./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/loop-simple/nested_3.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/loop-simple/nested_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 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:43:39,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:43:39,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 22:43:39,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:43:39,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:43:39,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:43:39,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:43:39,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:43:39,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:43:39,205 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:43:39,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:43:39,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:43:39,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:43:39,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:43:39,208 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:43:39,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:43:39,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:43:39,209 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 22:43:39,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:43:39,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 22:43:39,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:43:39,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:43:39,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:43:39,211 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:43:39,211 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 22:43:39,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:43:39,211 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:43:39,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:43:39,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:43:39,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:43:39,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:43:39,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:43:39,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:43:39,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:43:39,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:43:39,214 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:43:39,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:43:39,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:43:39,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:43:39,215 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:43:39,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:43:39,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:43:39,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 22:43:39,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:43:39,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:43:39,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:43:39,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:43:39,472 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:43:39,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_3.c [2023-11-22 22:43:40,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:43:40,673 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:43:40,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c [2023-11-22 22:43:40,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac4625b0f/d0e83f599b4d494fa9aacb387bd82226/FLAG3e7a2fd01 [2023-11-22 22:43:40,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac4625b0f/d0e83f599b4d494fa9aacb387bd82226 [2023-11-22 22:43:40,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:43:40,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:43:40,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:43:40,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:43:40,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:43:40,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2205ca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40, skipping insertion in model container [2023-11-22 22:43:40,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,708 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:43:40,798 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c[784,797] [2023-11-22 22:43:40,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:43:40,811 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:43:40,820 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c[784,797] [2023-11-22 22:43:40,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:43:40,831 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:43:40,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40 WrapperNode [2023-11-22 22:43:40,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:43:40,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:43:40,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:43:40,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:43:40,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,854 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2023-11-22 22:43:40,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:43:40,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:43:40,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:43:40,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:43:40,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,863 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,873 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-22 22:43:40,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:43:40,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:43:40,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:43:40,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:43:40,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (1/1) ... [2023-11-22 22:43:40,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:43:40,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:40,912 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 22:43:40,938 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 22:43:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:43:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:43:40,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:43:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 22:43:41,011 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:43:41,013 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:43:41,101 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:43:41,117 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:43:41,117 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-22 22:43:41,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:43:41 BoogieIcfgContainer [2023-11-22 22:43:41,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:43:41,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:43:41,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:43:41,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:43:41,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:43:40" (1/3) ... [2023-11-22 22:43:41,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739617fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:43:41, skipping insertion in model container [2023-11-22 22:43:41,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:43:40" (2/3) ... [2023-11-22 22:43:41,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739617fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:43:41, skipping insertion in model container [2023-11-22 22:43:41,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:43:41" (3/3) ... [2023-11-22 22:43:41,124 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_3.c [2023-11-22 22:43:41,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:43:41,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:43:41,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:43:41,176 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;@5ca426b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:43:41,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:43:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-22 22:43:41,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:41,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-22 22:43:41,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:41,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2570098, now seen corresponding path program 1 times [2023-11-22 22:43:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:41,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054989406] [2023-11-22 22:43:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:41,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:41,272 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 22:43:41,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054989406] [2023-11-22 22:43:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054989406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:41,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:41,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 22:43:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288328291] [2023-11-22 22:43:41,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:41,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 22:43:41,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 22:43:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 22:43:41,299 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:41,322 INFO L93 Difference]: Finished difference Result 21 states and 33 transitions. [2023-11-22 22:43:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 22:43:41,324 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-22 22:43:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:41,329 INFO L225 Difference]: With dead ends: 21 [2023-11-22 22:43:41,329 INFO L226 Difference]: Without dead ends: 9 [2023-11-22 22:43:41,331 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 22:43:41,336 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:41,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-22 22:43:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-22 22:43:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-11-22 22:43:41,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 4 [2023-11-22 22:43:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:41,359 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-22 22:43:41,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-11-22 22:43:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-22 22:43:41,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:41,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-22 22:43:41,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:43:41,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:41,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:41,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2541268, now seen corresponding path program 1 times [2023-11-22 22:43:41,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:41,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74572197] [2023-11-22 22:43:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:41,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:41,441 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 22:43:41,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:41,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74572197] [2023-11-22 22:43:41,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74572197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:41,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:41,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 22:43:41,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461490466] [2023-11-22 22:43:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:43:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:41,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:43:41,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:43:41,447 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:41,467 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2023-11-22 22:43:41,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:43:41,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-22 22:43:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:41,484 INFO L225 Difference]: With dead ends: 17 [2023-11-22 22:43:41,484 INFO L226 Difference]: Without dead ends: 14 [2023-11-22 22:43:41,485 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 22:43:41,486 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:41,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:41,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-22 22:43:41,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2023-11-22 22:43:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-22 22:43:41,489 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 4 [2023-11-22 22:43:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:41,489 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-22 22:43:41,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-22 22:43:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-22 22:43:41,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:41,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:43:41,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 22:43:41,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:41,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1569449088, now seen corresponding path program 1 times [2023-11-22 22:43:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554641033] [2023-11-22 22:43:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:43:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:41,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554641033] [2023-11-22 22:43:41,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554641033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:41,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:41,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:43:41,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071644636] [2023-11-22 22:43:41,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:41,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:43:41,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:43:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:43:41,527 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:41,548 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2023-11-22 22:43:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:43:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-11-22 22:43:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:41,549 INFO L225 Difference]: With dead ends: 21 [2023-11-22 22:43:41,549 INFO L226 Difference]: Without dead ends: 13 [2023-11-22 22:43:41,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 22:43:41,550 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:41,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:41,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-22 22:43:41,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2023-11-22 22:43:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-11-22 22:43:41,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2023-11-22 22:43:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:41,558 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-11-22 22:43:41,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-11-22 22:43:41,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-22 22:43:41,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:41,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:43:41,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 22:43:41,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:41,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1644603312, now seen corresponding path program 1 times [2023-11-22 22:43:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372218356] [2023-11-22 22:43:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:41,607 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 22:43:41,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:41,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372218356] [2023-11-22 22:43:41,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372218356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:41,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:41,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:43:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994493526] [2023-11-22 22:43:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:41,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:43:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:43:41,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:43:41,609 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:41,617 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-11-22 22:43:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:43:41,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-22 22:43:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:41,618 INFO L225 Difference]: With dead ends: 21 [2023-11-22 22:43:41,618 INFO L226 Difference]: Without dead ends: 12 [2023-11-22 22:43:41,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 22:43:41,619 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:41,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-22 22:43:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-22 22:43:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 22:43:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-22 22:43:41,622 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2023-11-22 22:43:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:41,622 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-22 22:43:41,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-22 22:43:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-22 22:43:41,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:41,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:43:41,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 22:43:41,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:41,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1367520426, now seen corresponding path program 1 times [2023-11-22 22:43:41,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:41,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312528454] [2023-11-22 22:43:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:43:41,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:41,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312528454] [2023-11-22 22:43:41,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312528454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:41,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495567896] [2023-11-22 22:43:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:41,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:41,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:41,686 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 22:43:41,692 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 22:43:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:41,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:43:41,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:43:41,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:43:41,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495567896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:41,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:41,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-22 22:43:41,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647958729] [2023-11-22 22:43:41,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:41,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:43:41,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:41,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:43:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:41,786 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:41,799 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-11-22 22:43:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:43:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 11 [2023-11-22 22:43:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:41,800 INFO L225 Difference]: With dead ends: 25 [2023-11-22 22:43:41,800 INFO L226 Difference]: Without dead ends: 15 [2023-11-22 22:43:41,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:41,801 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:41,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-22 22:43:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-22 22:43:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-22 22:43:41,805 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2023-11-22 22:43:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:41,805 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-22 22:43:41,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-22 22:43:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-22 22:43:41,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:41,806 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:43:41,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 22:43:42,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:42,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:42,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 476406064, now seen corresponding path program 2 times [2023-11-22 22:43:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:42,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110455321] [2023-11-22 22:43:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:42,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 22:43:42,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:42,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110455321] [2023-11-22 22:43:42,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110455321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:42,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255202451] [2023-11-22 22:43:42,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:43:42,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:42,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:42,092 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 22:43:42,096 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 22:43:42,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:43:42,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:43:42,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:43:42,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:43:42,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:43:42,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255202451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:42,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:42,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2023-11-22 22:43:42,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911563845] [2023-11-22 22:43:42,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:42,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 22:43:42,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 22:43:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:43:42,278 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:42,413 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2023-11-22 22:43:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-22 22:43:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 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 22:43:42,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:42,414 INFO L225 Difference]: With dead ends: 47 [2023-11-22 22:43:42,414 INFO L226 Difference]: Without dead ends: 34 [2023-11-22 22:43:42,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2023-11-22 22:43:42,419 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:42,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:42,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-22 22:43:42,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2023-11-22 22:43:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-11-22 22:43:42,431 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2023-11-22 22:43:42,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:42,432 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-11-22 22:43:42,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-11-22 22:43:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-22 22:43:42,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:42,434 INFO L195 NwaCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:43:42,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-22 22:43:42,645 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,SelfDestructingSolverStorable5 [2023-11-22 22:43:42,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:42,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:42,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2131043968, now seen corresponding path program 3 times [2023-11-22 22:43:42,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:42,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274353978] [2023-11-22 22:43:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:42,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-22 22:43:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274353978] [2023-11-22 22:43:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274353978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094843403] [2023-11-22 22:43:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 22:43:42,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:42,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:42,739 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 22:43:42,758 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 22:43:42,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 22:43:42,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:43:42,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:43:42,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-22 22:43:42,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-22 22:43:42,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094843403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:42,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:42,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-22 22:43:42,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678313446] [2023-11-22 22:43:42,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:42,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:43:42,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:43:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:42,851 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:42,886 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2023-11-22 22:43:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:43:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 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 25 [2023-11-22 22:43:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:42,889 INFO L225 Difference]: With dead ends: 92 [2023-11-22 22:43:42,889 INFO L226 Difference]: Without dead ends: 89 [2023-11-22 22:43:42,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:42,891 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:42,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-22 22:43:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-22 22:43:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 88 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:42,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2023-11-22 22:43:42,916 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 25 [2023-11-22 22:43:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:42,916 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2023-11-22 22:43:42,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2023-11-22 22:43:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-22 22:43:42,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:42,920 INFO L195 NwaCegarLoop]: trace histogram [48, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1] [2023-11-22 22:43:42,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-22 22:43:43,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:43,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:43,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:43,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1621905964, now seen corresponding path program 4 times [2023-11-22 22:43:43,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:43,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761321714] [2023-11-22 22:43:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:43,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 631 proven. 53 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2023-11-22 22:43:43,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:43,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761321714] [2023-11-22 22:43:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761321714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:43,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404194139] [2023-11-22 22:43:43,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 22:43:43,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:43,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:43,260 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 22:43:43,288 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 22:43:43,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 22:43:43,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:43:43,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 22:43:43,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 631 proven. 53 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2023-11-22 22:43:43,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 631 proven. 53 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2023-11-22 22:43:43,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404194139] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:43,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-22 22:43:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375519727] [2023-11-22 22:43:43,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:43,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:43:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:43:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:43:43,427 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:43,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:43,481 INFO L93 Difference]: Finished difference Result 301 states and 354 transitions. [2023-11-22 22:43:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:43:43,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-22 22:43:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:43,484 INFO L225 Difference]: With dead ends: 301 [2023-11-22 22:43:43,485 INFO L226 Difference]: Without dead ends: 233 [2023-11-22 22:43:43,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:43:43,486 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:43,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-22 22:43:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2023-11-22 22:43:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.125) internal successors, (261), 232 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 261 transitions. [2023-11-22 22:43:43,511 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 261 transitions. Word has length 88 [2023-11-22 22:43:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:43,511 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 261 transitions. [2023-11-22 22:43:43,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:43,511 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 261 transitions. [2023-11-22 22:43:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-22 22:43:43,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:43,514 INFO L195 NwaCegarLoop]: trace histogram [144, 24, 24, 24, 4, 4, 4, 1, 1, 1, 1] [2023-11-22 22:43:43,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-22 22:43:43,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:43,725 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:43,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:43,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1011087828, now seen corresponding path program 5 times [2023-11-22 22:43:43,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:43,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416503304] [2023-11-22 22:43:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14698 backedges. 0 proven. 11110 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2023-11-22 22:43:44,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:44,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416503304] [2023-11-22 22:43:44,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416503304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:44,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478473691] [2023-11-22 22:43:44,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 22:43:44,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:44,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:44,033 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 22:43:44,066 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 22:43:44,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2023-11-22 22:43:44,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:43:44,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:43:44,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 14698 backedges. 0 proven. 11110 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2023-11-22 22:43:44,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14698 backedges. 0 proven. 11110 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2023-11-22 22:43:44,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478473691] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:44,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:44,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-11-22 22:43:44,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319585925] [2023-11-22 22:43:44,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:44,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:43:44,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:43:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:43:44,645 INFO L87 Difference]: Start difference. First operand 233 states and 261 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:44,693 INFO L93 Difference]: Finished difference Result 350 states and 393 transitions. [2023-11-22 22:43:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:43:44,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 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 232 [2023-11-22 22:43:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:44,697 INFO L225 Difference]: With dead ends: 350 [2023-11-22 22:43:44,698 INFO L226 Difference]: Without dead ends: 347 [2023-11-22 22:43:44,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 457 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:43:44,700 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:44,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:43:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-22 22:43:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-22 22:43:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.1242774566473988) internal successors, (389), 346 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 389 transitions. [2023-11-22 22:43:44,727 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 389 transitions. Word has length 232 [2023-11-22 22:43:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:44,728 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 389 transitions. [2023-11-22 22:43:44,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 389 transitions. [2023-11-22 22:43:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-11-22 22:43:44,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:44,731 INFO L195 NwaCegarLoop]: trace histogram [216, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1] [2023-11-22 22:43:44,746 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 22:43:44,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:44,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:44,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:44,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1991736492, now seen corresponding path program 6 times [2023-11-22 22:43:44,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:44,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291583679] [2023-11-22 22:43:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:44,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 28563 refuted. 0 times theorem prover too weak. 4590 trivial. 0 not checked. [2023-11-22 22:43:46,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:46,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291583679] [2023-11-22 22:43:46,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291583679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:46,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965141229] [2023-11-22 22:43:46,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-22 22:43:46,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:46,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:46,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:43:46,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 22:43:46,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 59 check-sat command(s) [2023-11-22 22:43:46,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:43:46,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-22 22:43:46,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 9256 proven. 792 refuted. 0 times theorem prover too weak. 23105 trivial. 0 not checked. [2023-11-22 22:43:46,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 9256 proven. 792 refuted. 0 times theorem prover too weak. 23105 trivial. 0 not checked. [2023-11-22 22:43:47,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965141229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:47,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:47,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19, 19] total 48 [2023-11-22 22:43:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9791479] [2023-11-22 22:43:47,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-22 22:43:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-22 22:43:47,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1756, Unknown=0, NotChecked=0, Total=2256 [2023-11-22 22:43:47,409 INFO L87 Difference]: Start difference. First operand 347 states and 389 transitions. Second operand has 48 states, 48 states have (on average 2.5833333333333335) internal successors, (124), 48 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:50,803 INFO L93 Difference]: Finished difference Result 683 states and 768 transitions. [2023-11-22 22:43:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2023-11-22 22:43:50,804 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.5833333333333335) internal successors, (124), 48 states have internal predecessors, (124), 0 states have call successors, (0), 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 346 [2023-11-22 22:43:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:50,805 INFO L225 Difference]: With dead ends: 683 [2023-11-22 22:43:50,805 INFO L226 Difference]: Without dead ends: 0 [2023-11-22 22:43:50,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34778 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=10777, Invalid=80729, Unknown=0, NotChecked=0, Total=91506 [2023-11-22 22:43:50,840 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:50,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:43:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-22 22:43:50,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-22 22:43:50,841 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 22:43:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-22 22:43:50,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 346 [2023-11-22 22:43:50,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:50,841 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-22 22:43:50,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.5833333333333335) internal successors, (124), 48 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:43:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-22 22:43:50,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-22 22:43:50,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-22 22:43:50,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-22 22:43:51,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:51,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-22 22:43:54,411 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-22 22:43:54,412 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-22 22:43:54,412 INFO L895 garLoopResultBuilder]: At program point L23-3(lines 23 25) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 5)) (.cse1 (<= |ULTIMATE.start_main_~b~0#1| 5))) (or (and .cse0 .cse1 (= 2 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1) (and .cse0 .cse1 (= 3 |ULTIMATE.start_main_~c~0#1|)) (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 .cse1) (and .cse0 .cse1 (= 6 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 4)) (and (= |ULTIMATE.start_main_~c~0#1| 1) .cse0 .cse1))) [2023-11-22 22:43:54,412 INFO L899 garLoopResultBuilder]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2023-11-22 22:43:54,412 INFO L895 garLoopResultBuilder]: At program point L21-3(lines 21 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 6) (= 6 |ULTIMATE.start_main_~b~0#1|) (= 6 |ULTIMATE.start_main_~c~0#1|)) [2023-11-22 22:43:54,412 INFO L899 garLoopResultBuilder]: For program point L21-4(lines 15 32) no Hoare annotation was computed. [2023-11-22 22:43:54,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-22 22:43:54,412 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2023-11-22 22:43:54,413 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2023-11-22 22:43:54,413 INFO L899 garLoopResultBuilder]: For program point L22-2(lines 22 26) no Hoare annotation was computed. [2023-11-22 22:43:54,413 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 26) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 5) (<= |ULTIMATE.start_main_~b~0#1| 6) (= 6 |ULTIMATE.start_main_~c~0#1|)) [2023-11-22 22:43:54,415 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2023-11-22 22:43:54,416 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 22:43:54,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:43:54 BoogieIcfgContainer [2023-11-22 22:43:54,432 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 22:43:54,432 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 22:43:54,432 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 22:43:54,433 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 22:43:54,433 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:43:41" (3/4) ... [2023-11-22 22:43:54,434 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-22 22:43:54,438 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-22 22:43:54,439 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-22 22:43:54,439 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-22 22:43:54,439 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-22 22:43:54,496 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 22:43:54,497 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-22 22:43:54,497 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 22:43:54,497 INFO L158 Benchmark]: Toolchain (without parser) took 13806.84ms. Allocated memory was 176.2MB in the beginning and 457.2MB in the end (delta: 281.0MB). Free memory was 146.0MB in the beginning and 175.6MB in the end (delta: -29.6MB). Peak memory consumption was 251.4MB. Max. memory is 16.1GB. [2023-11-22 22:43:54,497 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 22:43:54,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 140.66ms. Allocated memory is still 176.2MB. Free memory was 145.6MB in the beginning and 135.7MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-22 22:43:54,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.68ms. Allocated memory is still 176.2MB. Free memory was 135.7MB in the beginning and 134.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 22:43:54,498 INFO L158 Benchmark]: Boogie Preprocessor took 31.61ms. Allocated memory is still 176.2MB. Free memory was 134.2MB in the beginning and 132.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 22:43:54,498 INFO L158 Benchmark]: RCFGBuilder took 231.30ms. Allocated memory is still 176.2MB. Free memory was 132.5MB in the beginning and 122.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-22 22:43:54,499 INFO L158 Benchmark]: TraceAbstraction took 13312.39ms. Allocated memory was 176.2MB in the beginning and 457.2MB in the end (delta: 281.0MB). Free memory was 122.0MB in the beginning and 179.8MB in the end (delta: -57.8MB). Peak memory consumption was 250.3MB. Max. memory is 16.1GB. [2023-11-22 22:43:54,499 INFO L158 Benchmark]: Witness Printer took 64.54ms. Allocated memory is still 457.2MB. Free memory was 179.8MB in the beginning and 175.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 22:43:54,500 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 140.66ms. Allocated memory is still 176.2MB. Free memory was 145.6MB in the beginning and 135.7MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.68ms. Allocated memory is still 176.2MB. Free memory was 135.7MB in the beginning and 134.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.61ms. Allocated memory is still 176.2MB. Free memory was 134.2MB in the beginning and 132.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.30ms. Allocated memory is still 176.2MB. Free memory was 132.5MB in the beginning and 122.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13312.39ms. Allocated memory was 176.2MB in the beginning and 457.2MB in the end (delta: 281.0MB). Free memory was 122.0MB in the beginning and 179.8MB in the end (delta: -57.8MB). Peak memory consumption was 250.3MB. Max. memory is 16.1GB. * Witness Printer took 64.54ms. Allocated memory is still 457.2MB. Free memory was 179.8MB in the beginning and 175.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 29]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 10, TraceHistogramMax: 216, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 165 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 454 IncrementalHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 70 mSDtfsCounter, 454 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1747 GetRequests, 1391 SyntacticMatches, 8 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34905 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=347occurred in iteration=9, InterpolantAutomatonStates: 329, 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, 10 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 304 NumberOfFragments, 91 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3783 FormulaSimplificationTreeSizeReduction, 1.8s HoareSimplificationTime, 3 FomulaSimplificationsInter, 2922 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1457 NumberOfCodeBlocks, 1291 NumberOfCodeBlocksAsserted, 154 NumberOfCheckSat, 2151 ConstructedInterpolants, 0 QuantifiedInterpolants, 6061 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1532 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 85176/148839 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: 21]: Loop Invariant Derived loop invariant: (((a <= 6) && (6 == b)) && (6 == c)) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((((((a <= 5) && (b <= 5)) && (2 == c)) || (((a <= 5) && (5 == c)) && (b <= 5))) || (((a <= 5) && (b <= 5)) && (3 == c))) || (((c == 0) && (a <= 5)) && (b <= 5))) || (((a <= 5) && (b <= 5)) && (6 == c))) || (((a <= 5) && (b <= 5)) && (c == 4))) || (((c == 1) && (a <= 5)) && (b <= 5))) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((a <= 5) && (b <= 6)) && (6 == c)) RESULT: Ultimate proved your program to be correct! [2023-11-22 22:43:54,519 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