/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 17:30:43,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 17:30:43,384 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 17:30:43,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 17:30:43,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 17:30:43,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 17:30:43,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 17:30:43,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 17:30:43,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 17:30:43,415 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 17:30:43,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 17:30:43,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 17:30:43,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 17:30:43,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 17:30:43,417 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 17:30:43,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 17:30:43,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 17:30:43,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 17:30:43,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 17:30:43,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 17:30:43,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 17:30:43,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 17:30:43,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 17:30:43,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 17:30:43,420 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 17:30:43,420 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 17:30:43,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 17:30:43,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 17:30:43,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 17:30:43,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 17:30:43,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 17:30:43,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 17:30:43,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 17:30:43,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 17:30:43,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 17:30:43,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 17:30:43,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 17:30:43,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 17:30:43,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 17:30:43,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 17:30:43,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 17:30:43,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 17:30:43,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 17:30:43,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 17:30:43,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 17:30:43,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 17:30:43,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 17:30:43,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 17:30:43,610 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 17:30:43,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c [2023-12-18 17:30:44,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 17:30:44,876 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 17:30:44,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c [2023-12-18 17:30:44,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe730f42/933c0424757e4a57b84fb18367f119a7/FLAGd6b828c23 [2023-12-18 17:30:44,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe730f42/933c0424757e4a57b84fb18367f119a7 [2023-12-18 17:30:44,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 17:30:44,893 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 17:30:44,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 17:30:44,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 17:30:44,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 17:30:44,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:30:44" (1/1) ... [2023-12-18 17:30:44,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31924969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:44, skipping insertion in model container [2023-12-18 17:30:44,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:30:44" (1/1) ... [2023-12-18 17:30:44,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 17:30:45,007 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c[991,1004] [2023-12-18 17:30:45,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 17:30:45,018 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 17:30:45,029 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c[991,1004] [2023-12-18 17:30:45,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 17:30:45,038 INFO L206 MainTranslator]: Completed translation [2023-12-18 17:30:45,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45 WrapperNode [2023-12-18 17:30:45,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 17:30:45,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 17:30:45,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 17:30:45,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 17:30:45,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,064 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2023-12-18 17:30:45,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 17:30:45,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 17:30:45,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 17:30:45,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 17:30:45,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,095 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-18 17:30:45,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 17:30:45,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 17:30:45,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 17:30:45,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 17:30:45,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (1/1) ... [2023-12-18 17:30:45,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 17:30:45,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:30:45,132 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) [2023-12-18 17:30:45,146 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 [2023-12-18 17:30:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 17:30:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 17:30:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 17:30:45,234 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 17:30:45,235 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 17:30:45,372 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 17:30:45,396 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 17:30:45,396 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-18 17:30:45,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:30:45 BoogieIcfgContainer [2023-12-18 17:30:45,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 17:30:45,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 17:30:45,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 17:30:45,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 17:30:45,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:30:44" (1/3) ... [2023-12-18 17:30:45,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e0faa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:30:45, skipping insertion in model container [2023-12-18 17:30:45,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:30:45" (2/3) ... [2023-12-18 17:30:45,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e0faa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:30:45, skipping insertion in model container [2023-12-18 17:30:45,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:30:45" (3/3) ... [2023-12-18 17:30:45,405 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel.i.v+cfa-reducer.c [2023-12-18 17:30:45,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 17:30:45,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 17:30:45,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 17:30:45,461 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c3a7b6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 17:30:45,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 17:30:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-18 17:30:45,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:30:45,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:30:45,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:30:45,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:30:45,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1284800003, now seen corresponding path program 1 times [2023-12-18 17:30:45,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:30:45,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705194844] [2023-12-18 17:30:45,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:45,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:30:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:30:45,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:30:45,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705194844] [2023-12-18 17:30:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705194844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 17:30:45,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 17:30:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 17:30:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428896187] [2023-12-18 17:30:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 17:30:45,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 17:30:45,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:30:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 17:30:45,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 17:30:45,687 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:30:45,708 INFO L93 Difference]: Finished difference Result 23 states and 33 transitions. [2023-12-18 17:30:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 17:30:45,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-12-18 17:30:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:30:45,714 INFO L225 Difference]: With dead ends: 23 [2023-12-18 17:30:45,714 INFO L226 Difference]: Without dead ends: 11 [2023-12-18 17:30:45,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 17:30:45,718 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:30:45,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:30:45,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-18 17:30:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-18 17:30:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-12-18 17:30:45,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2023-12-18 17:30:45,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:30:45,739 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-12-18 17:30:45,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-18 17:30:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-18 17:30:45,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:30:45,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:30:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 17:30:45,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:30:45,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:30:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1330956527, now seen corresponding path program 1 times [2023-12-18 17:30:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:30:45,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124675714] [2023-12-18 17:30:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:45,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:30:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:30:45,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:30:45,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124675714] [2023-12-18 17:30:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124675714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:30:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160317199] [2023-12-18 17:30:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:45,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:45,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:30:45,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:30:45,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 17:30:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:45,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 17:30:45,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:30:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:30:45,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:30:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:30:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160317199] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:30:45,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:30:45,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-18 17:30:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531825411] [2023-12-18 17:30:45,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:30:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 17:30:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:30:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 17:30:45,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 17:30:45,938 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:30:45,962 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2023-12-18 17:30:45,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 17:30:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-18 17:30:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:30:45,964 INFO L225 Difference]: With dead ends: 22 [2023-12-18 17:30:45,964 INFO L226 Difference]: Without dead ends: 14 [2023-12-18 17:30:45,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 17:30:45,966 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:30:45,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:30:45,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-18 17:30:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-18 17:30:45,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-18 17:30:45,968 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2023-12-18 17:30:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:30:45,969 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-18 17:30:45,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-18 17:30:45,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-18 17:30:45,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:30:45,969 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:30:45,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 17:30:46,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:46,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:30:46,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:30:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash -533059843, now seen corresponding path program 2 times [2023-12-18 17:30:46,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:30:46,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36901302] [2023-12-18 17:30:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:46,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:30:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 17:30:46,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:30:46,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36901302] [2023-12-18 17:30:46,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36901302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 17:30:46,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 17:30:46,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 17:30:46,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266699239] [2023-12-18 17:30:46,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 17:30:46,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 17:30:46,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:30:46,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 17:30:46,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 17:30:46,377 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:30:46,418 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-12-18 17:30:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 17:30:46,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-18 17:30:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:30:46,419 INFO L225 Difference]: With dead ends: 19 [2023-12-18 17:30:46,419 INFO L226 Difference]: Without dead ends: 16 [2023-12-18 17:30:46,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-18 17:30:46,420 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:30:46,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:30:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-18 17:30:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-18 17:30:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-12-18 17:30:46,422 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2023-12-18 17:30:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:30:46,423 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-12-18 17:30:46,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-18 17:30:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-18 17:30:46,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:30:46,423 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:30:46,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 17:30:46,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:30:46,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:30:46,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1171489088, now seen corresponding path program 1 times [2023-12-18 17:30:46,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:30:46,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169179196] [2023-12-18 17:30:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:46,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:30:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:30:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:30:46,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169179196] [2023-12-18 17:30:46,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169179196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:30:46,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722898682] [2023-12-18 17:30:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:46,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:46,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:30:46,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:30:46,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 17:30:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:46,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 17:30:46,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:30:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:30:46,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:30:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:30:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722898682] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:30:46,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:30:46,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-18 17:30:46,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775542165] [2023-12-18 17:30:46,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:30:46,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-18 17:30:46,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:30:46,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-18 17:30:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-18 17:30:46,682 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:30:46,696 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2023-12-18 17:30:46,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 17:30:46,696 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-18 17:30:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:30:46,697 INFO L225 Difference]: With dead ends: 32 [2023-12-18 17:30:46,697 INFO L226 Difference]: Without dead ends: 22 [2023-12-18 17:30:46,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-18 17:30:46,698 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:30:46,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:30:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-18 17:30:46,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-18 17:30:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-12-18 17:30:46,701 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2023-12-18 17:30:46,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:30:46,701 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-12-18 17:30:46,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:46,701 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-12-18 17:30:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-18 17:30:46,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:30:46,702 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:30:46,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 17:30:46,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-18 17:30:46,908 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:30:46,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:30:46,908 INFO L85 PathProgramCache]: Analyzing trace with hash -795285952, now seen corresponding path program 2 times [2023-12-18 17:30:46,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:30:46,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156916978] [2023-12-18 17:30:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:46,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:30:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:30:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:30:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156916978] [2023-12-18 17:30:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156916978] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:30:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220551596] [2023-12-18 17:30:47,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 17:30:47,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:47,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:30:47,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:30:47,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 17:30:47,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 17:30:47,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:30:47,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 17:30:47,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:30:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:30:47,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:30:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:30:47,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220551596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:30:47,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:30:47,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-18 17:30:47,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392490828] [2023-12-18 17:30:47,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:30:47,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-18 17:30:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:30:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-18 17:30:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-18 17:30:47,433 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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) [2023-12-18 17:30:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:30:47,460 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2023-12-18 17:30:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 17:30:47,460 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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 21 [2023-12-18 17:30:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:30:47,466 INFO L225 Difference]: With dead ends: 44 [2023-12-18 17:30:47,466 INFO L226 Difference]: Without dead ends: 34 [2023-12-18 17:30:47,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-18 17:30:47,467 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:30:47,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:30:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-18 17:30:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-18 17:30:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2023-12-18 17:30:47,470 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 21 [2023-12-18 17:30:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:30:47,471 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2023-12-18 17:30:47,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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) [2023-12-18 17:30:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2023-12-18 17:30:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-18 17:30:47,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:30:47,471 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:30:47,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-18 17:30:47,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:47,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:30:47,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:30:47,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1216795968, now seen corresponding path program 3 times [2023-12-18 17:30:47,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:30:47,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739524126] [2023-12-18 17:30:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:47,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:30:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:30:48,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:30:48,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739524126] [2023-12-18 17:30:48,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739524126] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:30:48,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738394161] [2023-12-18 17:30:48,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 17:30:48,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:48,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:30:48,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:30:48,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 17:30:48,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-18 17:30:48,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:30:48,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 17:30:48,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:30:48,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-18 17:30:48,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 17:30:48,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-12-18 17:30:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-18 17:30:48,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:30:48,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-12-18 17:30:48,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-12-18 17:30:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-18 17:30:48,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738394161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:30:48,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:30:48,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 34 [2023-12-18 17:30:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224288499] [2023-12-18 17:30:48,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:30:48,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-18 17:30:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:30:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-18 17:30:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 17:30:48,400 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:30:48,575 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2023-12-18 17:30:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-18 17:30:48,576 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-18 17:30:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:30:48,576 INFO L225 Difference]: With dead ends: 51 [2023-12-18 17:30:48,576 INFO L226 Difference]: Without dead ends: 39 [2023-12-18 17:30:48,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=383, Invalid=1177, Unknown=0, NotChecked=0, Total=1560 [2023-12-18 17:30:48,577 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:30:48,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:30:48,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-18 17:30:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-18 17:30:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2023-12-18 17:30:48,582 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 33 [2023-12-18 17:30:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:30:48,582 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2023-12-18 17:30:48,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2023-12-18 17:30:48,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-18 17:30:48,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:30:48,583 INFO L195 NwaCegarLoop]: trace histogram [23, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:30:48,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 17:30:48,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:48,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:30:48,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:30:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1248449946, now seen corresponding path program 4 times [2023-12-18 17:30:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:30:48,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118583970] [2023-12-18 17:30:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:48,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:30:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:30:49,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:30:49,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118583970] [2023-12-18 17:30:49,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118583970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:30:49,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672343975] [2023-12-18 17:30:49,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 17:30:49,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:49,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:30:49,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:30:49,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 17:30:49,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 17:30:49,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:30:49,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-18 17:30:49,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:30:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:30:49,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:30:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:30:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672343975] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:30:50,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:30:50,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2023-12-18 17:30:50,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134854324] [2023-12-18 17:30:50,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:30:50,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-18 17:30:50,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:30:50,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-18 17:30:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-18 17:30:50,081 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 51 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:30:50,125 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2023-12-18 17:30:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-18 17:30:50,126 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2023-12-18 17:30:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:30:50,126 INFO L225 Difference]: With dead ends: 78 [2023-12-18 17:30:50,126 INFO L226 Difference]: Without dead ends: 64 [2023-12-18 17:30:50,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-18 17:30:50,128 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:30:50,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:30:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-18 17:30:50,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-18 17:30:50,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:50,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2023-12-18 17:30:50,132 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 38 [2023-12-18 17:30:50,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:30:50,133 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2023-12-18 17:30:50,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:30:50,133 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2023-12-18 17:30:50,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 17:30:50,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:30:50,134 INFO L195 NwaCegarLoop]: trace histogram [48, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:30:50,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 17:30:50,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:50,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:30:50,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:30:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash 40994566, now seen corresponding path program 5 times [2023-12-18 17:30:50,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:30:50,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946094422] [2023-12-18 17:30:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:30:50,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:30:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:30:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:30:51,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:30:51,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946094422] [2023-12-18 17:30:51,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946094422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:30:51,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197176379] [2023-12-18 17:30:51,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 17:30:51,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:30:51,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:30:51,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:30:51,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 17:31:03,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-18 17:31:03,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:31:03,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-18 17:31:03,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:31:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:31:03,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:31:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:31:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197176379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:31:05,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:31:05,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2023-12-18 17:31:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512757683] [2023-12-18 17:31:05,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:31:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-18 17:31:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:31:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-18 17:31:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2023-12-18 17:31:05,366 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 101 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 100 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:31:05,473 INFO L93 Difference]: Finished difference Result 128 states and 179 transitions. [2023-12-18 17:31:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-18 17:31:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 100 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-18 17:31:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:31:05,474 INFO L225 Difference]: With dead ends: 128 [2023-12-18 17:31:05,474 INFO L226 Difference]: Without dead ends: 114 [2023-12-18 17:31:05,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2023-12-18 17:31:05,477 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:31:05,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:31:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-18 17:31:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-18 17:31:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2023-12-18 17:31:05,484 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 63 [2023-12-18 17:31:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:31:05,485 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2023-12-18 17:31:05,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 100 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2023-12-18 17:31:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-18 17:31:05,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:31:05,490 INFO L195 NwaCegarLoop]: trace histogram [98, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:31:05,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 17:31:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:31:05,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:31:05,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:31:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash -788789882, now seen corresponding path program 6 times [2023-12-18 17:31:05,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:31:05,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124324847] [2023-12-18 17:31:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:31:05,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:31:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:31:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4863 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:31:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:31:10,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124324847] [2023-12-18 17:31:10,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124324847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:31:10,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89890618] [2023-12-18 17:31:10,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 17:31:10,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:31:10,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:31:10,117 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) [2023-12-18 17:31:10,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 17:31:10,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-18 17:31:10,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:31:10,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-18 17:31:10,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:31:10,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-18 17:31:10,817 INFO L349 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2023-12-18 17:31:10,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 55 [2023-12-18 17:31:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4863 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-18 17:31:11,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:31:11,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-12-18 17:31:11,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 17:31:11,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 58 [2023-12-18 17:31:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4863 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-18 17:31:11,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89890618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:31:11,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:31:11,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 11, 11] total 118 [2023-12-18 17:31:11,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984002210] [2023-12-18 17:31:11,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:31:11,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2023-12-18 17:31:11,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:31:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2023-12-18 17:31:11,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5134, Invalid=8672, Unknown=0, NotChecked=0, Total=13806 [2023-12-18 17:31:11,755 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 118 states, 118 states have (on average 1.1271186440677967) internal successors, (133), 118 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:31:12,935 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2023-12-18 17:31:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-18 17:31:12,936 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 1.1271186440677967) internal successors, (133), 118 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-18 17:31:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:31:12,937 INFO L225 Difference]: With dead ends: 141 [2023-12-18 17:31:12,937 INFO L226 Difference]: Without dead ends: 123 [2023-12-18 17:31:12,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5293, Invalid=11477, Unknown=0, NotChecked=0, Total=16770 [2023-12-18 17:31:12,940 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:31:12,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 57 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:31:12,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-18 17:31:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-18 17:31:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2023-12-18 17:31:12,948 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 113 [2023-12-18 17:31:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:31:12,948 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2023-12-18 17:31:12,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 1.1271186440677967) internal successors, (133), 118 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2023-12-18 17:31:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 17:31:12,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:31:12,950 INFO L195 NwaCegarLoop]: trace histogram [99, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:31:12,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 17:31:13,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:31:13,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:31:13,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:31:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1201228838, now seen corresponding path program 7 times [2023-12-18 17:31:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:31:13,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297046532] [2023-12-18 17:31:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:31:13,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:31:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:31:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5006 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:31:17,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:31:17,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297046532] [2023-12-18 17:31:17,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297046532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:31:17,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429303151] [2023-12-18 17:31:17,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 17:31:17,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:31:17,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:31:17,467 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) [2023-12-18 17:31:17,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 17:31:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:31:17,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 101 conjunts are in the unsatisfiable core [2023-12-18 17:31:17,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:31:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5006 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:31:17,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:31:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5006 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:31:25,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429303151] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:31:25,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:31:25,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2023-12-18 17:31:25,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335414161] [2023-12-18 17:31:25,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:31:25,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2023-12-18 17:31:25,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:31:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2023-12-18 17:31:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2023-12-18 17:31:25,272 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 203 states, 203 states have (on average 1.0443349753694582) internal successors, (212), 202 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:31:25,564 INFO L93 Difference]: Finished difference Result 246 states and 348 transitions. [2023-12-18 17:31:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-18 17:31:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0443349753694582) internal successors, (212), 202 states have internal predecessors, (212), 0 states have call successors, (0), 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 122 [2023-12-18 17:31:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:31:25,566 INFO L225 Difference]: With dead ends: 246 [2023-12-18 17:31:25,566 INFO L226 Difference]: Without dead ends: 224 [2023-12-18 17:31:25,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2023-12-18 17:31:25,569 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:31:25,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:31:25,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-18 17:31:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-12-18 17:31:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.0089686098654709) internal successors, (225), 223 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2023-12-18 17:31:25,579 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 122 [2023-12-18 17:31:25,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:31:25,580 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2023-12-18 17:31:25,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0443349753694582) internal successors, (212), 202 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2023-12-18 17:31:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-18 17:31:25,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:31:25,582 INFO L195 NwaCegarLoop]: trace histogram [200, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:31:25,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 17:31:25,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-18 17:31:25,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:31:25,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:31:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash 254062226, now seen corresponding path program 8 times [2023-12-18 17:31:25,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:31:25,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189035349] [2023-12-18 17:31:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:31:25,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:31:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:31:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20156 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:31:42,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:31:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189035349] [2023-12-18 17:31:42,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189035349] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:31:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390685400] [2023-12-18 17:31:42,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 17:31:42,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:31:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:31:42,009 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) [2023-12-18 17:31:42,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 17:31:42,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 17:31:42,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:31:42,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 1899 conjuncts, 202 conjunts are in the unsatisfiable core [2023-12-18 17:31:42,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:31:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 20156 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:31:42,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:32:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 20156 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:32:13,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390685400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:32:13,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:32:13,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2023-12-18 17:32:13,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227735104] [2023-12-18 17:32:13,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:32:13,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2023-12-18 17:32:13,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:32:13,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2023-12-18 17:32:13,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81810, Invalid=81810, Unknown=0, NotChecked=0, Total=163620 [2023-12-18 17:32:13,737 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 405 states, 405 states have (on average 1.0222222222222221) internal successors, (414), 404 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:32:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:32:15,202 INFO L93 Difference]: Finished difference Result 448 states and 651 transitions. [2023-12-18 17:32:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2023-12-18 17:32:15,203 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.0222222222222221) internal successors, (414), 404 states have internal predecessors, (414), 0 states have call successors, (0), 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 223 [2023-12-18 17:32:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:32:15,206 INFO L225 Difference]: With dead ends: 448 [2023-12-18 17:32:15,206 INFO L226 Difference]: Without dead ends: 426 [2023-12-18 17:32:15,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=81810, Invalid=81810, Unknown=0, NotChecked=0, Total=163620 [2023-12-18 17:32:15,212 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 17:32:15,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 17:32:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-18 17:32:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2023-12-18 17:32:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.0047058823529411) internal successors, (427), 425 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:32:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 427 transitions. [2023-12-18 17:32:15,225 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 427 transitions. Word has length 223 [2023-12-18 17:32:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:32:15,225 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 427 transitions. [2023-12-18 17:32:15,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.0222222222222221) internal successors, (414), 404 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:32:15,226 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 427 transitions. [2023-12-18 17:32:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-18 17:32:15,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:32:15,229 INFO L195 NwaCegarLoop]: trace histogram [402, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:32:15,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-18 17:32:15,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:32:15,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:32:15,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:32:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash 246819602, now seen corresponding path program 9 times [2023-12-18 17:32:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:32:15,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77640397] [2023-12-18 17:32:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:32:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:32:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:33:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 81059 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:33:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:33:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77640397] [2023-12-18 17:33:17,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77640397] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:33:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724217922] [2023-12-18 17:33:17,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 17:33:17,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:33:17,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:33:17,316 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) [2023-12-18 17:33:17,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 17:33:17,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-18 17:33:17,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:33:17,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-18 17:33:17,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:33:18,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-18 17:33:22,461 INFO L349 Elim1Store]: treesize reduction 24, result has 86.4 percent of original size [2023-12-18 17:33:22,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 85 treesize of output 183 [2023-12-18 17:33:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 81059 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 81003 trivial. 0 not checked. [2023-12-18 17:33:23,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:33:40,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 103 [2023-12-18 17:33:40,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 17:33:40,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 198 [2023-12-18 17:33:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 81059 backedges. 0 proven. 53 refuted. 3 times theorem prover too weak. 81003 trivial. 0 not checked. [2023-12-18 17:33:41,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724217922] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:33:41,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:33:41,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [404, 19, 19] total 438 [2023-12-18 17:33:41,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992171749] [2023-12-18 17:33:41,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:33:41,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 438 states [2023-12-18 17:33:41,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:33:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 438 interpolants. [2023-12-18 17:33:41,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82071, Invalid=109332, Unknown=3, NotChecked=0, Total=191406 [2023-12-18 17:33:41,138 INFO L87 Difference]: Start difference. First operand 426 states and 427 transitions. Second operand has 438 states, 438 states have (on average 1.0342465753424657) internal successors, (453), 438 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:33:56,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-18 17:34:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:34:07,785 INFO L93 Difference]: Finished difference Result 473 states and 483 transitions. [2023-12-18 17:34:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 443 states. [2023-12-18 17:34:07,786 INFO L78 Accepts]: Start accepts. Automaton has has 438 states, 438 states have (on average 1.0342465753424657) internal successors, (453), 438 states have internal predecessors, (453), 0 states have call successors, (0), 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 425 [2023-12-18 17:34:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:34:07,788 INFO L225 Difference]: With dead ends: 473 [2023-12-18 17:34:07,788 INFO L226 Difference]: Without dead ends: 443 [2023-12-18 17:34:07,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1276 GetRequests, 815 SyntacticMatches, 1 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14739 ImplicationChecksByTransitivity, 76.4s TimeCoverageRelationStatistics Valid=82616, Invalid=130360, Unknown=6, NotChecked=0, Total=212982 [2023-12-18 17:34:07,798 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 66 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-18 17:34:07,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 91 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 738 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-12-18 17:34:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-12-18 17:34:07,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-12-18 17:34:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.004524886877828) internal successors, (444), 442 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:34:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2023-12-18 17:34:07,822 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 425 [2023-12-18 17:34:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:34:07,823 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2023-12-18 17:34:07,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 438 states, 438 states have (on average 1.0342465753424657) internal successors, (453), 438 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:34:07,823 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2023-12-18 17:34:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-18 17:34:07,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:34:07,828 INFO L195 NwaCegarLoop]: trace histogram [403, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:34:07,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 17:34:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-18 17:34:08,034 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:34:08,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:34:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash -797731010, now seen corresponding path program 10 times [2023-12-18 17:34:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:34:08,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79903138] [2023-12-18 17:34:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:34:08,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:34:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:35:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 81646 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-18 17:35:28,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:35:28,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79903138] [2023-12-18 17:35:28,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79903138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:35:28,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279733068] [2023-12-18 17:35:28,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 17:35:28,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:35:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:35:28,992 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) [2023-12-18 17:35:28,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 17:35:29,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 17:35:29,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:35:29,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 3766 conjuncts, 405 conjunts are in the unsatisfiable core [2023-12-18 17:35:29,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:35:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 81646 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-18 17:35:30,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:37:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 81646 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-18 17:37:44,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279733068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:37:44,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:37:44,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [405, 405, 405] total 810 [2023-12-18 17:37:44,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516702620] [2023-12-18 17:37:44,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:37:44,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 811 states [2023-12-18 17:37:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:37:44,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 811 interpolants. [2023-12-18 17:37:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328455, Invalid=328455, Unknown=0, NotChecked=0, Total=656910 [2023-12-18 17:37:44,258 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand has 811 states, 811 states have (on average 1.0110974106041923) internal successors, (820), 810 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:37:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:37:56,513 INFO L93 Difference]: Finished difference Result 886 states and 1292 transitions. [2023-12-18 17:37:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 810 states. [2023-12-18 17:37:56,514 INFO L78 Accepts]: Start accepts. Automaton has has 811 states, 811 states have (on average 1.0110974106041923) internal successors, (820), 810 states have internal predecessors, (820), 0 states have call successors, (0), 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 442 [2023-12-18 17:37:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:37:56,517 INFO L225 Difference]: With dead ends: 886 [2023-12-18 17:37:56,517 INFO L226 Difference]: Without dead ends: 848 [2023-12-18 17:37:56,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 809 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 185.9s TimeCoverageRelationStatistics Valid=328455, Invalid=328455, Unknown=0, NotChecked=0, Total=656910 [2023-12-18 17:37:56,543 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 17:37:56,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 17:37:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-12-18 17:37:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2023-12-18 17:37:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 1.0023612750885478) internal successors, (849), 847 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:37:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 849 transitions. [2023-12-18 17:37:56,562 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 849 transitions. Word has length 442 [2023-12-18 17:37:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:37:56,562 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 849 transitions. [2023-12-18 17:37:56,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 811 states, 811 states have (on average 1.0110974106041923) internal successors, (820), 810 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:37:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 849 transitions. [2023-12-18 17:37:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2023-12-18 17:37:56,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:37:56,568 INFO L195 NwaCegarLoop]: trace histogram [808, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:37:56,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 17:37:56,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-18 17:37:56,780 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:37:56,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:37:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash 721360298, now seen corresponding path program 11 times [2023-12-18 17:37:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:37:56,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323705891] [2023-12-18 17:37:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:37:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:37:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:43:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 327076 backedges. 0 proven. 326836 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-18 17:43:31,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:43:31,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323705891] [2023-12-18 17:43:31,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323705891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:43:31,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055714191] [2023-12-18 17:43:31,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 17:43:31,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:43:31,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:43:31,554 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:43:31,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Received shutdown request... [2023-12-18 17:45:05,361 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 17:45:05,377 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 17:45:06,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-18 17:45:06,578 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forcibly destroying the process [2023-12-18 17:45:06,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 137 [2023-12-18 17:45:06,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 17:45:06,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-18 17:45:06,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [810] total 810 [2023-12-18 17:45:06,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178291810] [2023-12-18 17:45:06,592 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-18 17:45:06,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 811 states [2023-12-18 17:45:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:45:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 811 interpolants. [2023-12-18 17:45:06,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328455, Invalid=328455, Unknown=0, NotChecked=0, Total=656910 [2023-12-18 17:45:06,667 INFO L87 Difference]: Start difference. First operand 848 states and 849 transitions. Second operand has 811 states, 811 states have (on average 1.0086313193588163) internal successors, (818), 810 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:45:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 17:45:06,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 809 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 163.3s TimeCoverageRelationStatistics Valid=328455, Invalid=328455, Unknown=0, NotChecked=0, Total=656910 [2023-12-18 17:45:06,700 INFO L413 NwaCegarLoop]: 0 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, 0 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 [2023-12-18 17:45:06,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:45:06,702 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 17:45:06,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 17:45:06,704 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (848states) and FLOYD_HOARE automaton (currently 2 states, 811 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-18 17:45:06,709 INFO L445 BasicCegarLoop]: Path program histogram: [11, 2, 1] [2023-12-18 17:45:06,711 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 17:45:06,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 05:45:06 BoogieIcfgContainer [2023-12-18 17:45:06,712 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 17:45:06,713 INFO L158 Benchmark]: Toolchain (without parser) took 861820.03ms. Allocated memory was 173.0MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 130.2MB in the beginning and 773.6MB in the end (delta: -643.5MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-18 17:45:06,713 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 173.0MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 17:45:06,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.73ms. Allocated memory is still 173.0MB. Free memory was 130.2MB in the beginning and 119.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 17:45:06,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.06ms. Allocated memory is still 173.0MB. Free memory was 119.2MB in the beginning and 117.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-18 17:45:06,713 INFO L158 Benchmark]: Boogie Preprocessor took 36.87ms. Allocated memory is still 173.0MB. Free memory was 117.5MB in the beginning and 115.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 17:45:06,713 INFO L158 Benchmark]: RCFGBuilder took 294.39ms. Allocated memory is still 173.0MB. Free memory was 115.5MB in the beginning and 104.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 17:45:06,714 INFO L158 Benchmark]: TraceAbstraction took 861313.22ms. Allocated memory was 173.0MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 103.2MB in the beginning and 773.6MB in the end (delta: -670.4MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-18 17:45:06,714 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 173.0MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 145.73ms. Allocated memory is still 173.0MB. Free memory was 130.2MB in the beginning and 119.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.06ms. Allocated memory is still 173.0MB. Free memory was 119.2MB in the beginning and 117.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.87ms. Allocated memory is still 173.0MB. Free memory was 117.5MB in the beginning and 115.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 294.39ms. Allocated memory is still 173.0MB. Free memory was 115.5MB in the beginning and 104.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 861313.22ms. Allocated memory was 173.0MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 103.2MB in the beginning and 773.6MB in the end (delta: -670.4MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 43). Cancelled while NwaCegarLoop was constructing difference of abstraction (848states) and FLOYD_HOARE automaton (currently 2 states, 811 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 861.3s, OverallIterations: 14, TraceHistogramMax: 808, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 42.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 532 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2766 IncrementalHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 104 mSDtfsCounter, 2766 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5181 GetRequests, 2137 SyntacticMatches, 3 SemanticMatches, 3041 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20165 ImplicationChecksByTransitivity, 486.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=848occurred in iteration=13, InterpolantAutomatonStates: 2211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 15.8s SatisfiabilityAnalysisTime, 702.4s InterpolantComputationTime, 3879 NumberOfCodeBlocks, 3385 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 5348 ConstructedInterpolants, 20 QuantifiedInterpolants, 14868 SizeOfPredicates, 32 NumberOfNonLiveVariables, 8288 ConjunctsInSsa, 896 ConjunctsInUnsatCore, 36 InterpolantComputations, 2 PerfectInterpolantSequences, 173674/910679 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown