./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label22.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6203532a9ef5ba90e15dbd2d5728025b7640a6606e85e563b08b8dcbd8cbea0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:16:31,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:16:31,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:16:31,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:16:31,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:16:31,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:16:31,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:16:31,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:16:31,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:16:31,664 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:16:31,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:16:31,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:16:31,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:16:31,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:16:31,665 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:16:31,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:16:31,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:16:31,668 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:16:31,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:16:31,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:16:31,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:16:31,671 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:16:31,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:16:31,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:16:31,671 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:16:31,671 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:16:31,672 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:16:31,672 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:16:31,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:16:31,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:16:31,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:16:31,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:16:31,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:16:31,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:16:31,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:16:31,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:16:31,673 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:16:31,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:16:31,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:16:31,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:16:31,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:16:31,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:16:31,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6203532a9ef5ba90e15dbd2d5728025b7640a6606e85e563b08b8dcbd8cbea0 [2024-10-12 15:16:31,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:16:31,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:16:31,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:16:31,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:16:31,882 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:16:31,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2024-10-12 15:16:33,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:16:33,330 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:16:33,339 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2024-10-12 15:16:33,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3960b84e/f605adaf54d04dcea953ac33f7621124/FLAGcaf95b300 [2024-10-12 15:16:33,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3960b84e/f605adaf54d04dcea953ac33f7621124 [2024-10-12 15:16:33,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:16:33,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:16:33,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:16:33,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:16:33,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:16:33,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2c5f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33, skipping insertion in model container [2024-10-12 15:16:33,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:16:33,635 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label22.c[16445,16458] [2024-10-12 15:16:33,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:16:33,683 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:16:33,730 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label22.c[16445,16458] [2024-10-12 15:16:33,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:16:33,754 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:16:33,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33 WrapperNode [2024-10-12 15:16:33,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:16:33,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:16:33,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:16:33,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:16:33,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,809 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2024-10-12 15:16:33,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:16:33,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:16:33,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:16:33,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:16:33,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,824 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,841 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 15:16:33,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:16:33,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:16:33,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:16:33,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:16:33,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (1/1) ... [2024-10-12 15:16:33,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:16:33,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:16:33,915 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) [2024-10-12 15:16:33,920 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 [2024-10-12 15:16:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:16:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:16:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:16:33,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:16:34,018 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:16:34,020 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:16:34,742 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-10-12 15:16:34,743 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:16:34,783 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:16:34,783 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:16:34,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:34 BoogieIcfgContainer [2024-10-12 15:16:34,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:16:34,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:16:34,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:16:34,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:16:34,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:16:33" (1/3) ... [2024-10-12 15:16:34,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205cf3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:16:34, skipping insertion in model container [2024-10-12 15:16:34,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:33" (2/3) ... [2024-10-12 15:16:34,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205cf3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:16:34, skipping insertion in model container [2024-10-12 15:16:34,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:34" (3/3) ... [2024-10-12 15:16:34,791 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2024-10-12 15:16:34,804 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:16:34,804 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:16:34,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:16:34,897 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;@636de27d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:16:34,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:16:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 163 states have (on average 1.9202453987730062) internal successors, (313), 164 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-12 15:16:34,911 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:34,913 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:34,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:34,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash 240932790, now seen corresponding path program 1 times [2024-10-12 15:16:34,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:34,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656303145] [2024-10-12 15:16:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:34,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:35,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:35,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656303145] [2024-10-12 15:16:35,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656303145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:35,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:35,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:35,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812479795] [2024-10-12 15:16:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:35,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:16:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:16:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:16:35,283 INFO L87 Difference]: Start difference. First operand has 165 states, 163 states have (on average 1.9202453987730062) internal successors, (313), 164 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:35,314 INFO L93 Difference]: Finished difference Result 329 states and 625 transitions. [2024-10-12 15:16:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:16:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-10-12 15:16:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:35,324 INFO L225 Difference]: With dead ends: 329 [2024-10-12 15:16:35,325 INFO L226 Difference]: Without dead ends: 163 [2024-10-12 15:16:35,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:16:35,329 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:35,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:16:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-12 15:16:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-10-12 15:16:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 162 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2024-10-12 15:16:35,361 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 96 [2024-10-12 15:16:35,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:35,361 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2024-10-12 15:16:35,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2024-10-12 15:16:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-12 15:16:35,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:35,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:35,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:16:35,367 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:35,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1525756910, now seen corresponding path program 1 times [2024-10-12 15:16:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:35,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208162340] [2024-10-12 15:16:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:35,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:35,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208162340] [2024-10-12 15:16:35,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208162340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:35,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:35,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:35,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94437662] [2024-10-12 15:16:35,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:35,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:35,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:35,563 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:36,025 INFO L93 Difference]: Finished difference Result 470 states and 719 transitions. [2024-10-12 15:16:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:36,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-10-12 15:16:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:36,030 INFO L225 Difference]: With dead ends: 470 [2024-10-12 15:16:36,030 INFO L226 Difference]: Without dead ends: 308 [2024-10-12 15:16:36,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:36,034 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 53 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:36,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 116 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-12 15:16:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2024-10-12 15:16:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.3311475409836067) internal successors, (406), 305 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 406 transitions. [2024-10-12 15:16:36,048 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 406 transitions. Word has length 96 [2024-10-12 15:16:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:36,048 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 406 transitions. [2024-10-12 15:16:36,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 406 transitions. [2024-10-12 15:16:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-12 15:16:36,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:36,050 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:36,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:16:36,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:36,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:36,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1440100729, now seen corresponding path program 1 times [2024-10-12 15:16:36,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:36,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985788372] [2024-10-12 15:16:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:36,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:36,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:36,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985788372] [2024-10-12 15:16:36,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985788372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:36,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:36,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:36,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141680866] [2024-10-12 15:16:36,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:36,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:36,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:36,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:36,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:36,208 INFO L87 Difference]: Start difference. First operand 306 states and 406 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:36,561 INFO L93 Difference]: Finished difference Result 757 states and 1033 transitions. [2024-10-12 15:16:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:36,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-10-12 15:16:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:36,564 INFO L225 Difference]: With dead ends: 757 [2024-10-12 15:16:36,564 INFO L226 Difference]: Without dead ends: 452 [2024-10-12 15:16:36,565 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 [2024-10-12 15:16:36,569 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 67 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:36,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 245 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:16:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-10-12 15:16:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2024-10-12 15:16:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.2793791574279378) internal successors, (577), 451 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 577 transitions. [2024-10-12 15:16:36,597 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 577 transitions. Word has length 101 [2024-10-12 15:16:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:36,598 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 577 transitions. [2024-10-12 15:16:36,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 577 transitions. [2024-10-12 15:16:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-12 15:16:36,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:36,600 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:36,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:16:36,600 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:36,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1380372012, now seen corresponding path program 1 times [2024-10-12 15:16:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:36,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836235257] [2024-10-12 15:16:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:36,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:36,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:36,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836235257] [2024-10-12 15:16:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836235257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:36,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:36,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700055224] [2024-10-12 15:16:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:36,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:36,699 INFO L87 Difference]: Start difference. First operand 452 states and 577 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:37,059 INFO L93 Difference]: Finished difference Result 1324 states and 1690 transitions. [2024-10-12 15:16:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:37,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2024-10-12 15:16:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:37,062 INFO L225 Difference]: With dead ends: 1324 [2024-10-12 15:16:37,062 INFO L226 Difference]: Without dead ends: 873 [2024-10-12 15:16:37,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:37,068 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 185 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:37,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 77 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:16:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-10-12 15:16:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2024-10-12 15:16:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.2305045871559632) internal successors, (1073), 872 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1073 transitions. [2024-10-12 15:16:37,089 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1073 transitions. Word has length 113 [2024-10-12 15:16:37,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:37,089 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1073 transitions. [2024-10-12 15:16:37,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,090 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1073 transitions. [2024-10-12 15:16:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-12 15:16:37,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:37,095 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:37,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 15:16:37,096 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:37,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash 732494863, now seen corresponding path program 1 times [2024-10-12 15:16:37,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:37,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616751867] [2024-10-12 15:16:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:37,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:37,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616751867] [2024-10-12 15:16:37,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616751867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:37,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:37,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:37,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479673845] [2024-10-12 15:16:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:37,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:37,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:37,213 INFO L87 Difference]: Start difference. First operand 873 states and 1073 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:37,577 INFO L93 Difference]: Finished difference Result 2026 states and 2554 transitions. [2024-10-12 15:16:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-10-12 15:16:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:37,582 INFO L225 Difference]: With dead ends: 2026 [2024-10-12 15:16:37,583 INFO L226 Difference]: Without dead ends: 1154 [2024-10-12 15:16:37,583 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 [2024-10-12 15:16:37,584 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 77 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:37,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 223 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:16:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-10-12 15:16:37,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1153. [2024-10-12 15:16:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.2439236111111112) internal successors, (1433), 1152 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1433 transitions. [2024-10-12 15:16:37,599 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1433 transitions. Word has length 126 [2024-10-12 15:16:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:37,600 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1433 transitions. [2024-10-12 15:16:37,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1433 transitions. [2024-10-12 15:16:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-10-12 15:16:37,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:37,601 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:37,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:16:37,602 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:37,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash -297517082, now seen corresponding path program 1 times [2024-10-12 15:16:37,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020943518] [2024-10-12 15:16:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:37,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:37,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020943518] [2024-10-12 15:16:37,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020943518] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:37,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:37,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:37,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156350927] [2024-10-12 15:16:37,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:37,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:37,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:37,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:37,694 INFO L87 Difference]: Start difference. First operand 1153 states and 1433 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:37,873 INFO L93 Difference]: Finished difference Result 2294 states and 2851 transitions. [2024-10-12 15:16:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:37,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2024-10-12 15:16:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:37,879 INFO L225 Difference]: With dead ends: 2294 [2024-10-12 15:16:37,879 INFO L226 Difference]: Without dead ends: 1142 [2024-10-12 15:16:37,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:37,880 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 181 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:37,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 21 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 15:16:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2024-10-12 15:16:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1142. [2024-10-12 15:16:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 1.1998247151621384) internal successors, (1369), 1141 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1369 transitions. [2024-10-12 15:16:37,895 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1369 transitions. Word has length 129 [2024-10-12 15:16:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:37,896 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 1369 transitions. [2024-10-12 15:16:37,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1369 transitions. [2024-10-12 15:16:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-12 15:16:37,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:37,898 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:37,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:16:37,898 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:37,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -992353176, now seen corresponding path program 1 times [2024-10-12 15:16:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637739611] [2024-10-12 15:16:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 15:16:37,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:37,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637739611] [2024-10-12 15:16:37,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637739611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:37,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:37,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:37,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333006966] [2024-10-12 15:16:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:37,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:37,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:37,966 INFO L87 Difference]: Start difference. First operand 1142 states and 1369 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:38,289 INFO L93 Difference]: Finished difference Result 3127 states and 3709 transitions. [2024-10-12 15:16:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:38,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 135 [2024-10-12 15:16:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:38,295 INFO L225 Difference]: With dead ends: 3127 [2024-10-12 15:16:38,295 INFO L226 Difference]: Without dead ends: 1986 [2024-10-12 15:16:38,296 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 [2024-10-12 15:16:38,297 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 141 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:38,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 84 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:16:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2024-10-12 15:16:38,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1703. [2024-10-12 15:16:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1702 states have (on average 1.172150411280846) internal successors, (1995), 1702 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 1995 transitions. [2024-10-12 15:16:38,328 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 1995 transitions. Word has length 135 [2024-10-12 15:16:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:38,328 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 1995 transitions. [2024-10-12 15:16:38,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:38,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 1995 transitions. [2024-10-12 15:16:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-12 15:16:38,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:38,331 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:38,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 15:16:38,331 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:38,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1627610335, now seen corresponding path program 1 times [2024-10-12 15:16:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:38,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074290974] [2024-10-12 15:16:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:38,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 15:16:38,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074290974] [2024-10-12 15:16:38,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074290974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:38,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995260144] [2024-10-12 15:16:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:38,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:38,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:38,415 INFO L87 Difference]: Start difference. First operand 1703 states and 1995 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:38,720 INFO L93 Difference]: Finished difference Result 3685 states and 4294 transitions. [2024-10-12 15:16:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:38,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 142 [2024-10-12 15:16:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:38,725 INFO L225 Difference]: With dead ends: 3685 [2024-10-12 15:16:38,725 INFO L226 Difference]: Without dead ends: 1701 [2024-10-12 15:16:38,728 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 [2024-10-12 15:16:38,730 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 148 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:38,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 38 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:16:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2024-10-12 15:16:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1561. [2024-10-12 15:16:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 1.089102564102564) internal successors, (1699), 1560 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 1699 transitions. [2024-10-12 15:16:38,751 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 1699 transitions. Word has length 142 [2024-10-12 15:16:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:38,751 INFO L471 AbstractCegarLoop]: Abstraction has 1561 states and 1699 transitions. [2024-10-12 15:16:38,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 1699 transitions. [2024-10-12 15:16:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-12 15:16:38,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:38,753 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:38,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 15:16:38,753 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:38,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash -618631339, now seen corresponding path program 1 times [2024-10-12 15:16:38,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:38,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540891402] [2024-10-12 15:16:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:38,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 15:16:38,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540891402] [2024-10-12 15:16:38,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540891402] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:16:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977026539] [2024-10-12 15:16:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:38,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:16:38,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:16:38,996 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) [2024-10-12 15:16:38,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 15:16:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:39,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:16:39,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:16:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 15:16:39,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:16:39,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977026539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:39,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:16:39,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-12 15:16:39,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355675166] [2024-10-12 15:16:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:39,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:39,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:16:39,249 INFO L87 Difference]: Start difference. First operand 1561 states and 1699 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:39,536 INFO L93 Difference]: Finished difference Result 3258 states and 3539 transitions. [2024-10-12 15:16:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:39,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-10-12 15:16:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:39,549 INFO L225 Difference]: With dead ends: 3258 [2024-10-12 15:16:39,549 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 15:16:39,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:16:39,551 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 83 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:39,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:16:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 15:16:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 15:16:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 15:16:39,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 146 [2024-10-12 15:16:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:39,552 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 15:16:39,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 15:16:39,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 15:16:39,556 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 15:16:39,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 15:16:39,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:16:39,760 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:39,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 15:16:39,872 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 15:16:39,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:16:39 BoogieIcfgContainer [2024-10-12 15:16:39,887 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 15:16:39,888 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 15:16:39,888 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 15:16:39,888 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 15:16:39,888 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:34" (3/4) ... [2024-10-12 15:16:39,890 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 15:16:39,906 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-12 15:16:39,907 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-12 15:16:39,907 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 15:16:39,908 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 15:16:40,020 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 15:16:40,020 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 15:16:40,021 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 15:16:40,021 INFO L158 Benchmark]: Toolchain (without parser) took 6650.97ms. Allocated memory was 176.2MB in the beginning and 274.7MB in the end (delta: 98.6MB). Free memory was 146.2MB in the beginning and 199.9MB in the end (delta: -53.7MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2024-10-12 15:16:40,023 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 15:16:40,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.17ms. Allocated memory is still 176.2MB. Free memory was 146.2MB in the beginning and 117.7MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-12 15:16:40,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.92ms. Allocated memory is still 176.2MB. Free memory was 117.0MB in the beginning and 111.4MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 15:16:40,023 INFO L158 Benchmark]: Boogie Preprocessor took 73.90ms. Allocated memory is still 176.2MB. Free memory was 111.4MB in the beginning and 106.5MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 15:16:40,023 INFO L158 Benchmark]: RCFGBuilder took 898.88ms. Allocated memory is still 176.2MB. Free memory was 106.5MB in the beginning and 73.2MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-10-12 15:16:40,024 INFO L158 Benchmark]: TraceAbstraction took 5102.38ms. Allocated memory was 176.2MB in the beginning and 274.7MB in the end (delta: 98.6MB). Free memory was 72.2MB in the beginning and 212.5MB in the end (delta: -140.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 15:16:40,024 INFO L158 Benchmark]: Witness Printer took 133.02ms. Allocated memory is still 274.7MB. Free memory was 212.5MB in the beginning and 199.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 15:16:40,025 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.17ms. Allocated memory is still 176.2MB. Free memory was 146.2MB in the beginning and 117.7MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.92ms. Allocated memory is still 176.2MB. Free memory was 117.0MB in the beginning and 111.4MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.90ms. Allocated memory is still 176.2MB. Free memory was 111.4MB in the beginning and 106.5MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 898.88ms. Allocated memory is still 176.2MB. Free memory was 106.5MB in the beginning and 73.2MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5102.38ms. Allocated memory was 176.2MB in the beginning and 274.7MB in the end (delta: 98.6MB). Free memory was 72.2MB in the beginning and 212.5MB in the end (delta: -140.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 133.02ms. Allocated memory is still 274.7MB. Free memory was 212.5MB in the beginning and 199.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 473]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 165 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 935 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 935 mSDsluCounter, 1083 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 510 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2626 IncrementalHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 510 mSolverCounterUnsat, 989 mSDtfsCounter, 2626 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1703occurred in iteration=7, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 426 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1230 NumberOfCodeBlocks, 1230 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1220 ConstructedInterpolants, 0 QuantifiedInterpolants, 2726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 287 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 351/359 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a17 == 8) && (a28 <= 7)) || ((a17 == 8) && (a19 == 1))) || (((a17 <= 8) && (a19 == 1)) && (a28 <= 7))) || (((a17 == 8) && (a28 <= 10)) && (a25 != 1))) || (((9 <= a28) && (a17 <= 8)) && (a28 <= 10))) RESULT: Ultimate proved your program to be correct! [2024-10-12 15:16:40,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE