:13,746 INFO L225 Difference]: With dead ends: 292 [2023-11-22 22:52:13,746 INFO L226 Difference]: Without dead ends: 123 [2023-11-22 22:52:13,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:13,755 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 30 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:13,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 280 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-22 22:52:13,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2023-11-22 22:52:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.6083333333333334) internal successors, (193), 120 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 193 transitions. [2023-11-22 22:52:13,768 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 193 transitions. Word has length 15 [2023-11-22 22:52:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:13,768 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 193 transitions. [2023-11-22 22:52:13,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 193 transitions. [2023-11-22 22:52:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-22 22:52:13,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:13,770 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:13,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 22:52:13,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:13,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1137734602, now seen corresponding path program 1 times [2023-11-22 22:52:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:13,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333748490] [2023-11-22 22:52:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 22:52:13,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:13,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333748490] [2023-11-22 22:52:13,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333748490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:13,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:13,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:52:13,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656810279] [2023-11-22 22:52:13,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:13,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:52:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:52:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:13,817 INFO L87 Difference]: Start difference. First operand 121 states and 193 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:13,843 INFO L93 Difference]: Finished difference Result 247 states and 394 transitions. [2023-11-22 22:52:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:52:13,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 20 [2023-11-22 22:52:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:13,845 INFO L225 Difference]: With dead ends: 247 [2023-11-22 22:52:13,845 INFO L226 Difference]: Without dead ends: 128 [2023-11-22 22:52:13,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:13,846 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 32 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:13,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 279 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-22 22:52:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2023-11-22 22:52:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.584) internal successors, (198), 125 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 198 transitions. [2023-11-22 22:52:13,858 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 198 transitions. Word has length 20 [2023-11-22 22:52:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:13,858 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 198 transitions. [2023-11-22 22:52:13,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 198 transitions. [2023-11-22 22:52:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-22 22:52:13,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:13,859 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:13,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 22:52:13,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:13,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:13,860 INFO L85 PathProgramCache]: Analyzing trace with hash -330273353, now seen corresponding path program 1 times [2023-11-22 22:52:13,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:13,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037821286] [2023-11-22 22:52:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:13,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037821286] [2023-11-22 22:52:14,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037821286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:14,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340630797] [2023-11-22 22:52:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:14,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:14,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:14,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:14,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 22:52:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:14,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:52:14,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:14,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:52:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340630797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:52:14,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:52:14,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-11-22 22:52:14,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294234740] [2023-11-22 22:52:14,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:52:14,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:52:14,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:14,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:52:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:52:14,267 INFO L87 Difference]: Start difference. First operand 126 states and 198 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 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 22:52:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:14,704 INFO L93 Difference]: Finished difference Result 468 states and 733 transitions. [2023-11-22 22:52:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:52:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 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 22 [2023-11-22 22:52:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:14,706 INFO L225 Difference]: With dead ends: 468 [2023-11-22 22:52:14,706 INFO L226 Difference]: Without dead ends: 416 [2023-11-22 22:52:14,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-22 22:52:14,706 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1180 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:14,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1420 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 22:52:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-22 22:52:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 347. [2023-11-22 22:52:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.5895953757225434) internal successors, (550), 346 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 550 transitions. [2023-11-22 22:52:14,713 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 550 transitions. Word has length 22 [2023-11-22 22:52:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:14,713 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 550 transitions. [2023-11-22 22:52:14,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 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 22:52:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 550 transitions. [2023-11-22 22:52:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-22 22:52:14,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:14,714 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:14,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:14,928 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,SelfDestructingSolverStorable5 [2023-11-22 22:52:14,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:14,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1972300679, now seen corresponding path program 1 times [2023-11-22 22:52:14,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:14,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892718275] [2023-11-22 22:52:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:14,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892718275] [2023-11-22 22:52:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892718275] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989618547] [2023-11-22 22:52:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:15,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:15,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:15,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 22:52:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:15,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:52:15,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 22:52:15,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:15,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989618547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:15,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:15,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 22:52:15,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715824824] [2023-11-22 22:52:15,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:15,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:52:15,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:15,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:52:15,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:15,267 INFO L87 Difference]: Start difference. First operand 347 states and 550 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:15,275 INFO L93 Difference]: Finished difference Result 354 states and 556 transitions. [2023-11-22 22:52:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:52:15,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 26 [2023-11-22 22:52:15,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:15,277 INFO L225 Difference]: With dead ends: 354 [2023-11-22 22:52:15,277 INFO L226 Difference]: Without dead ends: 347 [2023-11-22 22:52:15,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:15,278 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 145 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:15,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 160 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-22 22:52:15,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2023-11-22 22:52:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.5689149560117301) internal successors, (535), 341 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 535 transitions. [2023-11-22 22:52:15,291 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 535 transitions. Word has length 26 [2023-11-22 22:52:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:15,291 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 535 transitions. [2023-11-22 22:52:15,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 535 transitions. [2023-11-22 22:52:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-22 22:52:15,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:15,295 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:15,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:15,495 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,SelfDestructingSolverStorable6 [2023-11-22 22:52:15,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:15,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash 327693256, now seen corresponding path program 1 times [2023-11-22 22:52:15,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:15,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546131377] [2023-11-22 22:52:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-22 22:52:15,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546131377] [2023-11-22 22:52:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546131377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:15,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:52:15,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340911092] [2023-11-22 22:52:15,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:15,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:52:15,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:52:15,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:15,537 INFO L87 Difference]: Start difference. First operand 342 states and 535 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:15,557 INFO L93 Difference]: Finished difference Result 582 states and 906 transitions. [2023-11-22 22:52:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:52:15,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 29 [2023-11-22 22:52:15,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:15,559 INFO L225 Difference]: With dead ends: 582 [2023-11-22 22:52:15,559 INFO L226 Difference]: Without dead ends: 242 [2023-11-22 22:52:15,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:15,560 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 61 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:15,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 181 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-22 22:52:15,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2023-11-22 22:52:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.506276150627615) internal successors, (360), 239 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 360 transitions. [2023-11-22 22:52:15,567 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 360 transitions. Word has length 29 [2023-11-22 22:52:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:15,567 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 360 transitions. [2023-11-22 22:52:15,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 360 transitions. [2023-11-22 22:52:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-22 22:52:15,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:15,572 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-11-22 22:52:15,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 22:52:15,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:15,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1463278148, now seen corresponding path program 1 times [2023-11-22 22:52:15,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:15,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252007554] [2023-11-22 22:52:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:15,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-22 22:52:15,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:15,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252007554] [2023-11-22 22:52:15,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252007554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:15,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:15,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:52:15,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781106239] [2023-11-22 22:52:15,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:15,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:52:15,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:15,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:52:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:15,606 INFO L87 Difference]: Start difference. First operand 240 states and 360 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:15,623 INFO L93 Difference]: Finished difference Result 423 states and 631 transitions. [2023-11-22 22:52:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:52:15,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-22 22:52:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:15,624 INFO L225 Difference]: With dead ends: 423 [2023-11-22 22:52:15,625 INFO L226 Difference]: Without dead ends: 224 [2023-11-22 22:52:15,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:15,626 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 28 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:15,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 209 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:15,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-22 22:52:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2023-11-22 22:52:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.4615384615384615) internal successors, (323), 221 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 323 transitions. [2023-11-22 22:52:15,632 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 323 transitions. Word has length 36 [2023-11-22 22:52:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:15,632 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 323 transitions. [2023-11-22 22:52:15,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 323 transitions. [2023-11-22 22:52:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-22 22:52:15,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:15,635 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2023-11-22 22:52:15,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 22:52:15,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:15,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash -322356712, now seen corresponding path program 1 times [2023-11-22 22:52:15,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:15,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344272617] [2023-11-22 22:52:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:15,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 22:52:15,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344272617] [2023-11-22 22:52:15,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344272617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:15,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:15,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:52:15,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062886870] [2023-11-22 22:52:15,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:15,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:52:15,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:15,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:52:15,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:15,670 INFO L87 Difference]: Start difference. First operand 222 states and 323 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:15,686 INFO L93 Difference]: Finished difference Result 304 states and 441 transitions. [2023-11-22 22:52:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:52:15,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 45 [2023-11-22 22:52:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:15,687 INFO L225 Difference]: With dead ends: 304 [2023-11-22 22:52:15,687 INFO L226 Difference]: Without dead ends: 142 [2023-11-22 22:52:15,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:52:15,688 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 27 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:15,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 181 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:15,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-22 22:52:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-11-22 22:52:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4244604316546763) internal successors, (198), 139 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 198 transitions. [2023-11-22 22:52:15,690 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 198 transitions. Word has length 45 [2023-11-22 22:52:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:15,691 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 198 transitions. [2023-11-22 22:52:15,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:15,691 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 198 transitions. [2023-11-22 22:52:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-22 22:52:15,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:15,691 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2023-11-22 22:52:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 22:52:15,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:15,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1938047041, now seen corresponding path program 1 times [2023-11-22 22:52:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819886782] [2023-11-22 22:52:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 22:52:15,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:15,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819886782] [2023-11-22 22:52:15,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819886782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:15,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205361857] [2023-11-22 22:52:15,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:15,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:15,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:15,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:15,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 22:52:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:15,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-22 22:52:15,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 22:52:16,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:52:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-22 22:52:16,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205361857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:52:16,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:52:16,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 11 [2023-11-22 22:52:16,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612043547] [2023-11-22 22:52:16,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:52:16,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 22:52:16,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:16,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 22:52:16,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:52:16,078 INFO L87 Difference]: Start difference. First operand 140 states and 198 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:16,210 INFO L93 Difference]: Finished difference Result 190 states and 263 transitions. [2023-11-22 22:52:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:52:16,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 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 46 [2023-11-22 22:52:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:16,211 INFO L225 Difference]: With dead ends: 190 [2023-11-22 22:52:16,211 INFO L226 Difference]: Without dead ends: 182 [2023-11-22 22:52:16,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:52:16,212 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 331 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:16,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 530 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-22 22:52:16,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2023-11-22 22:52:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4074074074074074) internal successors, (190), 135 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 190 transitions. [2023-11-22 22:52:16,216 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 190 transitions. Word has length 46 [2023-11-22 22:52:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:16,216 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 190 transitions. [2023-11-22 22:52:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 190 transitions. [2023-11-22 22:52:16,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-22 22:52:16,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:16,217 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2023-11-22 22:52:16,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:16,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:16,430 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:16,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1407112541, now seen corresponding path program 1 times [2023-11-22 22:52:16,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:16,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093289764] [2023-11-22 22:52:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:16,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093289764] [2023-11-22 22:52:16,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093289764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021235325] [2023-11-22 22:52:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:16,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:16,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:16,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:16,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 22:52:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:16,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-22 22:52:16,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:16,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:52:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:17,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021235325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:52:17,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:52:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-22 22:52:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153227573] [2023-11-22 22:52:17,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:52:17,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-22 22:52:17,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-22 22:52:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-22 22:52:17,144 INFO L87 Difference]: Start difference. First operand 136 states and 190 transitions. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:17,262 INFO L93 Difference]: Finished difference Result 163 states and 224 transitions. [2023-11-22 22:52:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 22:52:17,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 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 22:52:17,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:17,263 INFO L225 Difference]: With dead ends: 163 [2023-11-22 22:52:17,263 INFO L226 Difference]: Without dead ends: 161 [2023-11-22 22:52:17,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-22 22:52:17,264 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 165 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:17,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 978 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-22 22:52:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 136. [2023-11-22 22:52:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.3925925925925926) internal successors, (188), 135 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 188 transitions. [2023-11-22 22:52:17,268 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 188 transitions. Word has length 50 [2023-11-22 22:52:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:17,268 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 188 transitions. [2023-11-22 22:52:17,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 188 transitions. [2023-11-22 22:52:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-22 22:52:17,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:17,269 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 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] [2023-11-22 22:52:17,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:17,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:17,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:17,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:17,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1023201670, now seen corresponding path program 1 times [2023-11-22 22:52:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:17,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900290337] [2023-11-22 22:52:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:17,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:17,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:17,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900290337] [2023-11-22 22:52:17,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900290337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:17,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176333669] [2023-11-22 22:52:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:17,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:17,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:17,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:17,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 22:52:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:18,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-22 22:52:18,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:18,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:52:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:52:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176333669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:52:18,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:52:18,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-11-22 22:52:18,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658601892] [2023-11-22 22:52:18,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:52:18,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-22 22:52:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:18,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-22 22:52:18,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:52:18,435 INFO L87 Difference]: Start difference. First operand 136 states and 188 transitions. Second operand has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:18,771 INFO L93 Difference]: Finished difference Result 260 states and 359 transitions. [2023-11-22 22:52:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-22 22:52:18,772 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-22 22:52:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:18,772 INFO L225 Difference]: With dead ends: 260 [2023-11-22 22:52:18,772 INFO L226 Difference]: Without dead ends: 0 [2023-11-22 22:52:18,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2023-11-22 22:52:18,773 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 372 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:18,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1121 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:18,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-22 22:52:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-22 22:52:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-22 22:52:18,774 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2023-11-22 22:52:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:18,774 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-22 22:52:18,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:52:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-22 22:52:18,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-22 22:52:18,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-22 22:52:18,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:19,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 22:52:19,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-22 22:52:19,058 INFO L899 garLoopResultBuilder]: For program point L432(lines 432 434) no Hoare annotation was computed. [2023-11-22 22:52:19,059 INFO L899 garLoopResultBuilder]: For program point L300(lines 300 302) no Hoare annotation was computed. [2023-11-22 22:52:19,059 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 170) no Hoare annotation was computed. [2023-11-22 22:52:19,059 INFO L899 garLoopResultBuilder]: For program point L532(lines 532 534) no Hoare annotation was computed. [2023-11-22 22:52:19,059 INFO L899 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2023-11-22 22:52:19,059 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2023-11-22 22:52:19,059 INFO L899 garLoopResultBuilder]: For program point L500(lines 500 502) no Hoare annotation was computed. [2023-11-22 22:52:19,059 INFO L899 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2023-11-22 22:52:19,059 INFO L899 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 60) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 57) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 157) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 257) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 125) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 55) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L342(lines 342 357) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 225) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 155) no Hoare annotation was computed. [2023-11-22 22:52:19,060 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 93) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 457) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 325) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 255) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 193) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 123) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L542(lines 542 557) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L410(lines 410 425) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L344(lines 344 355) no Hoare annotation was computed. [2023-11-22 22:52:19,061 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 293) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 223) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L80(lines 80 91) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L510(lines 510 525) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L444(lines 444 455) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 393) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L312(lines 312 323) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 191) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2023-11-22 22:52:19,062 INFO L899 garLoopResultBuilder]: For program point L544(lines 544 555) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L478(lines 478 493) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L544-2(lines 26 563) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L280(lines 280 291) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L148(lines 148 150) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 568) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L512(lines 512 523) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L380(lines 380 391) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 250) no Hoare annotation was computed. [2023-11-22 22:52:19,063 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 118) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L480(lines 480 491) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L216(lines 216 218) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 86) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L548(lines 548 550) no Hoare annotation was computed. [2023-11-22 22:52:19,064 INFO L899 garLoopResultBuilder]: For program point L416(lines 416 418) no Hoare annotation was computed. [2023-11-22 22:52:19,065 INFO L899 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2023-11-22 22:52:19,065 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 518) no Hoare annotation was computed. [2023-11-22 22:52:19,065 INFO L899 garLoopResultBuilder]: For program point L384(lines 384 386) no Hoare annotation was computed. [2023-11-22 22:52:19,065 INFO L899 garLoopResultBuilder]: For program point L484(lines 484 486) no Hoare annotation was computed. [2023-11-22 22:52:19,065 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-22 22:52:19,066 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0))) (or (and .cse0 (= 1 (mod (+ |ULTIMATE.start_main_~this_expect~0#1| 1) 2)) (<= 5 |ULTIMATE.start_main_~q~0#1|)) (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) .cse0 (= |ULTIMATE.start_main_~q~0#1| 0)))) [2023-11-22 22:52:19,066 INFO L899 garLoopResultBuilder]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2023-11-22 22:52:19,066 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 141) no Hoare annotation was computed. [2023-11-22 22:52:19,066 INFO L899 garLoopResultBuilder]: For program point L226(lines 226 241) no Hoare annotation was computed. [2023-11-22 22:52:19,066 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 109) no Hoare annotation was computed. [2023-11-22 22:52:19,066 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 160) no Hoare annotation was computed. [2023-11-22 22:52:19,066 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 341) no Hoare annotation was computed. [2023-11-22 22:52:19,066 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 209) no Hoare annotation was computed. [2023-11-22 22:52:19,066 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 260) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L128(lines 128 139) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 77) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L426(lines 426 441) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 309) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 360) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 239) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 177) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L96(lines 96 107) no Hoare annotation was computed. [2023-11-22 22:52:19,067 INFO L899 garLoopResultBuilder]: For program point L526(lines 526 541) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L394(lines 394 409) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L361(lines 361 460) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 339) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 277) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 207) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 75) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L494(lines 494 509) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L461(lines 461 560) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L428(lines 428 439) no Hoare annotation was computed. [2023-11-22 22:52:19,068 INFO L899 garLoopResultBuilder]: For program point L362(lines 362 377) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 307) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 175) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 539) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point L462(lines 462 477) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point L396(lines 396 407) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point L264(lines 264 275) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point L132(lines 132 134) no Hoare annotation was computed. [2023-11-22 22:52:19,069 INFO L899 garLoopResultBuilder]: For program point L496(lines 496 507) no Hoare annotation was computed. [2023-11-22 22:52:19,070 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2023-11-22 22:52:19,070 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2023-11-22 22:52:19,070 INFO L899 garLoopResultBuilder]: For program point L100(lines 100 102) no Hoare annotation was computed. [2023-11-22 22:52:19,070 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 16 568) no Hoare annotation was computed. [2023-11-22 22:52:19,070 INFO L899 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2023-11-22 22:52:19,070 INFO L899 garLoopResultBuilder]: For program point L332(lines 332 334) no Hoare annotation was computed. [2023-11-22 22:52:19,070 INFO L899 garLoopResultBuilder]: For program point L200(lines 200 202) no Hoare annotation was computed. [2023-11-22 22:52:19,070 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2023-11-22 22:52:19,073 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:19,075 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 22:52:19,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:52:19 BoogieIcfgContainer [2023-11-22 22:52:19,083 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 22:52:19,084 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 22:52:19,084 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 22:52:19,084 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 22:52:19,084 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:52:12" (3/4) ... [2023-11-22 22:52:19,086 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-22 22:52:19,094 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-22 22:52:19,094 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-22 22:52:19,095 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-22 22:52:19,095 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-22 22:52:19,183 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 22:52:19,183 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-22 22:52:19,184 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 22:52:19,184 INFO L158 Benchmark]: Toolchain (without parser) took 7908.66ms. Allocated memory was 176.2MB in the beginning and 339.7MB in the end (delta: 163.6MB). Free memory was 100.9MB in the beginning and 235.4MB in the end (delta: -134.5MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2023-11-22 22:52:19,184 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 22:52:19,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.13ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 100.7MB in the beginning and 227.6MB in the end (delta: -126.9MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2023-11-22 22:52:19,185 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.03ms. Allocated memory is still 260.0MB. Free memory was 227.6MB in the beginning and 223.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 22:52:19,185 INFO L158 Benchmark]: Boogie Preprocessor took 68.63ms. Allocated memory is still 260.0MB. Free memory was 223.4MB in the beginning and 220.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 22:52:19,185 INFO L158 Benchmark]: RCFGBuilder took 639.35ms. Allocated memory is still 260.0MB. Free memory was 220.2MB in the beginning and 175.1MB in the end (delta: 45.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-22 22:52:19,185 INFO L158 Benchmark]: TraceAbstraction took 6609.48ms. Allocated memory was 260.0MB in the beginning and 339.7MB in the end (delta: 79.7MB). Free memory was 174.1MB in the beginning and 245.9MB in the end (delta: -71.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2023-11-22 22:52:19,186 INFO L158 Benchmark]: Witness Printer took 100.06ms. Allocated memory is still 339.7MB. Free memory was 245.9MB in the beginning and 235.4MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-22 22:52:19,187 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 423.13ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 100.7MB in the beginning and 227.6MB in the end (delta: -126.9MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.03ms. Allocated memory is still 260.0MB. Free memory was 227.6MB in the beginning and 223.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.63ms. Allocated memory is still 260.0MB. Free memory was 223.4MB in the beginning and 220.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 639.35ms. Allocated memory is still 260.0MB. Free memory was 220.2MB in the beginning and 175.1MB in the end (delta: 45.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6609.48ms. Allocated memory was 260.0MB in the beginning and 339.7MB in the end (delta: 79.7MB). Free memory was 174.1MB in the beginning and 245.9MB in the end (delta: -71.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Witness Printer took 100.06ms. Allocated memory is still 339.7MB. Free memory was 245.9MB in the beginning and 235.4MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 567]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.5s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2532 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2532 mSDsluCounter, 6277 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4266 mSDsCounter, 237 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 914 IncrementalHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 237 mSolverCounterUnsat, 2011 mSDtfsCounter, 914 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=347occurred in iteration=6, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 174 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 25 HoareAnnotationTreeSize, 1 FomulaSimplifications, 195 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 91 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 576 NumberOfCodeBlocks, 576 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 728 ConstructedInterpolants, 0 QuantifiedInterpolants, 5958 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1099 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 22 InterpolantComputations, 9 PerfectInterpolantSequences, 227/467 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((this_buffer_empty == 0) && (1 == ((this_expect + 1) % 2))) && (5 <= q)) || (((this_expect == 0) && (this_buffer_empty == 0)) && (q == 0))) RESULT: Ultimate proved your program to be correct! [2023-11-22 22:52:19,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE