./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i -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 9957a8257e625ece47db9a92e288c6545c023c8bdaf68d0d314c8d86ce47979a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:39:06,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:39:06,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:39:06,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:39:06,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:39:06,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:39:06,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:39:06,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:39:06,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:39:06,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:39:06,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:39:06,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:39:06,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:39:06,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:39:06,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:39:06,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:39:06,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:39:06,988 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:39:06,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:39:06,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:39:06,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:39:06,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:39:06,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:39:06,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:39:06,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:39:06,989 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:39:06,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:39:06,989 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:39:06,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:39:06,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:39:06,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:39:06,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:39:06,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:39:06,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:39:06,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:39:06,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:39:06,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:39:06,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:39:06,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:39:06,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:39:06,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:39:06,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:39:06,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9957a8257e625ece47db9a92e288c6545c023c8bdaf68d0d314c8d86ce47979a [2024-11-21 20:39:07,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:39:07,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:39:07,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:39:07,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:39:07,194 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:39:07,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i [2024-11-21 20:39:08,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:39:08,533 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:39:08,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i [2024-11-21 20:39:08,539 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70c39d9a0/1d64fa37dff947c4b17a2cf663d85dc5/FLAG19f35ef6f [2024-11-21 20:39:08,549 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70c39d9a0/1d64fa37dff947c4b17a2cf663d85dc5 [2024-11-21 20:39:08,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:39:08,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:39:08,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:39:08,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:39:08,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:39:08,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de47392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08, skipping insertion in model container [2024-11-21 20:39:08,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,571 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:39:08,705 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i[853,866] [2024-11-21 20:39:08,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:39:08,728 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:39:08,742 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i[853,866] [2024-11-21 20:39:08,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:39:08,763 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:39:08,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08 WrapperNode [2024-11-21 20:39:08,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:39:08,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:39:08,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:39:08,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:39:08,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,788 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-11-21 20:39:08,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:39:08,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:39:08,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:39:08,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:39:08,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,806 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 4, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-21 20:39:08,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:39:08,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:39:08,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:39:08,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:39:08,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (1/1) ... [2024-11-21 20:39:08,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:39:08,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:08,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-21 20:39:08,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-21 20:39:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:39:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:39:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:39:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:39:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:39:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:39:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:39:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:39:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:39:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:39:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:39:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:39:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:39:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:39:08,932 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:39:08,934 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:39:09,029 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-21 20:39:09,030 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:39:09,038 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:39:09,038 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-21 20:39:09,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:39:09 BoogieIcfgContainer [2024-11-21 20:39:09,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:39:09,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:39:09,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:39:09,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:39:09,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:39:08" (1/3) ... [2024-11-21 20:39:09,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d945c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:39:09, skipping insertion in model container [2024-11-21 20:39:09,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:39:08" (2/3) ... [2024-11-21 20:39:09,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d945c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:39:09, skipping insertion in model container [2024-11-21 20:39:09,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:39:09" (3/3) ... [2024-11-21 20:39:09,045 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-1.i [2024-11-21 20:39:09,058 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:39:09,058 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:39:09,098 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:39:09,103 INFO L333 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, 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;@73391ea1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:39:09,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:39:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-21 20:39:09,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:09,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:09,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:09,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash 254868323, now seen corresponding path program 1 times [2024-11-21 20:39:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221401210] [2024-11-21 20:39:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:39:09,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:39:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:39:09,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221401210] [2024-11-21 20:39:09,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221401210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:39:09,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:39:09,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:39:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302181568] [2024-11-21 20:39:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:39:09,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:39:09,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:09,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:39:09,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:39:09,323 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:09,340 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2024-11-21 20:39:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:39:09,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-21 20:39:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:09,347 INFO L225 Difference]: With dead ends: 32 [2024-11-21 20:39:09,347 INFO L226 Difference]: Without dead ends: 14 [2024-11-21 20:39:09,349 INFO L431 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 [2024-11-21 20:39:09,351 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:09,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-21 20:39:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-21 20:39:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2024-11-21 20:39:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-11-21 20:39:09,377 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2024-11-21 20:39:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:09,377 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-11-21 20:39:09,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2024-11-21 20:39:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-21 20:39:09,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:09,378 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:09,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:39:09,378 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:09,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash -743314847, now seen corresponding path program 1 times [2024-11-21 20:39:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:09,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747963845] [2024-11-21 20:39:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:39:09,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:39:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:39:09,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747963845] [2024-11-21 20:39:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747963845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:09,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680497326] [2024-11-21 20:39:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:39:09,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:09,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:09,537 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) [2024-11-21 20:39:09,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:39:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:39:09,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:39:09,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:39:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:39:09,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:39:09,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680497326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:09,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:09,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:39:09,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659110745] [2024-11-21 20:39:09,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:09,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:39:09,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:39:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:39:09,667 INFO L87 Difference]: Start difference. First operand 14 states and 17 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) [2024-11-21 20:39:09,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:09,681 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2024-11-21 20:39:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:39:09,682 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 [2024-11-21 20:39:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:09,683 INFO L225 Difference]: With dead ends: 27 [2024-11-21 20:39:09,683 INFO L226 Difference]: Without dead ends: 17 [2024-11-21 20:39:09,684 INFO L431 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 [2024-11-21 20:39:09,685 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:09,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:09,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-21 20:39:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-21 20:39:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-21 20:39:09,690 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2024-11-21 20:39:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:09,690 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-21 20:39:09,690 INFO L472 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) [2024-11-21 20:39:09,690 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-21 20:39:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-21 20:39:09,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:09,692 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:09,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 20:39:09,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:09,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:09,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1408008124, now seen corresponding path program 2 times [2024-11-21 20:39:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131135647] [2024-11-21 20:39:09,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:39:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:09,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-21 20:39:09,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-21 20:39:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:09,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131135647] [2024-11-21 20:39:09,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131135647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:39:09,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:39:09,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:39:09,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247434360] [2024-11-21 20:39:09,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:39:09,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:39:09,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:09,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:39:09,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:39:09,971 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-21 20:39:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:09,993 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-21 20:39:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:39:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Word has length 14 [2024-11-21 20:39:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:09,994 INFO L225 Difference]: With dead ends: 28 [2024-11-21 20:39:09,994 INFO L226 Difference]: Without dead ends: 20 [2024-11-21 20:39:09,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:39:09,995 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:09,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-21 20:39:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-21 20:39:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-21 20:39:09,999 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2024-11-21 20:39:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:09,999 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-21 20:39:09,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-21 20:39:10,000 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-21 20:39:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-21 20:39:10,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:10,000 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:10,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 20:39:10,000 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:10,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash -506219954, now seen corresponding path program 1 times [2024-11-21 20:39:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286271483] [2024-11-21 20:39:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:39:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:39:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:39:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286271483] [2024-11-21 20:39:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286271483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:10,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910007884] [2024-11-21 20:39:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:39:10,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:10,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:10,147 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) [2024-11-21 20:39:10,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:39:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:39:10,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:39:10,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:39:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:39:10,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:39:10,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910007884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:10,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:10,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-21 20:39:10,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179763247] [2024-11-21 20:39:10,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:10,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 20:39:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:10,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 20:39:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-21 20:39:10,290 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 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) [2024-11-21 20:39:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:10,313 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2024-11-21 20:39:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-21 20:39:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 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 17 [2024-11-21 20:39:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:10,318 INFO L225 Difference]: With dead ends: 39 [2024-11-21 20:39:10,319 INFO L226 Difference]: Without dead ends: 26 [2024-11-21 20:39:10,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-21 20:39:10,321 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:10,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-21 20:39:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-21 20:39:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-21 20:39:10,327 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2024-11-21 20:39:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:10,327 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-21 20:39:10,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 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) [2024-11-21 20:39:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-21 20:39:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-21 20:39:10,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:10,328 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:10,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:39:10,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-21 20:39:10,529 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:10,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:10,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1390008430, now seen corresponding path program 2 times [2024-11-21 20:39:10,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:10,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848521165] [2024-11-21 20:39:10,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:39:10,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:10,560 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:39:10,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:39:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848521165] [2024-11-21 20:39:10,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848521165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702071149] [2024-11-21 20:39:10,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:39:10,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:10,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:10,776 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) [2024-11-21 20:39:10,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:39:10,840 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:39:10,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:10,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 20:39:10,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:39:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:39:10,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:39:11,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702071149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:11,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:11,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-21 20:39:11,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118950543] [2024-11-21 20:39:11,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:11,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-21 20:39:11,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:11,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-21 20:39:11,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:39:11,093 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:11,121 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2024-11-21 20:39:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 20:39:11,122 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 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 23 [2024-11-21 20:39:11,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:11,125 INFO L225 Difference]: With dead ends: 51 [2024-11-21 20:39:11,125 INFO L226 Difference]: Without dead ends: 38 [2024-11-21 20:39:11,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:39:11,125 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:11,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-21 20:39:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-21 20:39:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-21 20:39:11,136 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 23 [2024-11-21 20:39:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:11,137 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-21 20:39:11,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-21 20:39:11,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-21 20:39:11,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:11,138 INFO L215 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:11,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 20:39:11,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:11,338 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:11,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1940857682, now seen corresponding path program 3 times [2024-11-21 20:39:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:11,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999129940] [2024-11-21 20:39:11,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:39:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:11,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 20:39:11,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-21 20:39:11,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999129940] [2024-11-21 20:39:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999129940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449601426] [2024-11-21 20:39:11,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:39:11,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:11,544 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) [2024-11-21 20:39:11,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:39:11,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 20:39:11,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:11,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-21 20:39:11,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:39:11,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-21 20:39:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-21 20:39:11,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:11,859 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-21 20:39:11,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-21 20:39:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-21 20:39:11,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449601426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:11,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:11,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-21 20:39:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282791455] [2024-11-21 20:39:11,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:11,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-21 20:39:11,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-21 20:39:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-21 20:39:11,894 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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) [2024-11-21 20:39:11,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:11,943 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-21 20:39:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:39:11,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 35 [2024-11-21 20:39:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:11,945 INFO L225 Difference]: With dead ends: 44 [2024-11-21 20:39:11,945 INFO L226 Difference]: Without dead ends: 42 [2024-11-21 20:39:11,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-21 20:39:11,946 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:11,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 60 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:11,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-21 20:39:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-21 20:39:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-21 20:39:11,959 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 35 [2024-11-21 20:39:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:11,959 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-21 20:39:11,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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) [2024-11-21 20:39:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-21 20:39:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-21 20:39:11,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:11,961 INFO L215 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:11,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 20:39:12,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:12,166 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:12,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash 318651748, now seen corresponding path program 1 times [2024-11-21 20:39:12,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:12,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865137219] [2024-11-21 20:39:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:39:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:39:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-21 20:39:12,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865137219] [2024-11-21 20:39:12,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865137219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537770756] [2024-11-21 20:39:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:39:12,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:12,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:12,640 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) [2024-11-21 20:39:12,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:39:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:39:12,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-21 20:39:12,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:39:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-21 20:39:12,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-21 20:39:13,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537770756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:13,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:13,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-21 20:39:13,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340249644] [2024-11-21 20:39:13,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:13,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-21 20:39:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-21 20:39:13,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:39:13,404 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:13,472 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2024-11-21 20:39:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-21 20:39:13,475 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-21 20:39:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:13,476 INFO L225 Difference]: With dead ends: 79 [2024-11-21 20:39:13,476 INFO L226 Difference]: Without dead ends: 64 [2024-11-21 20:39:13,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:39:13,477 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:13,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:13,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-21 20:39:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-21 20:39:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2024-11-21 20:39:13,487 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 39 [2024-11-21 20:39:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:13,487 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2024-11-21 20:39:13,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2024-11-21 20:39:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-21 20:39:13,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:13,490 INFO L215 NwaCegarLoop]: trace histogram [46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:13,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 20:39:13,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:13,694 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:13,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash -723065372, now seen corresponding path program 2 times [2024-11-21 20:39:13,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:13,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003950038] [2024-11-21 20:39:13,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:39:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:13,738 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:39:13,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-21 20:39:15,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:15,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003950038] [2024-11-21 20:39:15,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003950038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:15,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257852450] [2024-11-21 20:39:15,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:39:15,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:15,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:15,049 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) [2024-11-21 20:39:15,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:39:15,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:39:15,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:15,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-21 20:39:15,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:39:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-21 20:39:15,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-21 20:39:17,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257852450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:17,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:17,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-21 20:39:17,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094655663] [2024-11-21 20:39:17,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:17,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-21 20:39:17,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:17,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-21 20:39:17,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:39:17,284 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 97 states, 97 states have (on average 1.134020618556701) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:17,365 INFO L93 Difference]: Finished difference Result 127 states and 182 transitions. [2024-11-21 20:39:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-21 20:39:17,366 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.134020618556701) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-21 20:39:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:17,367 INFO L225 Difference]: With dead ends: 127 [2024-11-21 20:39:17,367 INFO L226 Difference]: Without dead ends: 112 [2024-11-21 20:39:17,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:39:17,369 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:17,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-21 20:39:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-21 20:39:17,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:17,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2024-11-21 20:39:17,382 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 63 [2024-11-21 20:39:17,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:17,382 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2024-11-21 20:39:17,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.134020618556701) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:17,382 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2024-11-21 20:39:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-21 20:39:17,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:17,384 INFO L215 NwaCegarLoop]: trace histogram [94, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:17,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 20:39:17,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:17,585 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:17,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1924942108, now seen corresponding path program 3 times [2024-11-21 20:39:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870054936] [2024-11-21 20:39:17,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:39:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:17,623 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 20:39:17,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2024-11-21 20:39:17,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:17,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870054936] [2024-11-21 20:39:17,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870054936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:17,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272901483] [2024-11-21 20:39:17,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:39:17,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:17,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:17,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:39:17,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:39:17,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 20:39:17,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:17,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-21 20:39:17,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:39:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2024-11-21 20:39:17,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2024-11-21 20:39:18,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272901483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:18,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:18,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-21 20:39:18,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672977763] [2024-11-21 20:39:18,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:18,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-21 20:39:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-21 20:39:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:39:18,003 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:18,042 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2024-11-21 20:39:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:39:18,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 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 111 [2024-11-21 20:39:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:18,043 INFO L225 Difference]: With dead ends: 127 [2024-11-21 20:39:18,043 INFO L226 Difference]: Without dead ends: 115 [2024-11-21 20:39:18,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:39:18,044 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:18,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 64 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:39:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-21 20:39:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-21 20:39:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0526315789473684) internal successors, (120), 114 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2024-11-21 20:39:18,052 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 111 [2024-11-21 20:39:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:18,053 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2024-11-21 20:39:18,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2024-11-21 20:39:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-21 20:39:18,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:18,054 INFO L215 NwaCegarLoop]: trace histogram [94, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:18,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 20:39:18,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:18,254 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:18,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash -489953198, now seen corresponding path program 4 times [2024-11-21 20:39:18,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:18,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953553569] [2024-11-21 20:39:18,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:39:18,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:18,340 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:39:18,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4476 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-21 20:39:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953553569] [2024-11-21 20:39:22,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953553569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520871068] [2024-11-21 20:39:22,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:39:22,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:22,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:22,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:39:22,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:39:22,428 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:39:22,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:22,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-21 20:39:22,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:39:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4476 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-21 20:39:22,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4476 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-21 20:39:29,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520871068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:29,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:29,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-21 20:39:29,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107426227] [2024-11-21 20:39:29,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:29,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-21 20:39:29,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-21 20:39:29,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 20:39:29,417 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:39:29,656 INFO L93 Difference]: Finished difference Result 229 states and 334 transitions. [2024-11-21 20:39:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-21 20:39:29,657 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 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 114 [2024-11-21 20:39:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:39:29,659 INFO L225 Difference]: With dead ends: 229 [2024-11-21 20:39:29,660 INFO L226 Difference]: Without dead ends: 211 [2024-11-21 20:39:29,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 20:39:29,662 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:39:29,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:39:29,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-21 20:39:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-11-21 20:39:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0285714285714285) internal successors, (216), 210 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 216 transitions. [2024-11-21 20:39:29,683 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 216 transitions. Word has length 114 [2024-11-21 20:39:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:39:29,683 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 216 transitions. [2024-11-21 20:39:29,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:39:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 216 transitions. [2024-11-21 20:39:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-21 20:39:29,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:39:29,685 INFO L215 NwaCegarLoop]: trace histogram [190, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:39:29,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 20:39:29,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 20:39:29,887 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:39:29,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:39:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash -836172206, now seen corresponding path program 5 times [2024-11-21 20:39:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:39:29,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071936017] [2024-11-21 20:39:29,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:39:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:39:33,517 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2024-11-21 20:39:33,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:39:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18156 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-21 20:39:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:39:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071936017] [2024-11-21 20:39:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071936017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:39:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942554651] [2024-11-21 20:39:47,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:39:47,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:39:47,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:39:47,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:39:47,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process