./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum_const2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/zero_sum_const2.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 1be1405ed24182ea691f06aafa4c0ada74bba78ab2a6f90fefc65156bb70df6c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:12:21,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:12:21,834 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:12:21,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:12:21,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:12:21,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:12:21,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:12:21,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:12:21,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:12:21,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:12:21,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:12:21,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:12:21,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:12:21,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:12:21,883 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:12:21,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:12:21,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:12:21,884 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:12:21,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:12:21,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:12:21,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:12:21,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:12:21,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:12:21,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:12:21,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:12:21,887 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:12:21,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:12:21,888 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:12:21,888 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:12:21,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:12:21,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:12:21,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:12:21,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:12:21,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:12:21,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:12:21,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:12:21,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:12:21,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:12:21,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:12:21,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:12:21,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:12:21,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:12:21,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1be1405ed24182ea691f06aafa4c0ada74bba78ab2a6f90fefc65156bb70df6c [2024-11-09 18:12:22,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:12:22,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:12:22,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:12:22,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:12:22,167 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:12:22,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_const2.c [2024-11-09 18:12:23,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:12:23,746 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:12:23,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const2.c [2024-11-09 18:12:23,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/793cd9ab1/9b293bb7ee8a45558924a389a9840d1f/FLAG0dba104ba [2024-11-09 18:12:23,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/793cd9ab1/9b293bb7ee8a45558924a389a9840d1f [2024-11-09 18:12:23,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:12:23,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:12:23,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:12:23,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:12:23,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:12:23,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:12:23" (1/1) ... [2024-11-09 18:12:23,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590f01cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:23, skipping insertion in model container [2024-11-09 18:12:23,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:12:23" (1/1) ... [2024-11-09 18:12:23,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:12:23,972 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const2.c[406,419] [2024-11-09 18:12:23,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:12:24,008 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:12:24,020 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const2.c[406,419] [2024-11-09 18:12:24,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:12:24,047 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:12:24,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24 WrapperNode [2024-11-09 18:12:24,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:12:24,049 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:12:24,049 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:12:24,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:12:24,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,083 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-11-09 18:12:24,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:12:24,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:12:24,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:12:24,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:12:24,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,123 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 18:12:24,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,128 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:12:24,140 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:12:24,140 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:12:24,141 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:12:24,142 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (1/1) ... [2024-11-09 18:12:24,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:12:24,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:24,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:12:24,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:12:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:12:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:12:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:12:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:12:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:12:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:12:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:12:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:12:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:12:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:12:24,313 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:12:24,315 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:12:24,470 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 18:12:24,470 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:12:24,480 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:12:24,481 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:12:24,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:12:24 BoogieIcfgContainer [2024-11-09 18:12:24,481 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:12:24,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:12:24,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:12:24,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:12:24,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:12:23" (1/3) ... [2024-11-09 18:12:24,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cff7621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:12:24, skipping insertion in model container [2024-11-09 18:12:24,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:24" (2/3) ... [2024-11-09 18:12:24,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cff7621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:12:24, skipping insertion in model container [2024-11-09 18:12:24,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:12:24" (3/3) ... [2024-11-09 18:12:24,490 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const2.c [2024-11-09 18:12:24,505 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:12:24,505 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:12:24,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:12:24,560 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;@470f3e4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:12:24,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:12:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 18:12:24,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:24,571 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:24,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:24,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 131574968, now seen corresponding path program 1 times [2024-11-09 18:12:24,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007430381] [2024-11-09 18:12:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:24,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007430381] [2024-11-09 18:12:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007430381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:24,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:24,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:12:24,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357205741] [2024-11-09 18:12:24,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:24,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:12:24,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:24,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:12:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:12:24,803 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:24,821 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2024-11-09 18:12:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:12:24,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 18:12:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:24,830 INFO L225 Difference]: With dead ends: 50 [2024-11-09 18:12:24,830 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 18:12:24,834 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 [2024-11-09 18:12:24,838 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:24,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:12:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 18:12:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 18:12:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-09 18:12:24,870 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2024-11-09 18:12:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:24,871 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-09 18:12:24,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-09 18:12:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 18:12:24,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:24,873 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] [2024-11-09 18:12:24,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:12:24,873 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:24,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:24,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1145332249, now seen corresponding path program 1 times [2024-11-09 18:12:24,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:24,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955344066] [2024-11-09 18:12:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:24,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:25,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955344066] [2024-11-09 18:12:25,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955344066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:25,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:25,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:12:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976360038] [2024-11-09 18:12:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:25,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:12:25,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:12:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:12:25,023 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:25,096 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-11-09 18:12:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:12:25,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-09 18:12:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:25,097 INFO L225 Difference]: With dead ends: 41 [2024-11-09 18:12:25,097 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 18:12:25,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:12:25,099 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:25,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 18:12:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 18:12:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-09 18:12:25,121 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 21 [2024-11-09 18:12:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:25,121 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-09 18:12:25,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-09 18:12:25,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 18:12:25,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:25,123 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:25,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:12:25,126 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:25,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash 675862136, now seen corresponding path program 1 times [2024-11-09 18:12:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:25,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73778745] [2024-11-09 18:12:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:12:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73778745] [2024-11-09 18:12:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73778745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:25,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:25,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:12:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796371058] [2024-11-09 18:12:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:25,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:12:25,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:12:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:12:25,282 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:25,344 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-11-09 18:12:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:12:25,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 18:12:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:25,347 INFO L225 Difference]: With dead ends: 46 [2024-11-09 18:12:25,348 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 18:12:25,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:12:25,350 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:25,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 25 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:12:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 18:12:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 18:12:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-09 18:12:25,362 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2024-11-09 18:12:25,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:25,362 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-09 18:12:25,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-09 18:12:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 18:12:25,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:25,364 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 18:12:25,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:12:25,364 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:25,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:25,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1506281336, now seen corresponding path program 1 times [2024-11-09 18:12:25,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:25,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363704129] [2024-11-09 18:12:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:25,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:12:25,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363704129] [2024-11-09 18:12:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363704129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143061283] [2024-11-09 18:12:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:25,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:25,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:25,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:25,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:12:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:25,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:12:25,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:25,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:12:25,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:12:25,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143061283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:25,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:25,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 18:12:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414590160] [2024-11-09 18:12:25,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:25,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:12:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:12:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:12:25,731 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:25,798 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-09 18:12:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:12:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 18:12:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:25,800 INFO L225 Difference]: With dead ends: 59 [2024-11-09 18:12:25,800 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 18:12:25,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:12:25,802 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:25,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 18:12:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 18:12:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-09 18:12:25,815 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 31 [2024-11-09 18:12:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:25,815 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-09 18:12:25,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-09 18:12:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 18:12:25,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:25,817 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 18:12:25,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:12:26,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:26,018 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:26,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash -357969641, now seen corresponding path program 2 times [2024-11-09 18:12:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:26,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222324408] [2024-11-09 18:12:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222324408] [2024-11-09 18:12:26,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222324408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287384439] [2024-11-09 18:12:26,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:12:26,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:26,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:26,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:26,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:12:26,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:12:26,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:26,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:12:26,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:26,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:26,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287384439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:26,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:26,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 18:12:26,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251548957] [2024-11-09 18:12:26,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:26,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 18:12:26,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 18:12:26,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:12:26,350 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:26,415 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-09 18:12:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:12:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 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 33 [2024-11-09 18:12:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:26,417 INFO L225 Difference]: With dead ends: 62 [2024-11-09 18:12:26,417 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 18:12:26,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:12:26,418 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:26,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 57 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 18:12:26,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-09 18:12:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-09 18:12:26,424 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 33 [2024-11-09 18:12:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:26,424 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-09 18:12:26,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-09 18:12:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 18:12:26,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:26,426 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:26,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:12:26,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:26,627 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:26,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -462167529, now seen corresponding path program 3 times [2024-11-09 18:12:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428924425] [2024-11-09 18:12:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:28,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428924425] [2024-11-09 18:12:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428924425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662779610] [2024-11-09 18:12:28,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:12:28,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:28,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:28,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:12:28,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:12:28,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:28,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 18:12:28,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:28,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:28,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:28,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 18:12:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:12:28,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:12:29,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662779610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:29,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:29,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 30 [2024-11-09 18:12:29,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724697503] [2024-11-09 18:12:29,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:29,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 18:12:29,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:29,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 18:12:29,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:12:29,195 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:29,714 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2024-11-09 18:12:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:12:29,714 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 states have internal predecessors, (111), 0 states have call successors, (0), 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 41 [2024-11-09 18:12:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:29,715 INFO L225 Difference]: With dead ends: 70 [2024-11-09 18:12:29,717 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 18:12:29,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 18:12:29,718 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:29,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 322 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:12:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 18:12:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2024-11-09 18:12:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-11-09 18:12:29,736 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 41 [2024-11-09 18:12:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:29,737 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-11-09 18:12:29,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-11-09 18:12:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:12:29,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:29,738 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-09 18:12:29,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:29,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:29,943 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:29,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:29,944 INFO L85 PathProgramCache]: Analyzing trace with hash 160574838, now seen corresponding path program 4 times [2024-11-09 18:12:29,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:29,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287083959] [2024-11-09 18:12:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:29,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:12:30,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:30,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287083959] [2024-11-09 18:12:30,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287083959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:30,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427773477] [2024-11-09 18:12:30,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:12:30,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:30,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:30,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:30,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:12:30,121 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:12:30,121 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:30,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:12:30,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:12:30,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:12:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427773477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:30,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:30,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:12:30,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819732975] [2024-11-09 18:12:30,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:30,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:12:30,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:30,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:12:30,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:12:30,279 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:30,412 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2024-11-09 18:12:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:12:30,413 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 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 43 [2024-11-09 18:12:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:30,415 INFO L225 Difference]: With dead ends: 127 [2024-11-09 18:12:30,415 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 18:12:30,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:12:30,417 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:30,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 96 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 18:12:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2024-11-09 18:12:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2024-11-09 18:12:30,434 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 43 [2024-11-09 18:12:30,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:30,435 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2024-11-09 18:12:30,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2024-11-09 18:12:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 18:12:30,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:30,436 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:30,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:30,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:30,637 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:30,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1444331607, now seen corresponding path program 5 times [2024-11-09 18:12:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:30,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007996326] [2024-11-09 18:12:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:30,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 18:12:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:30,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007996326] [2024-11-09 18:12:30,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007996326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:30,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471196317] [2024-11-09 18:12:30,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:12:30,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:30,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:30,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:30,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:12:30,813 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 18:12:30,813 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:30,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:12:30,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 18:12:30,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 18:12:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471196317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:30,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:30,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:12:30,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239479345] [2024-11-09 18:12:30,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:30,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:12:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:30,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:12:30,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:12:30,979 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:31,127 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-09 18:12:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:12:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-09 18:12:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:31,128 INFO L225 Difference]: With dead ends: 71 [2024-11-09 18:12:31,129 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 18:12:31,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:12:31,130 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:31,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 124 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 18:12:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-09 18:12:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-09 18:12:31,140 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 45 [2024-11-09 18:12:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:31,140 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-09 18:12:31,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-09 18:12:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:12:31,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:31,141 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:31,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:31,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:31,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:31,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 907387382, now seen corresponding path program 6 times [2024-11-09 18:12:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:31,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063220498] [2024-11-09 18:12:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:31,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:33,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:33,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063220498] [2024-11-09 18:12:33,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063220498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:33,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653878161] [2024-11-09 18:12:33,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:12:33,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:33,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:33,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:33,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:12:33,438 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 18:12:33,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:33,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 18:12:33,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:33,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:34,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:34,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 39 [2024-11-09 18:12:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:12:34,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:12:34,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653878161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:34,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:34,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 13] total 46 [2024-11-09 18:12:34,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199752532] [2024-11-09 18:12:34,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:34,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-09 18:12:34,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-09 18:12:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1901, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 18:12:34,858 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:36,480 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2024-11-09 18:12:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 18:12:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 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 51 [2024-11-09 18:12:36,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:36,484 INFO L225 Difference]: With dead ends: 86 [2024-11-09 18:12:36,484 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 18:12:36,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=368, Invalid=3922, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 18:12:36,489 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:36,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 624 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:12:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 18:12:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2024-11-09 18:12:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 74 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:36,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2024-11-09 18:12:36,509 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 51 [2024-11-09 18:12:36,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:36,509 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2024-11-09 18:12:36,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:36,510 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2024-11-09 18:12:36,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 18:12:36,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:36,511 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:36,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:36,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:36,712 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:36,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2042851733, now seen corresponding path program 7 times [2024-11-09 18:12:36,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:36,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746020241] [2024-11-09 18:12:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:36,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:36,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:36,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746020241] [2024-11-09 18:12:36,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746020241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:36,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967935543] [2024-11-09 18:12:36,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:12:36,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:36,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:36,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:36,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:12:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:36,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:12:36,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:37,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:37,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967935543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:37,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:37,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:12:37,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534585919] [2024-11-09 18:12:37,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:37,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:12:37,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:12:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:12:37,144 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:37,311 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2024-11-09 18:12:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:12:37,311 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-09 18:12:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:37,312 INFO L225 Difference]: With dead ends: 155 [2024-11-09 18:12:37,312 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 18:12:37,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 93 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:12:37,314 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 73 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:37,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 141 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 18:12:37,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2024-11-09 18:12:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 77 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:37,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2024-11-09 18:12:37,325 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 53 [2024-11-09 18:12:37,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:37,325 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2024-11-09 18:12:37,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:37,326 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2024-11-09 18:12:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 18:12:37,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:37,327 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:37,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:37,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:37,529 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:37,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1725613898, now seen corresponding path program 8 times [2024-11-09 18:12:37,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:37,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441507426] [2024-11-09 18:12:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:12:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441507426] [2024-11-09 18:12:37,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441507426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123599412] [2024-11-09 18:12:37,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:12:37,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:37,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:37,667 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:37,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:12:37,734 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:12:37,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:37,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:12:37,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:12:37,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:12:37,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123599412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:37,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:37,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:12:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732904] [2024-11-09 18:12:37,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:37,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:12:37,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:12:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:12:37,934 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:38,101 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2024-11-09 18:12:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:12:38,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 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 55 [2024-11-09 18:12:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:38,103 INFO L225 Difference]: With dead ends: 85 [2024-11-09 18:12:38,103 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 18:12:38,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 96 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:12:38,104 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 90 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:38,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 148 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 18:12:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-09 18:12:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2024-11-09 18:12:38,116 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 55 [2024-11-09 18:12:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:38,116 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2024-11-09 18:12:38,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2024-11-09 18:12:38,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 18:12:38,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:38,117 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:38,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:12:38,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 18:12:38,318 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:38,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1158608661, now seen corresponding path program 9 times [2024-11-09 18:12:38,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:38,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772676523] [2024-11-09 18:12:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:38,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 2 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:40,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:40,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772676523] [2024-11-09 18:12:40,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772676523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:40,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115068125] [2024-11-09 18:12:40,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:12:40,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:40,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:40,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:40,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:12:40,880 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:12:40,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:40,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-09 18:12:40,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:40,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:42,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:42,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:42,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2024-11-09 18:12:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 80 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:42,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:12:43,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115068125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:43,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:43,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 21] total 67 [2024-11-09 18:12:43,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035241656] [2024-11-09 18:12:43,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:43,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-09 18:12:43,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:43,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-09 18:12:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=4018, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 18:12:43,179 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 67 states, 67 states have (on average 2.462686567164179) internal successors, (165), 67 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:45,509 INFO L93 Difference]: Finished difference Result 165 states and 184 transitions. [2024-11-09 18:12:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 18:12:45,510 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.462686567164179) internal successors, (165), 67 states have internal predecessors, (165), 0 states have call successors, (0), 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 61 [2024-11-09 18:12:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:45,511 INFO L225 Difference]: With dead ends: 165 [2024-11-09 18:12:45,511 INFO L226 Difference]: Without dead ends: 144 [2024-11-09 18:12:45,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1011, Invalid=8889, Unknown=0, NotChecked=0, Total=9900 [2024-11-09 18:12:45,513 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 144 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:45,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1176 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:12:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-09 18:12:45,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115. [2024-11-09 18:12:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0964912280701755) internal successors, (125), 114 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2024-11-09 18:12:45,532 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 61 [2024-11-09 18:12:45,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:45,533 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2024-11-09 18:12:45,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.462686567164179) internal successors, (165), 67 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2024-11-09 18:12:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 18:12:45,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:45,534 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:45,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:45,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:45,735 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:45,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:45,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1346635020, now seen corresponding path program 10 times [2024-11-09 18:12:45,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:45,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859578147] [2024-11-09 18:12:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:45,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:45,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:45,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859578147] [2024-11-09 18:12:45,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859578147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:45,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920244277] [2024-11-09 18:12:45,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:12:45,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:45,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:45,890 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:45,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:12:45,953 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:12:45,953 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:45,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:12:45,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:46,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:46,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920244277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:46,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:46,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:12:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511763681] [2024-11-09 18:12:46,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:46,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:12:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:12:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:12:46,194 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:46,392 INFO L93 Difference]: Finished difference Result 236 states and 258 transitions. [2024-11-09 18:12:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:12:46,392 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-09 18:12:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:46,393 INFO L225 Difference]: With dead ends: 236 [2024-11-09 18:12:46,393 INFO L226 Difference]: Without dead ends: 112 [2024-11-09 18:12:46,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:12:46,394 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:46,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 161 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-09 18:12:46,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2024-11-09 18:12:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 104 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2024-11-09 18:12:46,409 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 63 [2024-11-09 18:12:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:46,409 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2024-11-09 18:12:46,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2024-11-09 18:12:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 18:12:46,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:46,410 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:46,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 18:12:46,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:12:46,611 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:46,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash -285190924, now seen corresponding path program 11 times [2024-11-09 18:12:46,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:46,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782911850] [2024-11-09 18:12:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:46,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 18:12:46,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:46,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782911850] [2024-11-09 18:12:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782911850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952030149] [2024-11-09 18:12:46,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:12:46,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:46,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:46,767 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:46,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:12:46,943 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:12:46,944 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:46,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:12:46,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 18:12:47,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 18:12:47,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952030149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:47,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:47,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:12:47,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137891931] [2024-11-09 18:12:47,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:47,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:12:47,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:47,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:12:47,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:12:47,209 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:47,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:47,399 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2024-11-09 18:12:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:12:47,399 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 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 67 [2024-11-09 18:12:47,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:47,400 INFO L225 Difference]: With dead ends: 112 [2024-11-09 18:12:47,400 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 18:12:47,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 117 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-11-09 18:12:47,401 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 96 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:47,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 186 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 18:12:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2024-11-09 18:12:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-09 18:12:47,412 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 67 [2024-11-09 18:12:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:47,412 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-09 18:12:47,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-09 18:12:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 18:12:47,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:47,413 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:47,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 18:12:47,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 18:12:47,618 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:47,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1867878772, now seen corresponding path program 12 times [2024-11-09 18:12:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303269423] [2024-11-09 18:12:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:51,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303269423] [2024-11-09 18:12:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303269423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143320777] [2024-11-09 18:12:51,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:12:51,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:51,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:51,355 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:51,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:12:51,427 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 18:12:51,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:51,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-09 18:12:51,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:51,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:52,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:52,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 18:12:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:12:52,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:12:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143320777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:53,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:53,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 20, 17] total 64 [2024-11-09 18:12:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530321066] [2024-11-09 18:12:53,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:53,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 18:12:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 18:12:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3791, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 18:12:53,084 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 64 states, 64 states have (on average 2.953125) internal successors, (189), 64 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:55,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:55,349 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2024-11-09 18:12:55,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 18:12:55,349 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.953125) internal successors, (189), 64 states have internal predecessors, (189), 0 states have call successors, (0), 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 71 [2024-11-09 18:12:55,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:55,350 INFO L225 Difference]: With dead ends: 124 [2024-11-09 18:12:55,350 INFO L226 Difference]: Without dead ends: 119 [2024-11-09 18:12:55,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=537, Invalid=7835, Unknown=0, NotChecked=0, Total=8372 [2024-11-09 18:12:55,353 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 40 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:55,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1425 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:12:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-09 18:12:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2024-11-09 18:12:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 102 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2024-11-09 18:12:55,371 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 71 [2024-11-09 18:12:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:55,371 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2024-11-09 18:12:55,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.953125) internal successors, (189), 64 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2024-11-09 18:12:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 18:12:55,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:55,372 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:55,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:55,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:12:55,572 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:55,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:55,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1657108883, now seen corresponding path program 13 times [2024-11-09 18:12:55,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:55,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102145509] [2024-11-09 18:12:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 18:12:55,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:55,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102145509] [2024-11-09 18:12:55,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102145509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:55,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541702221] [2024-11-09 18:12:55,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:12:55,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:55,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:55,756 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:55,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:12:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:55,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:12:55,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 18:12:55,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 18:12:56,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541702221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:56,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:12:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939875844] [2024-11-09 18:12:56,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:56,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:12:56,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:12:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:12:56,078 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:56,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:56,253 INFO L93 Difference]: Finished difference Result 211 states and 227 transitions. [2024-11-09 18:12:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:12:56,254 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 18:12:56,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:56,254 INFO L225 Difference]: With dead ends: 211 [2024-11-09 18:12:56,255 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 18:12:56,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 127 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:12:56,256 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 142 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:56,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 189 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 18:12:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106. [2024-11-09 18:12:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0666666666666667) internal successors, (112), 105 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2024-11-09 18:12:56,272 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 73 [2024-11-09 18:12:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:56,272 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2024-11-09 18:12:56,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2024-11-09 18:12:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 18:12:56,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:56,273 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:56,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:56,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 18:12:56,474 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:56,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:56,474 INFO L85 PathProgramCache]: Analyzing trace with hash 330250548, now seen corresponding path program 14 times [2024-11-09 18:12:56,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:56,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241935455] [2024-11-09 18:12:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 20 proven. 52 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 18:12:56,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:56,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241935455] [2024-11-09 18:12:56,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241935455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:56,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365800994] [2024-11-09 18:12:56,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:12:56,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:56,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:56,638 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:56,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:12:56,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:12:56,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:56,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:12:56,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 18:12:56,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 18:12:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365800994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:56,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:56,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:12:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53119017] [2024-11-09 18:12:56,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:56,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:12:56,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:12:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:12:56,965 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:57,192 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2024-11-09 18:12:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 18:12:57,193 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-09 18:12:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:57,193 INFO L225 Difference]: With dead ends: 113 [2024-11-09 18:12:57,194 INFO L226 Difference]: Without dead ends: 82 [2024-11-09 18:12:57,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 130 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2024-11-09 18:12:57,194 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 131 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:57,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 244 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:12:57,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-09 18:12:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-09 18:12:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2024-11-09 18:12:57,209 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 75 [2024-11-09 18:12:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:57,209 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2024-11-09 18:12:57,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:12:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2024-11-09 18:12:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 18:12:57,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:57,210 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:57,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 18:12:57,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:57,411 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:57,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2104697107, now seen corresponding path program 15 times [2024-11-09 18:12:57,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:57,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558524420] [2024-11-09 18:12:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:57,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 6 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:01,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:01,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558524420] [2024-11-09 18:13:01,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558524420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:01,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25856977] [2024-11-09 18:13:01,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:13:01,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:01,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:01,524 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:01,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:13:01,650 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 18:13:01,650 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:01,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-09 18:13:01,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:01,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:13:02,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:02,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:02,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:02,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:13:02,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 71 [2024-11-09 18:13:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 12 proven. 168 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:13:03,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:13:04,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25856977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:04,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:04,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 22, 19] total 73 [2024-11-09 18:13:04,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492491086] [2024-11-09 18:13:04,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:04,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-09 18:13:04,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-09 18:13:04,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=4954, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 18:13:04,309 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 73 states, 73 states have (on average 2.9452054794520546) internal successors, (215), 73 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:07,664 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2024-11-09 18:13:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 18:13:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.9452054794520546) internal successors, (215), 73 states have internal predecessors, (215), 0 states have call successors, (0), 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 81 [2024-11-09 18:13:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:07,666 INFO L225 Difference]: With dead ends: 136 [2024-11-09 18:13:07,667 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 18:13:07,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2280 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=696, Invalid=10434, Unknown=0, NotChecked=0, Total=11130 [2024-11-09 18:13:07,671 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 43 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:07,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1670 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 18:13:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 18:13:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 117. [2024-11-09 18:13:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0689655172413792) internal successors, (124), 116 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2024-11-09 18:13:07,695 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 81 [2024-11-09 18:13:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:07,695 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2024-11-09 18:13:07,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.9452054794520546) internal successors, (215), 73 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2024-11-09 18:13:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 18:13:07,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:07,696 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:07,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 18:13:07,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:13:07,901 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:07,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1606262130, now seen corresponding path program 16 times [2024-11-09 18:13:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817175926] [2024-11-09 18:13:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:07,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 44 proven. 54 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-09 18:13:08,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:08,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817175926] [2024-11-09 18:13:08,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817175926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:08,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037879522] [2024-11-09 18:13:08,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:13:08,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:08,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:08,110 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:08,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:13:08,197 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:13:08,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:08,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:13:08,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-09 18:13:08,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-09 18:13:08,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037879522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:08,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:08,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:13:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408537329] [2024-11-09 18:13:08,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:08,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:13:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:13:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:13:08,530 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:08,763 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2024-11-09 18:13:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:13:08,764 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-09 18:13:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:08,765 INFO L225 Difference]: With dead ends: 239 [2024-11-09 18:13:08,765 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 18:13:08,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 144 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:13:08,766 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 179 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:08,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 215 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 18:13:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2024-11-09 18:13:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0588235294117647) internal successors, (126), 119 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) [2024-11-09 18:13:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 126 transitions. [2024-11-09 18:13:08,789 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 126 transitions. Word has length 83 [2024-11-09 18:13:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:08,789 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 126 transitions. [2024-11-09 18:13:08,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 126 transitions. [2024-11-09 18:13:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 18:13:08,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:08,790 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:08,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:08,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:08,991 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:08,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:08,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1148854611, now seen corresponding path program 17 times [2024-11-09 18:13:08,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:08,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177135113] [2024-11-09 18:13:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:08,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 30 proven. 68 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-09 18:13:09,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177135113] [2024-11-09 18:13:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177135113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407292752] [2024-11-09 18:13:09,171 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:13:09,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:09,172 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:09,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:13:09,360 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 18:13:09,360 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:09,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:13:09,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-09 18:13:09,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-09 18:13:09,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407292752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:09,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:09,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:13:09,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326468892] [2024-11-09 18:13:09,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:09,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:13:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:09,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:13:09,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:13:09,655 INFO L87 Difference]: Start difference. First operand 120 states and 126 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:09,863 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2024-11-09 18:13:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 18:13:09,864 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-09 18:13:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:09,864 INFO L225 Difference]: With dead ends: 127 [2024-11-09 18:13:09,864 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 18:13:09,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 147 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 18:13:09,865 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 129 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:09,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 271 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:13:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 18:13:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-09 18:13:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 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) [2024-11-09 18:13:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2024-11-09 18:13:09,884 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 85 [2024-11-09 18:13:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:09,884 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2024-11-09 18:13:09,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2024-11-09 18:13:09,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 18:13:09,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:09,886 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:09,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 18:13:10,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:10,087 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:10,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:10,088 INFO L85 PathProgramCache]: Analyzing trace with hash -444246542, now seen corresponding path program 18 times [2024-11-09 18:13:10,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:10,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760011561] [2024-11-09 18:13:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:10,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 20 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:14,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:14,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760011561] [2024-11-09 18:13:14,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760011561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:14,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483061708] [2024-11-09 18:13:14,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:13:14,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:14,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:14,766 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:14,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:13:14,900 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-09 18:13:14,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:14,903 WARN L253 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 155 conjuncts are in the unsatisfiable core [2024-11-09 18:13:14,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:14,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:15,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:15,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:15,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:15,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:17,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:17,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:13:17,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 72 treesize of output 135 [2024-11-09 18:13:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:17,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:13:19,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483061708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:19,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:19,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 37, 21] total 94 [2024-11-09 18:13:19,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38187544] [2024-11-09 18:13:19,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:19,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-09 18:13:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:19,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-09 18:13:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=8231, Unknown=0, NotChecked=0, Total=8742 [2024-11-09 18:13:19,118 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 94 states, 94 states have (on average 2.6382978723404253) internal successors, (248), 94 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) [2024-11-09 18:13:27,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:27,633 INFO L93 Difference]: Finished difference Result 336 states and 367 transitions. [2024-11-09 18:13:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-09 18:13:27,634 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.6382978723404253) internal successors, (248), 94 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) Word has length 91 [2024-11-09 18:13:27,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:27,635 INFO L225 Difference]: With dead ends: 336 [2024-11-09 18:13:27,636 INFO L226 Difference]: Without dead ends: 275 [2024-11-09 18:13:27,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7518 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1980, Invalid=28470, Unknown=0, NotChecked=0, Total=30450 [2024-11-09 18:13:27,637 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 295 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:27,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 2733 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 18:13:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-09 18:13:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 213. [2024-11-09 18:13:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.0754716981132075) internal successors, (228), 212 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2024-11-09 18:13:27,689 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 91 [2024-11-09 18:13:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:27,689 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2024-11-09 18:13:27,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.6382978723404253) internal successors, (248), 94 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) [2024-11-09 18:13:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2024-11-09 18:13:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 18:13:27,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:27,690 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:27,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:27,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:27,891 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:27,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:27,892 INFO L85 PathProgramCache]: Analyzing trace with hash 202774161, now seen corresponding path program 19 times [2024-11-09 18:13:27,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:27,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701595911] [2024-11-09 18:13:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:27,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 58 proven. 70 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-09 18:13:28,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:28,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701595911] [2024-11-09 18:13:28,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701595911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:28,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908902953] [2024-11-09 18:13:28,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:13:28,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:28,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:28,145 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:28,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:13:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:28,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 18:13:28,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-09 18:13:28,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-09 18:13:28,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908902953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:28,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:28,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-09 18:13:28,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667651713] [2024-11-09 18:13:28,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:28,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:13:28,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:28,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:13:28,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:13:28,631 INFO L87 Difference]: Start difference. First operand 213 states and 228 transitions. Second operand has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:28,890 INFO L93 Difference]: Finished difference Result 335 states and 358 transitions. [2024-11-09 18:13:28,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 18:13:28,891 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 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 93 [2024-11-09 18:13:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:28,892 INFO L225 Difference]: With dead ends: 335 [2024-11-09 18:13:28,892 INFO L226 Difference]: Without dead ends: 141 [2024-11-09 18:13:28,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 161 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 18:13:28,893 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 207 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:28,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 242 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-09 18:13:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 134. [2024-11-09 18:13:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0526315789473684) internal successors, (140), 133 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 140 transitions. [2024-11-09 18:13:28,918 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 140 transitions. Word has length 93 [2024-11-09 18:13:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:28,918 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 140 transitions. [2024-11-09 18:13:28,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 140 transitions. [2024-11-09 18:13:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 18:13:28,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:28,919 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:28,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:29,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:29,120 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:29,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash -462123342, now seen corresponding path program 20 times [2024-11-09 18:13:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:29,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404537157] [2024-11-09 18:13:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 18:13:29,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404537157] [2024-11-09 18:13:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404537157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363189914] [2024-11-09 18:13:29,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:13:29,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:29,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:29,398 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:29,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 18:13:29,489 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:13:29,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:29,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 18:13:29,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 18:13:29,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 18:13:29,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363189914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:29,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:29,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-09 18:13:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883209764] [2024-11-09 18:13:29,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:29,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:13:29,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:29,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:13:29,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:13:29,789 INFO L87 Difference]: Start difference. First operand 134 states and 140 transitions. Second operand has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:30,067 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2024-11-09 18:13:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 18:13:30,067 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 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 95 [2024-11-09 18:13:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:30,068 INFO L225 Difference]: With dead ends: 141 [2024-11-09 18:13:30,068 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 18:13:30,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 164 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=346, Invalid=1136, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 18:13:30,068 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 158 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:30,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 422 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 18:13:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-09 18:13:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2024-11-09 18:13:30,088 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 95 [2024-11-09 18:13:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:30,088 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2024-11-09 18:13:30,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:13:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2024-11-09 18:13:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 18:13:30,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:30,089 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:30,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:30,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 18:13:30,290 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:30,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:30,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1312677905, now seen corresponding path program 21 times [2024-11-09 18:13:30,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:30,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444808010] [2024-11-09 18:13:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:30,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 30 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:36,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444808010] [2024-11-09 18:13:36,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444808010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832920150] [2024-11-09 18:13:36,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:13:36,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:36,439 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:36,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 18:13:36,586 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 18:13:36,586 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:36,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 153 conjuncts are in the unsatisfiable core [2024-11-09 18:13:36,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:36,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1