./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/loops-crafted-1/mono-crafted_6.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 a0e1e4b700be1f29c3e51242b4a74b80feb10d65ba6788a48a42ab27b5c7017d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:50:56,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:50:56,341 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:50:56,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:50:56,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:50:56,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:50:56,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:50:56,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:50:56,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:50:56,371 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:50:56,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:50:56,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:50:56,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:50:56,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:50:56,373 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:50:56,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:50:56,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:50:56,374 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:50:56,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:50:56,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:50:56,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:50:56,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:50:56,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:50:56,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:50:56,380 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:50:56,380 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:50:56,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:50:56,381 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:50:56,381 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:50:56,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:50:56,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:50:56,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:50:56,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:50:56,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:50:56,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:50:56,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:50:56,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:50:56,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:50:56,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:50:56,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:50:56,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:50:56,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:50:56,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e1e4b700be1f29c3e51242b4a74b80feb10d65ba6788a48a42ab27b5c7017d [2024-11-16 06:50:56,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:50:56,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:50:56,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:50:56,657 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:50:56,658 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:50:56,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c [2024-11-16 06:50:58,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:50:58,302 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:50:58,303 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c [2024-11-16 06:50:58,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f3d86ec/9cbcc639f98a4e6c9c42ca621c83b89b/FLAG7cbcf94a9 [2024-11-16 06:50:58,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f3d86ec/9cbcc639f98a4e6c9c42ca621c83b89b [2024-11-16 06:50:58,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:50:58,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:50:58,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:50:58,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:50:58,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:50:58,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7732c9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58, skipping insertion in model container [2024-11-16 06:50:58,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,357 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:50:58,522 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/loops-crafted-1/mono-crafted_6.c[318,331] [2024-11-16 06:50:58,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:50:58,542 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:50:58,551 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/loops-crafted-1/mono-crafted_6.c[318,331] [2024-11-16 06:50:58,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:50:58,584 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:50:58,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58 WrapperNode [2024-11-16 06:50:58,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:50:58,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:50:58,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:50:58,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:50:58,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,600 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,617 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-11-16 06:50:58,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:50:58,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:50:58,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:50:58,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:50:58,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,644 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 06:50:58,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,646 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:50:58,649 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:50:58,650 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:50:58,650 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:50:58,651 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (1/1) ... [2024-11-16 06:50:58,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:50:58,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:58,680 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) [2024-11-16 06:50:58,686 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 [2024-11-16 06:50:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:50:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:50:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:50:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:50:58,779 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:50:58,781 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:50:58,902 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-16 06:50:58,903 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:50:58,917 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:50:58,917 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:50:58,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:58 BoogieIcfgContainer [2024-11-16 06:50:58,918 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:50:58,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:50:58,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:50:58,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:50:58,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:50:58" (1/3) ... [2024-11-16 06:50:58,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acca073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:50:58, skipping insertion in model container [2024-11-16 06:50:58,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:58" (2/3) ... [2024-11-16 06:50:58,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acca073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:50:58, skipping insertion in model container [2024-11-16 06:50:58,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:58" (3/3) ... [2024-11-16 06:50:58,925 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_6.c [2024-11-16 06:50:58,939 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:50:58,939 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:50:58,985 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:50:58,990 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;@63f4c783, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:50:58,991 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:50:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 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) [2024-11-16 06:50:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 06:50:58,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:58,999 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:59,000 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:59,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1421100241, now seen corresponding path program 1 times [2024-11-16 06:50:59,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935239528] [2024-11-16 06:50:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:59,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:59,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935239528] [2024-11-16 06:50:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935239528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:59,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:50:59,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897898511] [2024-11-16 06:50:59,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:59,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:50:59,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:59,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:50:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:50:59,166 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:59,178 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-16 06:50:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:50:59,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-16 06:50:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:59,186 INFO L225 Difference]: With dead ends: 26 [2024-11-16 06:50:59,186 INFO L226 Difference]: Without dead ends: 12 [2024-11-16 06:50:59,188 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 [2024-11-16 06:50:59,191 INFO L432 NwaCegarLoop]: 18 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, 18 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 [2024-11-16 06:50:59,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-16 06:50:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-16 06:50:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-16 06:50:59,219 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2024-11-16 06:50:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:59,220 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-16 06:50:59,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-16 06:50:59,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-16 06:50:59,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:59,221 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:59,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:50:59,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:59,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:59,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1127461957, now seen corresponding path program 1 times [2024-11-16 06:50:59,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:59,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831435102] [2024-11-16 06:50:59,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:59,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:59,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:59,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831435102] [2024-11-16 06:50:59,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831435102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:59,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:59,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:50:59,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374915715] [2024-11-16 06:50:59,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:59,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:50:59,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:50:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:59,304 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:59,324 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2024-11-16 06:50:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:50:59,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-16 06:50:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:59,326 INFO L225 Difference]: With dead ends: 25 [2024-11-16 06:50:59,326 INFO L226 Difference]: Without dead ends: 15 [2024-11-16 06:50:59,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:59,328 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:59,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-16 06:50:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-16 06:50:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-16 06:50:59,333 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2024-11-16 06:50:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:59,333 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-16 06:50:59,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-16 06:50:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:50:59,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:59,334 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:59,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:50:59,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:59,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:59,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1350137030, now seen corresponding path program 1 times [2024-11-16 06:50:59,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:59,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706134391] [2024-11-16 06:50:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:59,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706134391] [2024-11-16 06:50:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706134391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147838656] [2024-11-16 06:50:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:59,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:59,441 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) [2024-11-16 06:50:59,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:50:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:59,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:50:59,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:59,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147838656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:59,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:59,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 06:50:59,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039072811] [2024-11-16 06:50:59,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:59,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:50:59,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:50:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:50:59,684 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2024-11-16 06:50:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:59,737 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2024-11-16 06:50:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:50:59,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 11 [2024-11-16 06:50:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:59,740 INFO L225 Difference]: With dead ends: 33 [2024-11-16 06:50:59,740 INFO L226 Difference]: Without dead ends: 23 [2024-11-16 06:50:59,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:50:59,743 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:59,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-16 06:50:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-16 06:50:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-16 06:50:59,754 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2024-11-16 06:50:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:59,754 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-16 06:50:59,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2024-11-16 06:50:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-16 06:50:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-16 06:50:59,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:59,756 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:59,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:50:59,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:59,960 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:59,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1454698232, now seen corresponding path program 1 times [2024-11-16 06:50:59,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:59,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634058043] [2024-11-16 06:50:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:59,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:51:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634058043] [2024-11-16 06:51:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634058043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559167000] [2024-11-16 06:51:00,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:00,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:00,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:00,081 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) [2024-11-16 06:51:00,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:51:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:00,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:51:00,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:51:00,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:51:00,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559167000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:00,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:00,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-16 06:51:00,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522336375] [2024-11-16 06:51:00,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:00,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 06:51:00,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:00,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 06:51:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:51:00,239 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:00,295 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-11-16 06:51:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:51:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 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 19 [2024-11-16 06:51:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:00,297 INFO L225 Difference]: With dead ends: 51 [2024-11-16 06:51:00,297 INFO L226 Difference]: Without dead ends: 38 [2024-11-16 06:51:00,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:51:00,298 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:00,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:51:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-16 06:51:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-16 06:51:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-16 06:51:00,307 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 19 [2024-11-16 06:51:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:00,308 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-16 06:51:00,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-16 06:51:00,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 06:51:00,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:00,310 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:00,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:51:00,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 06:51:00,515 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:00,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1840411771, now seen corresponding path program 1 times [2024-11-16 06:51:00,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:00,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679104782] [2024-11-16 06:51:00,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:00,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 06:51:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679104782] [2024-11-16 06:51:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679104782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:00,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285034022] [2024-11-16 06:51:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:00,695 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) [2024-11-16 06:51:00,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:51:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:00,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 06:51:00,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 06:51:00,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 06:51:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285034022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:00,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:00,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-16 06:51:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359766700] [2024-11-16 06:51:00,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:00,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 06:51:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 06:51:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:51:00,877 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:00,926 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2024-11-16 06:51:00,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:51:00,927 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-16 06:51:00,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:00,928 INFO L225 Difference]: With dead ends: 80 [2024-11-16 06:51:00,928 INFO L226 Difference]: Without dead ends: 53 [2024-11-16 06:51:00,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:51:00,929 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:00,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:51:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-16 06:51:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-16 06:51:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-16 06:51:00,937 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 37 [2024-11-16 06:51:00,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:00,937 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-16 06:51:00,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-16 06:51:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 06:51:00,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:00,939 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 8, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:00,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:51:01,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:01,144 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:01,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:01,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1342671514, now seen corresponding path program 2 times [2024-11-16 06:51:01,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:01,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927469994] [2024-11-16 06:51:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 99 proven. 108 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 06:51:01,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927469994] [2024-11-16 06:51:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927469994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:01,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93719226] [2024-11-16 06:51:01,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:51:01,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:01,401 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) [2024-11-16 06:51:01,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:51:01,458 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:51:01,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:01,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:51:01,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 99 proven. 108 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 06:51:01,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 99 proven. 108 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 06:51:01,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93719226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:01,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:01,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-16 06:51:01,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105634501] [2024-11-16 06:51:01,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:01,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 06:51:01,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 06:51:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-16 06:51:01,770 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:01,840 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2024-11-16 06:51:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 06:51:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 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 52 [2024-11-16 06:51:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:01,842 INFO L225 Difference]: With dead ends: 110 [2024-11-16 06:51:01,842 INFO L226 Difference]: Without dead ends: 83 [2024-11-16 06:51:01,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-16 06:51:01,843 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:01,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:51:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-16 06:51:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-16 06:51:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 82 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2024-11-16 06:51:01,852 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 52 [2024-11-16 06:51:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:01,852 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2024-11-16 06:51:01,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2024-11-16 06:51:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 06:51:01,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:01,854 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 18, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:01,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:51:02,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:02,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:02,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1622215482, now seen corresponding path program 3 times [2024-11-16 06:51:02,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:02,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806710207] [2024-11-16 06:51:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 209 proven. 513 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 06:51:02,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:02,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806710207] [2024-11-16 06:51:02,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806710207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:02,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84190898] [2024-11-16 06:51:02,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:51:02,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:02,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:02,657 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) [2024-11-16 06:51:02,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:51:02,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 06:51:02,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:02,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:51:02,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 112 proven. 3 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-11-16 06:51:02,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 112 proven. 3 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-11-16 06:51:02,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84190898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:02,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:02,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 4, 4] total 25 [2024-11-16 06:51:02,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804106729] [2024-11-16 06:51:02,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:02,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 06:51:02,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 06:51:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:51:02,819 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:02,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:02,929 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2024-11-16 06:51:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:51:02,932 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 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 82 [2024-11-16 06:51:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:02,933 INFO L225 Difference]: With dead ends: 128 [2024-11-16 06:51:02,933 INFO L226 Difference]: Without dead ends: 101 [2024-11-16 06:51:02,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:51:02,935 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:02,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 60 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:51:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-16 06:51:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-16 06:51:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.12) internal successors, (112), 100 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) [2024-11-16 06:51:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2024-11-16 06:51:02,949 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 82 [2024-11-16 06:51:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:02,950 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2024-11-16 06:51:02,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2024-11-16 06:51:02,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-16 06:51:02,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:02,952 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 19, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:02,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:51:03,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:03,153 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:03,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1183115518, now seen corresponding path program 4 times [2024-11-16 06:51:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:03,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938484232] [2024-11-16 06:51:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 400 proven. 570 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-16 06:51:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938484232] [2024-11-16 06:51:03,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938484232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877871452] [2024-11-16 06:51:03,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:51:03,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:03,754 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) [2024-11-16 06:51:03,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:51:03,827 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:51:03,827 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:03,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 06:51:03,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 400 proven. 570 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-16 06:51:03,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 400 proven. 570 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-16 06:51:04,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877871452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:04,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:04,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2024-11-16 06:51:04,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471172845] [2024-11-16 06:51:04,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:04,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-16 06:51:04,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-16 06:51:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 06:51:04,684 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 43 states, 43 states have (on average 3.2093023255813953) internal successors, (138), 43 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:04,818 INFO L93 Difference]: Finished difference Result 206 states and 249 transitions. [2024-11-16 06:51:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-16 06:51:04,820 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.2093023255813953) internal successors, (138), 43 states have internal predecessors, (138), 0 states have call successors, (0), 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 100 [2024-11-16 06:51:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:04,824 INFO L225 Difference]: With dead ends: 206 [2024-11-16 06:51:04,824 INFO L226 Difference]: Without dead ends: 164 [2024-11-16 06:51:04,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 06:51:04,826 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:04,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:51:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-16 06:51:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-16 06:51:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0736196319018405) internal successors, (175), 163 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2024-11-16 06:51:04,838 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 100 [2024-11-16 06:51:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:04,838 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2024-11-16 06:51:04,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.2093023255813953) internal successors, (138), 43 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2024-11-16 06:51:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-16 06:51:04,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:04,841 INFO L215 NwaCegarLoop]: trace histogram [48, 47, 40, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:04,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:51:05,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:05,045 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:05,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:05,045 INFO L85 PathProgramCache]: Analyzing trace with hash -594585015, now seen corresponding path program 5 times [2024-11-16 06:51:05,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:05,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647904518] [2024-11-16 06:51:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:05,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 820 proven. 2460 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-16 06:51:06,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:06,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647904518] [2024-11-16 06:51:06,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647904518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:06,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200688530] [2024-11-16 06:51:06,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:51:06,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:06,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:06,986 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) [2024-11-16 06:51:06,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:51:07,102 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-11-16 06:51:07,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:07,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 06:51:07,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1852 proven. 1143 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-11-16 06:51:08,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1852 proven. 1143 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-11-16 06:51:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200688530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:10,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:10,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 30, 30] total 99 [2024-11-16 06:51:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951978291] [2024-11-16 06:51:10,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:10,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-16 06:51:10,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:10,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-16 06:51:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2024-11-16 06:51:10,302 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand has 99 states, 99 states have (on average 3.272727272727273) internal successors, (324), 99 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:10,959 INFO L93 Difference]: Finished difference Result 474 states and 603 transitions. [2024-11-16 06:51:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-16 06:51:10,960 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 3.272727272727273) internal successors, (324), 99 states have internal predecessors, (324), 0 states have call successors, (0), 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 163 [2024-11-16 06:51:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:10,962 INFO L225 Difference]: With dead ends: 474 [2024-11-16 06:51:10,962 INFO L226 Difference]: Without dead ends: 432 [2024-11-16 06:51:10,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2024-11-16 06:51:10,965 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 270 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:10,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 189 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:51:10,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-16 06:51:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-16 06:51:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.1508120649651972) internal successors, (496), 431 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 496 transitions. [2024-11-16 06:51:10,990 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 496 transitions. Word has length 163 [2024-11-16 06:51:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:10,991 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 496 transitions. [2024-11-16 06:51:10,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 3.272727272727273) internal successors, (324), 99 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 496 transitions. [2024-11-16 06:51:10,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-16 06:51:10,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:10,998 INFO L215 NwaCegarLoop]: trace histogram [102, 101, 60, 60, 56, 41, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:11,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 06:51:11,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:11,203 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:11,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -266890490, now seen corresponding path program 6 times [2024-11-16 06:51:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167583034] [2024-11-16 06:51:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18892 backedges. 7518 proven. 2583 refuted. 0 times theorem prover too weak. 8791 trivial. 0 not checked. [2024-11-16 06:51:14,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:14,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167583034] [2024-11-16 06:51:14,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167583034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:14,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676942020] [2024-11-16 06:51:14,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:51:14,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:14,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:14,008 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) [2024-11-16 06:51:14,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:51:14,102 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-16 06:51:14,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:14,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:51:14,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18892 backedges. 1857 proven. 42 refuted. 0 times theorem prover too weak. 16993 trivial. 0 not checked. [2024-11-16 06:51:14,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 18892 backedges. 1857 proven. 42 refuted. 0 times theorem prover too weak. 16993 trivial. 0 not checked. [2024-11-16 06:51:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676942020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:14,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:14,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 7, 7] total 54 [2024-11-16 06:51:14,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243140921] [2024-11-16 06:51:14,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:14,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-16 06:51:14,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:14,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-16 06:51:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:51:14,504 INFO L87 Difference]: Start difference. First operand 432 states and 496 transitions. Second operand has 54 states, 54 states have (on average 3.5925925925925926) internal successors, (194), 54 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:14,689 INFO L93 Difference]: Finished difference Result 772 states and 919 transitions. [2024-11-16 06:51:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 06:51:14,689 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.5925925925925926) internal successors, (194), 54 states have internal predecessors, (194), 0 states have call successors, (0), 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 431 [2024-11-16 06:51:14,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:14,691 INFO L225 Difference]: With dead ends: 772 [2024-11-16 06:51:14,691 INFO L226 Difference]: Without dead ends: 465 [2024-11-16 06:51:14,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:51:14,694 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:14,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 93 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:51:14,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-16 06:51:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2024-11-16 06:51:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.165948275862069) internal successors, (541), 464 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 541 transitions. [2024-11-16 06:51:14,718 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 541 transitions. Word has length 431 [2024-11-16 06:51:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:14,719 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 541 transitions. [2024-11-16 06:51:14,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.5925925925925926) internal successors, (194), 54 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 541 transitions. [2024-11-16 06:51:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-16 06:51:14,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:14,727 INFO L215 NwaCegarLoop]: trace histogram [109, 108, 66, 66, 56, 42, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:14,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 06:51:14,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 06:51:14,928 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:14,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1816283131, now seen corresponding path program 7 times [2024-11-16 06:51:14,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:14,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310954800] [2024-11-16 06:51:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:14,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 8471 proven. 2709 refuted. 0 times theorem prover too weak. 10660 trivial. 0 not checked. [2024-11-16 06:51:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310954800] [2024-11-16 06:51:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310954800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38170200] [2024-11-16 06:51:17,522 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:51:17,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:17,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:17,523 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) [2024-11-16 06:51:17,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:51:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:17,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-16 06:51:17,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 8471 proven. 2709 refuted. 0 times theorem prover too weak. 10660 trivial. 0 not checked. [2024-11-16 06:51:17,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 8471 proven. 2709 refuted. 0 times theorem prover too weak. 10660 trivial. 0 not checked. [2024-11-16 06:51:19,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38170200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:19,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:19,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 89 [2024-11-16 06:51:19,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913341741] [2024-11-16 06:51:19,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:19,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-16 06:51:19,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-16 06:51:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2024-11-16 06:51:19,882 INFO L87 Difference]: Start difference. First operand 465 states and 541 transitions. Second operand has 89 states, 89 states have (on average 3.101123595505618) internal successors, (276), 89 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:20,119 INFO L93 Difference]: Finished difference Result 934 states and 1130 transitions. [2024-11-16 06:51:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-16 06:51:20,120 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.101123595505618) internal successors, (276), 89 states have internal predecessors, (276), 0 states have call successors, (0), 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 464 [2024-11-16 06:51:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:20,122 INFO L225 Difference]: With dead ends: 934 [2024-11-16 06:51:20,122 INFO L226 Difference]: Without dead ends: 597 [2024-11-16 06:51:20,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2024-11-16 06:51:20,126 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:20,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:51:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-16 06:51:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2024-11-16 06:51:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.1291946308724832) internal successors, (673), 596 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 673 transitions. [2024-11-16 06:51:20,151 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 673 transitions. Word has length 464 [2024-11-16 06:51:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:20,152 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 673 transitions. [2024-11-16 06:51:20,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.101123595505618) internal successors, (276), 89 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 673 transitions. [2024-11-16 06:51:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-16 06:51:20,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:20,162 INFO L215 NwaCegarLoop]: trace histogram [153, 152, 86, 66, 66, 56, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:20,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:51:20,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:20,366 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:20,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1319591237, now seen corresponding path program 8 times [2024-11-16 06:51:20,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:20,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769364473] [2024-11-16 06:51:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 39022 backedges. 17139 proven. 11223 refuted. 0 times theorem prover too weak. 10660 trivial. 0 not checked. [2024-11-16 06:51:28,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:28,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769364473] [2024-11-16 06:51:28,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769364473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:28,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559704988] [2024-11-16 06:51:28,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:51:28,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:28,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:28,333 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) [2024-11-16 06:51:28,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 06:51:28,560 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:51:28,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:28,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 174 conjuncts are in the unsatisfiable core [2024-11-16 06:51:28,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 39022 backedges. 17139 proven. 11223 refuted. 0 times theorem prover too weak. 10660 trivial. 0 not checked. [2024-11-16 06:51:28,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 39022 backedges. 17139 proven. 11223 refuted. 0 times theorem prover too weak. 10660 trivial. 0 not checked. [2024-11-16 06:51:36,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559704988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:36,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:36,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 177 [2024-11-16 06:51:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403825481] [2024-11-16 06:51:36,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:36,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2024-11-16 06:51:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2024-11-16 06:51:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2024-11-16 06:51:36,616 INFO L87 Difference]: Start difference. First operand 597 states and 673 transitions. Second operand has 177 states, 177 states have (on average 3.0508474576271185) internal successors, (540), 177 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:37,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:37,200 INFO L93 Difference]: Finished difference Result 1198 states and 1438 transitions. [2024-11-16 06:51:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2024-11-16 06:51:37,201 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 3.0508474576271185) internal successors, (540), 177 states have internal predecessors, (540), 0 states have call successors, (0), 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 596 [2024-11-16 06:51:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:37,205 INFO L225 Difference]: With dead ends: 1198 [2024-11-16 06:51:37,205 INFO L226 Difference]: Without dead ends: 861 [2024-11-16 06:51:37,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1104 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2024-11-16 06:51:37,208 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:37,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:51:37,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-16 06:51:37,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2024-11-16 06:51:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.0895348837209302) internal successors, (937), 860 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:37,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 937 transitions. [2024-11-16 06:51:37,230 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 937 transitions. Word has length 596 [2024-11-16 06:51:37,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:37,231 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 937 transitions. [2024-11-16 06:51:37,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 3.0508474576271185) internal successors, (540), 177 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 937 transitions. [2024-11-16 06:51:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-11-16 06:51:37,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:37,237 INFO L215 NwaCegarLoop]: trace histogram [241, 240, 174, 66, 66, 56, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:37,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 06:51:37,438 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,SelfDestructingSolverStorable11 [2024-11-16 06:51:37,438 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:37,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:37,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1752119355, now seen corresponding path program 9 times [2024-11-16 06:51:37,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:37,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901781284] [2024-11-16 06:51:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:37,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 90810 backedges. 34475 proven. 45675 refuted. 0 times theorem prover too weak. 10660 trivial. 0 not checked. [2024-11-16 06:52:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901781284] [2024-11-16 06:52:08,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901781284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333919087] [2024-11-16 06:52:08,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:52:08,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:08,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:08,005 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) [2024-11-16 06:52:08,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 06:52:08,153 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-16 06:52:08,153 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:08,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 06:52:08,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 90810 backedges. 8525 proven. 255 refuted. 0 times theorem prover too weak. 82030 trivial. 0 not checked. [2024-11-16 06:52:09,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 90810 backedges. 8525 proven. 255 refuted. 0 times theorem prover too weak. 82030 trivial. 0 not checked. [2024-11-16 06:52:10,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333919087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:10,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:10,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 13, 13] total 199 [2024-11-16 06:52:10,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046683688] [2024-11-16 06:52:10,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:10,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2024-11-16 06:52:10,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2024-11-16 06:52:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2024-11-16 06:52:10,888 INFO L87 Difference]: Start difference. First operand 861 states and 937 transitions. Second operand has 199 states, 199 states have (on average 3.2814070351758793) internal successors, (653), 199 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:12,279 INFO L93 Difference]: Finished difference Result 1261 states and 1450 transitions. [2024-11-16 06:52:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2024-11-16 06:52:12,280 INFO L78 Accepts]: Start accepts. Automaton has has 199 states, 199 states have (on average 3.2814070351758793) internal successors, (653), 199 states have internal predecessors, (653), 0 states have call successors, (0), 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 860 [2024-11-16 06:52:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:12,284 INFO L225 Difference]: With dead ends: 1261 [2024-11-16 06:52:12,284 INFO L226 Difference]: Without dead ends: 924 [2024-11-16 06:52:12,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1895 GetRequests, 1698 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2024-11-16 06:52:12,287 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:12,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 265 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:52:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-16 06:52:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 924. [2024-11-16 06:52:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 1.1094257854821234) internal successors, (1024), 923 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1024 transitions. [2024-11-16 06:52:12,310 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1024 transitions. Word has length 860 [2024-11-16 06:52:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:12,311 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1024 transitions. [2024-11-16 06:52:12,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 199 states, 199 states have (on average 3.2814070351758793) internal successors, (653), 199 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1024 transitions. [2024-11-16 06:52:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2024-11-16 06:52:12,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:12,318 INFO L215 NwaCegarLoop]: trace histogram [254, 253, 175, 78, 78, 56, 22, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:12,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 06:52:12,522 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,SelfDestructingSolverStorable12 [2024-11-16 06:52:12,523 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:12,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash 68594694, now seen corresponding path program 10 times [2024-11-16 06:52:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:12,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608175606] [2024-11-16 06:52:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:12,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat