/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:42:18,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:42:18,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:42:18,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:42:18,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:42:18,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:42:18,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:42:18,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:42:18,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:42:18,321 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:42:18,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:42:18,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:42:18,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:42:18,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:42:18,322 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:42:18,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:42:18,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:42:18,323 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:42:18,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:42:18,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:42:18,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:42:18,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:42:18,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:42:18,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:42:18,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:42:18,336 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:42:18,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:42:18,337 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:42:18,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:42:18,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:42:18,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:42:18,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:42:18,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:42:18,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:42:18,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:42:18,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:42:18,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:42:18,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:42:18,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:42:18,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:42:18,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:42:18,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:42:18,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:42:18,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:42:18,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:42:18,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:42:18,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:42:18,494 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:42:18,495 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:42:18,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:42:19,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:42:19,912 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:42:19,913 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:42:19,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f9411de/f06623fe42e34edea14d3cceaa7968ae/FLAGbb5d17c28 [2023-12-21 13:42:19,937 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f9411de/f06623fe42e34edea14d3cceaa7968ae [2023-12-21 13:42:19,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:42:19,941 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:42:19,942 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:42:19,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:42:19,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:42:19,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:42:19" (1/1) ... [2023-12-21 13:42:19,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a799ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:19, skipping insertion in model container [2023-12-21 13:42:19,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:42:19" (1/1) ... [2023-12-21 13:42:20,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:42:20,175 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4107,4120] [2023-12-21 13:42:20,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:42:20,204 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:42:20,250 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4107,4120] [2023-12-21 13:42:20,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:42:20,278 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:42:20,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20 WrapperNode [2023-12-21 13:42:20,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:42:20,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:42:20,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:42:20,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:42:20,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,314 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 288 [2023-12-21 13:42:20,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:42:20,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:42:20,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:42:20,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:42:20,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,361 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:42:20,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:42:20,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:42:20,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:42:20,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:42:20,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (1/1) ... [2023-12-21 13:42:20,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:42:20,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:42:20,430 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) [2023-12-21 13:42:20,447 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 [2023-12-21 13:42:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:42:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:42:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:42:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:42:20,529 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:42:20,530 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:42:20,730 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:42:20,753 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:42:20,753 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:42:20,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:42:20 BoogieIcfgContainer [2023-12-21 13:42:20,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:42:20,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:42:20,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:42:20,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:42:20,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:42:19" (1/3) ... [2023-12-21 13:42:20,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a66c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:42:20, skipping insertion in model container [2023-12-21 13:42:20,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20" (2/3) ... [2023-12-21 13:42:20,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a66c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:42:20, skipping insertion in model container [2023-12-21 13:42:20,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:42:20" (3/3) ... [2023-12-21 13:42:20,759 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:42:20,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:42:20,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:42:20,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:42:20,812 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;@4181a130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:42:20,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:42:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 13:42:20,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:20,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:20,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:20,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash 358399884, now seen corresponding path program 1 times [2023-12-21 13:42:20,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:20,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257066679] [2023-12-21 13:42:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:20,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257066679] [2023-12-21 13:42:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257066679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:21,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:21,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:42:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832725924] [2023-12-21 13:42:21,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:42:21,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:42:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:21,135 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:21,198 INFO L93 Difference]: Finished difference Result 142 states and 226 transitions. [2023-12-21 13:42:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:42:21,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 13:42:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:21,206 INFO L225 Difference]: With dead ends: 142 [2023-12-21 13:42:21,206 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 13:42:21,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:21,212 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 60 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:21,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 203 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 13:42:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2023-12-21 13:42:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 91 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 135 transitions. [2023-12-21 13:42:21,246 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 135 transitions. Word has length 36 [2023-12-21 13:42:21,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:21,246 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 135 transitions. [2023-12-21 13:42:21,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 135 transitions. [2023-12-21 13:42:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 13:42:21,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:21,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:21,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:42:21,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:21,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1160274850, now seen corresponding path program 1 times [2023-12-21 13:42:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:21,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145344656] [2023-12-21 13:42:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:21,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:21,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:21,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145344656] [2023-12-21 13:42:21,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145344656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:21,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:21,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:42:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953340303] [2023-12-21 13:42:21,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:42:21,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:42:21,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:21,362 INFO L87 Difference]: Start difference. First operand 92 states and 135 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:21,396 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions. [2023-12-21 13:42:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:42:21,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 13:42:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:21,401 INFO L225 Difference]: With dead ends: 224 [2023-12-21 13:42:21,401 INFO L226 Difference]: Without dead ends: 150 [2023-12-21 13:42:21,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:21,402 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:21,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:21,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-21 13:42:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-12-21 13:42:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5170068027210883) internal successors, (223), 147 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 223 transitions. [2023-12-21 13:42:21,415 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 223 transitions. Word has length 37 [2023-12-21 13:42:21,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:21,415 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 223 transitions. [2023-12-21 13:42:21,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 223 transitions. [2023-12-21 13:42:21,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 13:42:21,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:21,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:21,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:42:21,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:21,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1494588776, now seen corresponding path program 1 times [2023-12-21 13:42:21,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:21,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496711177] [2023-12-21 13:42:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:21,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:21,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496711177] [2023-12-21 13:42:21,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496711177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:21,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:21,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:42:21,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66988536] [2023-12-21 13:42:21,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:21,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:42:21,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:42:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:21,555 INFO L87 Difference]: Start difference. First operand 148 states and 223 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:21,646 INFO L93 Difference]: Finished difference Result 928 states and 1453 transitions. [2023-12-21 13:42:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:42:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 13:42:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:21,651 INFO L225 Difference]: With dead ends: 928 [2023-12-21 13:42:21,651 INFO L226 Difference]: Without dead ends: 798 [2023-12-21 13:42:21,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:42:21,652 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 410 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:21,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 573 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-12-21 13:42:21,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 276. [2023-12-21 13:42:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.5236363636363637) internal successors, (419), 275 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 419 transitions. [2023-12-21 13:42:21,670 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 419 transitions. Word has length 38 [2023-12-21 13:42:21,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:21,670 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 419 transitions. [2023-12-21 13:42:21,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 419 transitions. [2023-12-21 13:42:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 13:42:21,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:21,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:42:21,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:21,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash 858913764, now seen corresponding path program 1 times [2023-12-21 13:42:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012994399] [2023-12-21 13:42:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:21,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:21,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012994399] [2023-12-21 13:42:21,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012994399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:21,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:21,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:42:21,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078528978] [2023-12-21 13:42:21,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:21,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:42:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:21,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:42:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:21,726 INFO L87 Difference]: Start difference. First operand 276 states and 419 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2023-12-21 13:42:21,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:21,744 INFO L93 Difference]: Finished difference Result 748 states and 1145 transitions. [2023-12-21 13:42:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:42:21,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) Word has length 40 [2023-12-21 13:42:21,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:21,747 INFO L225 Difference]: With dead ends: 748 [2023-12-21 13:42:21,747 INFO L226 Difference]: Without dead ends: 490 [2023-12-21 13:42:21,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:21,749 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:21,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:21,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-21 13:42:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 480. [2023-12-21 13:42:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.4926931106471817) internal successors, (715), 479 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 715 transitions. [2023-12-21 13:42:21,761 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 715 transitions. Word has length 40 [2023-12-21 13:42:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:21,761 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 715 transitions. [2023-12-21 13:42:21,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2023-12-21 13:42:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 715 transitions. [2023-12-21 13:42:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 13:42:21,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:21,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:21,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:42:21,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:21,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash 879916419, now seen corresponding path program 1 times [2023-12-21 13:42:21,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:21,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677216955] [2023-12-21 13:42:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:21,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:21,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:21,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677216955] [2023-12-21 13:42:21,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677216955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:21,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:21,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:42:21,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382278494] [2023-12-21 13:42:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:21,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:42:21,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:42:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:21,891 INFO L87 Difference]: Start difference. First operand 480 states and 715 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2023-12-21 13:42:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:21,935 INFO L93 Difference]: Finished difference Result 944 states and 1413 transitions. [2023-12-21 13:42:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:42:21,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) Word has length 40 [2023-12-21 13:42:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:21,940 INFO L225 Difference]: With dead ends: 944 [2023-12-21 13:42:21,940 INFO L226 Difference]: Without dead ends: 482 [2023-12-21 13:42:21,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:42:21,941 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 88 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:21,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 202 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-21 13:42:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 480. [2023-12-21 13:42:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.475991649269311) internal successors, (707), 479 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 707 transitions. [2023-12-21 13:42:21,960 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 707 transitions. Word has length 40 [2023-12-21 13:42:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:21,960 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 707 transitions. [2023-12-21 13:42:21,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2023-12-21 13:42:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 707 transitions. [2023-12-21 13:42:21,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 13:42:21,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:21,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:21,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:42:21,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:21,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:21,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1505695790, now seen corresponding path program 1 times [2023-12-21 13:42:21,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:21,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78510125] [2023-12-21 13:42:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:21,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:22,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78510125] [2023-12-21 13:42:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78510125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:22,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:42:22,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40823886] [2023-12-21 13:42:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:22,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:42:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:42:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:22,115 INFO L87 Difference]: Start difference. First operand 480 states and 707 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:22,199 INFO L93 Difference]: Finished difference Result 1200 states and 1793 transitions. [2023-12-21 13:42:22,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:42:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 13:42:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:22,203 INFO L225 Difference]: With dead ends: 1200 [2023-12-21 13:42:22,204 INFO L226 Difference]: Without dead ends: 738 [2023-12-21 13:42:22,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:42:22,207 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 353 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:22,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:42:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-12-21 13:42:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 736. [2023-12-21 13:42:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.4789115646258504) internal successors, (1087), 735 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1087 transitions. [2023-12-21 13:42:22,238 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1087 transitions. Word has length 41 [2023-12-21 13:42:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:22,240 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1087 transitions. [2023-12-21 13:42:22,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1087 transitions. [2023-12-21 13:42:22,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 13:42:22,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:22,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:22,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:42:22,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:22,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1633781097, now seen corresponding path program 1 times [2023-12-21 13:42:22,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:22,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144830970] [2023-12-21 13:42:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:22,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:22,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:22,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144830970] [2023-12-21 13:42:22,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144830970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:22,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:22,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:42:22,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007279586] [2023-12-21 13:42:22,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:22,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:42:22,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:22,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:42:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:22,375 INFO L87 Difference]: Start difference. First operand 736 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:22,434 INFO L93 Difference]: Finished difference Result 1454 states and 2156 transitions. [2023-12-21 13:42:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:42:22,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 13:42:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:22,437 INFO L225 Difference]: With dead ends: 1454 [2023-12-21 13:42:22,438 INFO L226 Difference]: Without dead ends: 736 [2023-12-21 13:42:22,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:42:22,442 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 209 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:22,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:22,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-12-21 13:42:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2023-12-21 13:42:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.4625850340136055) internal successors, (1075), 735 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1075 transitions. [2023-12-21 13:42:22,462 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1075 transitions. Word has length 41 [2023-12-21 13:42:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:22,462 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1075 transitions. [2023-12-21 13:42:22,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1075 transitions. [2023-12-21 13:42:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 13:42:22,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:22,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:22,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:42:22,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:22,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1795653810, now seen corresponding path program 1 times [2023-12-21 13:42:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:22,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24617795] [2023-12-21 13:42:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:22,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24617795] [2023-12-21 13:42:22,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24617795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:22,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:22,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:42:22,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292249150] [2023-12-21 13:42:22,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:22,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:42:22,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:22,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:42:22,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:22,684 INFO L87 Difference]: Start difference. First operand 736 states and 1075 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:22,735 INFO L93 Difference]: Finished difference Result 1343 states and 1962 transitions. [2023-12-21 13:42:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:42:22,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 13:42:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:22,740 INFO L225 Difference]: With dead ends: 1343 [2023-12-21 13:42:22,741 INFO L226 Difference]: Without dead ends: 1341 [2023-12-21 13:42:22,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:42:22,743 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 114 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:22,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 402 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2023-12-21 13:42:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 768. [2023-12-21 13:42:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.438070404172099) internal successors, (1103), 767 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1103 transitions. [2023-12-21 13:42:22,760 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1103 transitions. Word has length 41 [2023-12-21 13:42:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:22,761 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 1103 transitions. [2023-12-21 13:42:22,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1103 transitions. [2023-12-21 13:42:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 13:42:22,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:22,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:22,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:42:22,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:22,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1846258053, now seen corresponding path program 1 times [2023-12-21 13:42:22,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:22,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084560353] [2023-12-21 13:42:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084560353] [2023-12-21 13:42:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084560353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:22,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:22,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:42:22,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683194871] [2023-12-21 13:42:22,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:22,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:42:22,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:22,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:42:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:22,811 INFO L87 Difference]: Start difference. First operand 768 states and 1103 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:22,836 INFO L93 Difference]: Finished difference Result 1703 states and 2477 transitions. [2023-12-21 13:42:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:42:22,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 13:42:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:22,841 INFO L225 Difference]: With dead ends: 1703 [2023-12-21 13:42:22,842 INFO L226 Difference]: Without dead ends: 1156 [2023-12-21 13:42:22,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:22,849 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 52 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:22,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 183 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-12-21 13:42:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1154. [2023-12-21 13:42:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.430182133564614) internal successors, (1649), 1153 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1649 transitions. [2023-12-21 13:42:22,876 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1649 transitions. Word has length 41 [2023-12-21 13:42:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:22,878 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1649 transitions. [2023-12-21 13:42:22,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1649 transitions. [2023-12-21 13:42:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 13:42:22,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:22,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:22,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:42:22,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:22,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1413176550, now seen corresponding path program 1 times [2023-12-21 13:42:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:22,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677063091] [2023-12-21 13:42:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:42:23,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:23,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677063091] [2023-12-21 13:42:23,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677063091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:23,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:23,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:42:23,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375889484] [2023-12-21 13:42:23,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:23,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:42:23,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:23,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:42:23,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:23,012 INFO L87 Difference]: Start difference. First operand 1154 states and 1649 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:23,081 INFO L93 Difference]: Finished difference Result 4922 states and 7047 transitions. [2023-12-21 13:42:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:42:23,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 13:42:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:23,096 INFO L225 Difference]: With dead ends: 4922 [2023-12-21 13:42:23,097 INFO L226 Difference]: Without dead ends: 3788 [2023-12-21 13:42:23,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:42:23,101 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 229 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:23,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 337 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2023-12-21 13:42:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2286. [2023-12-21 13:42:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2285 states have (on average 1.425382932166302) internal successors, (3257), 2285 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3257 transitions. [2023-12-21 13:42:23,171 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3257 transitions. Word has length 60 [2023-12-21 13:42:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:23,171 INFO L495 AbstractCegarLoop]: Abstraction has 2286 states and 3257 transitions. [2023-12-21 13:42:23,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3257 transitions. [2023-12-21 13:42:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 13:42:23,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:23,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:23,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:42:23,172 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:23,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1727844640, now seen corresponding path program 1 times [2023-12-21 13:42:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:23,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949758225] [2023-12-21 13:42:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:42:23,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:23,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949758225] [2023-12-21 13:42:23,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949758225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:23,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:23,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:42:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097617488] [2023-12-21 13:42:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:23,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:42:23,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:42:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:23,268 INFO L87 Difference]: Start difference. First operand 2286 states and 3257 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:23,354 INFO L93 Difference]: Finished difference Result 6054 states and 8655 transitions. [2023-12-21 13:42:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:42:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 60 [2023-12-21 13:42:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:23,373 INFO L225 Difference]: With dead ends: 6054 [2023-12-21 13:42:23,373 INFO L226 Difference]: Without dead ends: 4920 [2023-12-21 13:42:23,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:42:23,377 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 219 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:23,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 382 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:23,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2023-12-21 13:42:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 3986. [2023-12-21 13:42:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3985 states have (on average 1.4180677540777917) internal successors, (5651), 3985 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5651 transitions. [2023-12-21 13:42:23,463 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5651 transitions. Word has length 60 [2023-12-21 13:42:23,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:23,464 INFO L495 AbstractCegarLoop]: Abstraction has 3986 states and 5651 transitions. [2023-12-21 13:42:23,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5651 transitions. [2023-12-21 13:42:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:42:23,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:23,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:23,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:42:23,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:23,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash -996358177, now seen corresponding path program 1 times [2023-12-21 13:42:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:23,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393487143] [2023-12-21 13:42:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:42:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393487143] [2023-12-21 13:42:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393487143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:23,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:42:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318486191] [2023-12-21 13:42:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:23,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:42:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:42:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:23,564 INFO L87 Difference]: Start difference. First operand 3986 states and 5651 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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) [2023-12-21 13:42:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:23,628 INFO L93 Difference]: Finished difference Result 6778 states and 9711 transitions. [2023-12-21 13:42:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:42:23,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 61 [2023-12-21 13:42:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:23,644 INFO L225 Difference]: With dead ends: 6778 [2023-12-21 13:42:23,644 INFO L226 Difference]: Without dead ends: 5848 [2023-12-21 13:42:23,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:42:23,647 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 215 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:23,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 346 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2023-12-21 13:42:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 4914. [2023-12-21 13:42:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4913 states have (on average 1.4221453287197232) internal successors, (6987), 4913 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 6987 transitions. [2023-12-21 13:42:23,723 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 6987 transitions. Word has length 61 [2023-12-21 13:42:23,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:23,723 INFO L495 AbstractCegarLoop]: Abstraction has 4914 states and 6987 transitions. [2023-12-21 13:42:23,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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) [2023-12-21 13:42:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 6987 transitions. [2023-12-21 13:42:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:42:23,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:23,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:23,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:42:23,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:23,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash -47821439, now seen corresponding path program 1 times [2023-12-21 13:42:23,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:23,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169390026] [2023-12-21 13:42:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:23,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169390026] [2023-12-21 13:42:23,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169390026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:23,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:23,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:42:23,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117352984] [2023-12-21 13:42:23,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:23,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:42:23,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:42:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:23,779 INFO L87 Difference]: Start difference. First operand 4914 states and 6987 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:23,808 INFO L93 Difference]: Finished difference Result 9120 states and 13032 transitions. [2023-12-21 13:42:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:42:23,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 13:42:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:23,826 INFO L225 Difference]: With dead ends: 9120 [2023-12-21 13:42:23,826 INFO L226 Difference]: Without dead ends: 4226 [2023-12-21 13:42:23,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:42:23,832 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:23,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:42:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2023-12-21 13:42:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4224. [2023-12-21 13:42:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 4223 states have (on average 1.4186597205777882) internal successors, (5991), 4223 states have internal predecessors, (5991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 5991 transitions. [2023-12-21 13:42:23,891 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 5991 transitions. Word has length 62 [2023-12-21 13:42:23,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:23,892 INFO L495 AbstractCegarLoop]: Abstraction has 4224 states and 5991 transitions. [2023-12-21 13:42:23,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 5991 transitions. [2023-12-21 13:42:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:42:23,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:23,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:42:23,893 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:23,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1761938601, now seen corresponding path program 1 times [2023-12-21 13:42:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837914507] [2023-12-21 13:42:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:24,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837914507] [2023-12-21 13:42:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837914507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:42:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531160929] [2023-12-21 13:42:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:24,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:42:24,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:42:24,297 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) [2023-12-21 13:42:24,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:42:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:24,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 13:42:24,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:42:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:42:24,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:42:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:42:24,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531160929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:42:24,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:42:24,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-21 13:42:24,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200011884] [2023-12-21 13:42:24,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:42:24,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 13:42:24,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:24,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 13:42:24,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:42:24,669 INFO L87 Difference]: Start difference. First operand 4224 states and 5991 transitions. Second operand has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:29,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:29,228 INFO L93 Difference]: Finished difference Result 52888 states and 72307 transitions. [2023-12-21 13:42:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-21 13:42:29,228 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 0 states have call successors, (0), 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 62 [2023-12-21 13:42:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:29,304 INFO L225 Difference]: With dead ends: 52888 [2023-12-21 13:42:29,304 INFO L226 Difference]: Without dead ends: 48710 [2023-12-21 13:42:29,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9802 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3526, Invalid=19426, Unknown=0, NotChecked=0, Total=22952 [2023-12-21 13:42:29,324 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 3117 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3117 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:29,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3117 Valid, 976 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 13:42:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48710 states. [2023-12-21 13:42:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48710 to 21561. [2023-12-21 13:42:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21561 states, 21560 states have (on average 1.356818181818182) internal successors, (29253), 21560 states have internal predecessors, (29253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21561 states to 21561 states and 29253 transitions. [2023-12-21 13:42:29,830 INFO L78 Accepts]: Start accepts. Automaton has 21561 states and 29253 transitions. Word has length 62 [2023-12-21 13:42:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:29,831 INFO L495 AbstractCegarLoop]: Abstraction has 21561 states and 29253 transitions. [2023-12-21 13:42:29,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 21561 states and 29253 transitions. [2023-12-21 13:42:29,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:42:29,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:29,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:29,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 13:42:30,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-21 13:42:30,042 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:30,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1655136314, now seen corresponding path program 1 times [2023-12-21 13:42:30,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832576413] [2023-12-21 13:42:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:30,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:30,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:30,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832576413] [2023-12-21 13:42:30,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832576413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:42:30,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571409029] [2023-12-21 13:42:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:30,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:42:30,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:42:30,361 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) [2023-12-21 13:42:30,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 13:42:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:30,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 13:42:30,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:42:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:31,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:42:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571409029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:42:32,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:42:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 32 [2023-12-21 13:42:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358273748] [2023-12-21 13:42:32,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:42:32,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 13:42:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 13:42:32,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:42:32,705 INFO L87 Difference]: Start difference. First operand 21561 states and 29253 transitions. Second operand has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:48,598 INFO L93 Difference]: Finished difference Result 326852 states and 433450 transitions. [2023-12-21 13:42:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2023-12-21 13:42:48,600 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 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 [2023-12-21 13:42:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:49,411 INFO L225 Difference]: With dead ends: 326852 [2023-12-21 13:42:49,412 INFO L226 Difference]: Without dead ends: 305330 [2023-12-21 13:42:49,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33001 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=11572, Invalid=62684, Unknown=0, NotChecked=0, Total=74256 [2023-12-21 13:42:49,522 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 6609 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6609 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 3887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:49,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6609 Valid, 3138 Invalid, 3887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 3775 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 13:42:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305330 states. [2023-12-21 13:42:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305330 to 85174. [2023-12-21 13:42:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85174 states, 85173 states have (on average 1.3349300834771582) internal successors, (113700), 85173 states have internal predecessors, (113700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85174 states to 85174 states and 113700 transitions. [2023-12-21 13:42:52,399 INFO L78 Accepts]: Start accepts. Automaton has 85174 states and 113700 transitions. Word has length 63 [2023-12-21 13:42:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:52,400 INFO L495 AbstractCegarLoop]: Abstraction has 85174 states and 113700 transitions. [2023-12-21 13:42:52,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 85174 states and 113700 transitions. [2023-12-21 13:42:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:42:52,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:52,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:52,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 13:42:52,608 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,SelfDestructingSolverStorable14 [2023-12-21 13:42:52,608 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:52,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:52,609 INFO L85 PathProgramCache]: Analyzing trace with hash -828916665, now seen corresponding path program 1 times [2023-12-21 13:42:52,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:52,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991445959] [2023-12-21 13:42:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:53,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:53,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991445959] [2023-12-21 13:42:53,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991445959] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:42:53,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112903117] [2023-12-21 13:42:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:53,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:42:53,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:42:53,525 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) [2023-12-21 13:42:53,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 13:42:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:53,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 13:42:53,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:42:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:54,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:42:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:54,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112903117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:42:54,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:42:54,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 11] total 42 [2023-12-21 13:42:54,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397610607] [2023-12-21 13:42:54,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:42:54,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 13:42:54,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:54,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 13:42:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1680, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 13:42:54,927 INFO L87 Difference]: Start difference. First operand 85174 states and 113700 transitions. Second operand has 43 states, 43 states have (on average 4.046511627906977) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:01,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:01,808 INFO L93 Difference]: Finished difference Result 231827 states and 307924 transitions. [2023-12-21 13:43:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 13:43:01,809 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.046511627906977) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 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 64 [2023-12-21 13:43:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:02,103 INFO L225 Difference]: With dead ends: 231827 [2023-12-21 13:43:02,104 INFO L226 Difference]: Without dead ends: 197520 [2023-12-21 13:43:02,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2462, Invalid=12058, Unknown=0, NotChecked=0, Total=14520 [2023-12-21 13:43:02,168 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 5057 mSDsluCounter, 7407 mSDsCounter, 0 mSdLazyCounter, 3353 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5057 SdHoareTripleChecker+Valid, 7746 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:02,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5057 Valid, 7746 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3353 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 13:43:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197520 states. [2023-12-21 13:43:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197520 to 98049. [2023-12-21 13:43:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98049 states, 98048 states have (on average 1.333734497389034) internal successors, (130770), 98048 states have internal predecessors, (130770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98049 states to 98049 states and 130770 transitions. [2023-12-21 13:43:04,497 INFO L78 Accepts]: Start accepts. Automaton has 98049 states and 130770 transitions. Word has length 64 [2023-12-21 13:43:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:04,497 INFO L495 AbstractCegarLoop]: Abstraction has 98049 states and 130770 transitions. [2023-12-21 13:43:04,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.046511627906977) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 98049 states and 130770 transitions. [2023-12-21 13:43:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:43:04,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:04,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:04,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 13:43:04,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:04,705 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:04,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1418818140, now seen corresponding path program 1 times [2023-12-21 13:43:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:04,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420947122] [2023-12-21 13:43:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:04,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:04,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420947122] [2023-12-21 13:43:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420947122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:04,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108624332] [2023-12-21 13:43:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:04,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:04,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:04,773 INFO L87 Difference]: Start difference. First operand 98049 states and 130770 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:05,246 INFO L93 Difference]: Finished difference Result 144921 states and 192988 transitions. [2023-12-21 13:43:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:05,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-21 13:43:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:05,318 INFO L225 Difference]: With dead ends: 144921 [2023-12-21 13:43:05,319 INFO L226 Difference]: Without dead ends: 54900 [2023-12-21 13:43:05,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:05,370 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 30 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:05,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54900 states. [2023-12-21 13:43:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54900 to 54898. [2023-12-21 13:43:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54898 states, 54897 states have (on average 1.2980126418565678) internal successors, (71257), 54897 states have internal predecessors, (71257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54898 states to 54898 states and 71257 transitions. [2023-12-21 13:43:06,259 INFO L78 Accepts]: Start accepts. Automaton has 54898 states and 71257 transitions. Word has length 64 [2023-12-21 13:43:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:06,259 INFO L495 AbstractCegarLoop]: Abstraction has 54898 states and 71257 transitions. [2023-12-21 13:43:06,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:06,259 INFO L276 IsEmpty]: Start isEmpty. Operand 54898 states and 71257 transitions. [2023-12-21 13:43:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:43:06,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:06,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:06,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:43:06,261 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:06,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:06,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1444308260, now seen corresponding path program 1 times [2023-12-21 13:43:06,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:06,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774971772] [2023-12-21 13:43:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:06,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774971772] [2023-12-21 13:43:06,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774971772] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894743611] [2023-12-21 13:43:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:06,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:06,602 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) [2023-12-21 13:43:06,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 13:43:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:06,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:43:06,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:07,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:08,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894743611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:08,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:08,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-21 13:43:08,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594585977] [2023-12-21 13:43:08,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:08,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 13:43:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:08,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 13:43:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:43:08,066 INFO L87 Difference]: Start difference. First operand 54898 states and 71257 transitions. Second operand has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:32,119 INFO L93 Difference]: Finished difference Result 270755 states and 345805 transitions. [2023-12-21 13:43:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2023-12-21 13:43:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 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 64 [2023-12-21 13:43:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:32,411 INFO L225 Difference]: With dead ends: 270755 [2023-12-21 13:43:32,411 INFO L226 Difference]: Without dead ends: 235800 [2023-12-21 13:43:32,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44121 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=12138, Invalid=93812, Unknown=0, NotChecked=0, Total=105950 [2023-12-21 13:43:32,487 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 12218 mSDsluCounter, 9001 mSDsCounter, 0 mSdLazyCounter, 3192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12218 SdHoareTripleChecker+Valid, 9689 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:32,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12218 Valid, 9689 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3192 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 13:43:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235800 states. [2023-12-21 13:43:34,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235800 to 75684. [2023-12-21 13:43:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75684 states, 75683 states have (on average 1.3010583618514064) internal successors, (98468), 75683 states have internal predecessors, (98468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75684 states to 75684 states and 98468 transitions. [2023-12-21 13:43:34,713 INFO L78 Accepts]: Start accepts. Automaton has 75684 states and 98468 transitions. Word has length 64 [2023-12-21 13:43:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:34,713 INFO L495 AbstractCegarLoop]: Abstraction has 75684 states and 98468 transitions. [2023-12-21 13:43:34,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 75684 states and 98468 transitions. [2023-12-21 13:43:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:43:34,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:34,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:34,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 13:43:34,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 13:43:34,921 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:34,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:34,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1345366557, now seen corresponding path program 1 times [2023-12-21 13:43:34,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:34,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028402124] [2023-12-21 13:43:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 13:43:34,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:34,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028402124] [2023-12-21 13:43:34,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028402124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:34,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:34,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:34,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071005277] [2023-12-21 13:43:34,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:34,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:34,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:34,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:34,957 INFO L87 Difference]: Start difference. First operand 75684 states and 98468 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:35,505 INFO L93 Difference]: Finished difference Result 126766 states and 165329 transitions. [2023-12-21 13:43:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:35,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 13:43:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:35,569 INFO L225 Difference]: With dead ends: 126766 [2023-12-21 13:43:35,570 INFO L226 Difference]: Without dead ends: 52272 [2023-12-21 13:43:35,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:35,611 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 53 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:35,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 97 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52272 states. [2023-12-21 13:43:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52272 to 52272. [2023-12-21 13:43:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52272 states, 52271 states have (on average 1.2913661494901572) internal successors, (67501), 52271 states have internal predecessors, (67501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52272 states to 52272 states and 67501 transitions. [2023-12-21 13:43:36,486 INFO L78 Accepts]: Start accepts. Automaton has 52272 states and 67501 transitions. Word has length 65 [2023-12-21 13:43:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:36,486 INFO L495 AbstractCegarLoop]: Abstraction has 52272 states and 67501 transitions. [2023-12-21 13:43:36,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 52272 states and 67501 transitions. [2023-12-21 13:43:36,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:43:36,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:36,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:36,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:43:36,487 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:36,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1345245760, now seen corresponding path program 1 times [2023-12-21 13:43:36,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:36,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750250276] [2023-12-21 13:43:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:36,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:43:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750250276] [2023-12-21 13:43:36,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750250276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:36,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:36,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573574877] [2023-12-21 13:43:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:36,534 INFO L87 Difference]: Start difference. First operand 52272 states and 67501 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:36,682 INFO L93 Difference]: Finished difference Result 79113 states and 102605 transitions. [2023-12-21 13:43:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:36,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 66 [2023-12-21 13:43:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:36,713 INFO L225 Difference]: With dead ends: 79113 [2023-12-21 13:43:36,714 INFO L226 Difference]: Without dead ends: 27222 [2023-12-21 13:43:36,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:36,741 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 48 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:36,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 74 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:36,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27222 states. [2023-12-21 13:43:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27222 to 27222. [2023-12-21 13:43:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27222 states, 27221 states have (on average 1.287902722163036) internal successors, (35058), 27221 states have internal predecessors, (35058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27222 states to 27222 states and 35058 transitions. [2023-12-21 13:43:37,119 INFO L78 Accepts]: Start accepts. Automaton has 27222 states and 35058 transitions. Word has length 66 [2023-12-21 13:43:37,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:37,120 INFO L495 AbstractCegarLoop]: Abstraction has 27222 states and 35058 transitions. [2023-12-21 13:43:37,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 27222 states and 35058 transitions. [2023-12-21 13:43:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:43:37,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:37,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:37,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:43:37,121 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:37,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash -272504981, now seen corresponding path program 1 times [2023-12-21 13:43:37,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:37,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925851044] [2023-12-21 13:43:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:37,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:43:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:37,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925851044] [2023-12-21 13:43:37,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925851044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:37,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778640660] [2023-12-21 13:43:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:37,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:37,165 INFO L87 Difference]: Start difference. First operand 27222 states and 35058 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:37,262 INFO L93 Difference]: Finished difference Result 49068 states and 63203 transitions. [2023-12-21 13:43:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:37,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 66 [2023-12-21 13:43:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:37,285 INFO L225 Difference]: With dead ends: 49068 [2023-12-21 13:43:37,285 INFO L226 Difference]: Without dead ends: 21911 [2023-12-21 13:43:37,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:37,302 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 51 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:37,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 91 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21911 states. [2023-12-21 13:43:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21911 to 21911. [2023-12-21 13:43:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21911 states, 21910 states have (on average 1.2678229119123687) internal successors, (27778), 21910 states have internal predecessors, (27778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21911 states to 21911 states and 27778 transitions. [2023-12-21 13:43:37,609 INFO L78 Accepts]: Start accepts. Automaton has 21911 states and 27778 transitions. Word has length 66 [2023-12-21 13:43:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:37,609 INFO L495 AbstractCegarLoop]: Abstraction has 21911 states and 27778 transitions. [2023-12-21 13:43:37,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 21911 states and 27778 transitions. [2023-12-21 13:43:37,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 13:43:37,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:37,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:37,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:43:37,610 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:37,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash 993814636, now seen corresponding path program 1 times [2023-12-21 13:43:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:37,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349819998] [2023-12-21 13:43:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:37,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:37,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349819998] [2023-12-21 13:43:37,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349819998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121244496] [2023-12-21 13:43:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:37,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:37,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:37,676 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) [2023-12-21 13:43:37,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 13:43:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:37,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:43:37,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:37,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:38,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121244496] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:38,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:38,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-21 13:43:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994665537] [2023-12-21 13:43:38,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:38,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:43:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:38,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:43:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:43:38,060 INFO L87 Difference]: Start difference. First operand 21911 states and 27778 transitions. Second operand has 11 states, 11 states have (on average 14.181818181818182) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:38,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:38,226 INFO L93 Difference]: Finished difference Result 36062 states and 45549 transitions. [2023-12-21 13:43:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:43:38,226 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.181818181818182) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 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 87 [2023-12-21 13:43:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:38,248 INFO L225 Difference]: With dead ends: 36062 [2023-12-21 13:43:38,248 INFO L226 Difference]: Without dead ends: 21200 [2023-12-21 13:43:38,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 164 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-21 13:43:38,261 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 351 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:38,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 250 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:43:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21200 states. [2023-12-21 13:43:38,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21200 to 19188. [2023-12-21 13:43:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19188 states, 19187 states have (on average 1.2490748944597905) internal successors, (23966), 19187 states have internal predecessors, (23966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19188 states to 19188 states and 23966 transitions. [2023-12-21 13:43:38,530 INFO L78 Accepts]: Start accepts. Automaton has 19188 states and 23966 transitions. Word has length 87 [2023-12-21 13:43:38,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:38,530 INFO L495 AbstractCegarLoop]: Abstraction has 19188 states and 23966 transitions. [2023-12-21 13:43:38,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.181818181818182) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 19188 states and 23966 transitions. [2023-12-21 13:43:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:43:38,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:38,533 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:38,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 13:43:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-21 13:43:38,741 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:38,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -198688652, now seen corresponding path program 1 times [2023-12-21 13:43:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:38,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850619582] [2023-12-21 13:43:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:38,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 13:43:38,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:38,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850619582] [2023-12-21 13:43:38,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850619582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:38,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:38,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:38,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579283989] [2023-12-21 13:43:38,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:38,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:38,792 INFO L87 Difference]: Start difference. First operand 19188 states and 23966 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:38,846 INFO L93 Difference]: Finished difference Result 29357 states and 36714 transitions. [2023-12-21 13:43:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:38,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 109 [2023-12-21 13:43:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:38,855 INFO L225 Difference]: With dead ends: 29357 [2023-12-21 13:43:38,855 INFO L226 Difference]: Without dead ends: 10538 [2023-12-21 13:43:38,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:38,866 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 24 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:38,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 136 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2023-12-21 13:43:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 10536. [2023-12-21 13:43:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10535 states have (on average 1.2362600854295207) internal successors, (13024), 10535 states have internal predecessors, (13024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 13024 transitions. [2023-12-21 13:43:39,071 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 13024 transitions. Word has length 109 [2023-12-21 13:43:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:39,071 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 13024 transitions. [2023-12-21 13:43:39,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:39,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 13024 transitions. [2023-12-21 13:43:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:43:39,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:39,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:39,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:43:39,073 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:39,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 184087156, now seen corresponding path program 1 times [2023-12-21 13:43:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282870427] [2023-12-21 13:43:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:39,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:39,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282870427] [2023-12-21 13:43:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282870427] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191005811] [2023-12-21 13:43:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:39,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:39,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:39,425 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) [2023-12-21 13:43:39,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 13:43:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:39,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:43:39,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:40,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191005811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:41,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:41,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-21 13:43:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711228413] [2023-12-21 13:43:41,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 13:43:41,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 13:43:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:43:41,214 INFO L87 Difference]: Start difference. First operand 10536 states and 13024 transitions. Second operand has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,718 INFO L93 Difference]: Finished difference Result 17936 states and 22150 transitions. [2023-12-21 13:43:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 13:43:41,718 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 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 109 [2023-12-21 13:43:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,733 INFO L225 Difference]: With dead ends: 17936 [2023-12-21 13:43:41,733 INFO L226 Difference]: Without dead ends: 13398 [2023-12-21 13:43:41,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:43:41,739 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 817 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 692 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:43:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13398 states. [2023-12-21 13:43:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13398 to 10218. [2023-12-21 13:43:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10218 states, 10217 states have (on average 1.2224723500048937) internal successors, (12490), 10217 states have internal predecessors, (12490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10218 states to 10218 states and 12490 transitions. [2023-12-21 13:43:41,839 INFO L78 Accepts]: Start accepts. Automaton has 10218 states and 12490 transitions. Word has length 109 [2023-12-21 13:43:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,840 INFO L495 AbstractCegarLoop]: Abstraction has 10218 states and 12490 transitions. [2023-12-21 13:43:41,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand 10218 states and 12490 transitions. [2023-12-21 13:43:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:43:41,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,842 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:41,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 13:43:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:42,049 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:42,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1529202536, now seen corresponding path program 1 times [2023-12-21 13:43:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650481450] [2023-12-21 13:43:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:42,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650481450] [2023-12-21 13:43:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650481450] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096985906] [2023-12-21 13:43:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:42,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:42,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:42,449 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) [2023-12-21 13:43:42,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 13:43:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:42,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:43:42,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:43,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096985906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:44,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:44,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2023-12-21 13:43:44,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042082271] [2023-12-21 13:43:44,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:44,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:43:44,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:43:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:43:44,157 INFO L87 Difference]: Start difference. First operand 10218 states and 12490 transitions. Second operand has 30 states, 30 states have (on average 9.5) internal successors, (285), 29 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:45,607 INFO L93 Difference]: Finished difference Result 19354 states and 23607 transitions. [2023-12-21 13:43:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 13:43:45,611 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.5) internal successors, (285), 29 states have internal predecessors, (285), 0 states have call successors, (0), 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 109 [2023-12-21 13:43:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:45,623 INFO L225 Difference]: With dead ends: 19354 [2023-12-21 13:43:45,624 INFO L226 Difference]: Without dead ends: 14070 [2023-12-21 13:43:45,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=727, Invalid=2813, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 13:43:45,630 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 2126 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:45,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2126 Valid, 823 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:43:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14070 states. [2023-12-21 13:43:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14070 to 10218. [2023-12-21 13:43:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10218 states, 10217 states have (on average 1.216501908583733) internal successors, (12429), 10217 states have internal predecessors, (12429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10218 states to 10218 states and 12429 transitions. [2023-12-21 13:43:45,721 INFO L78 Accepts]: Start accepts. Automaton has 10218 states and 12429 transitions. Word has length 109 [2023-12-21 13:43:45,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:45,721 INFO L495 AbstractCegarLoop]: Abstraction has 10218 states and 12429 transitions. [2023-12-21 13:43:45,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.5) internal successors, (285), 29 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 10218 states and 12429 transitions. [2023-12-21 13:43:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:43:45,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:45,727 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:45,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 13:43:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:45,932 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:45,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash 461077472, now seen corresponding path program 1 times [2023-12-21 13:43:45,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:45,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177889674] [2023-12-21 13:43:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:45,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:43:46,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:46,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177889674] [2023-12-21 13:43:46,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177889674] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:46,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680311012] [2023-12-21 13:43:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:46,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:46,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:46,454 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) [2023-12-21 13:43:46,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 13:43:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:46,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 13:43:46,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:43:47,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 59 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:43:47,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680311012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:47,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:47,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 13] total 41 [2023-12-21 13:43:47,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696537236] [2023-12-21 13:43:47,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:47,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 13:43:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 13:43:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 13:43:47,830 INFO L87 Difference]: Start difference. First operand 10218 states and 12429 transitions. Second operand has 42 states, 42 states have (on average 6.880952380952381) internal successors, (289), 41 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:57,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:57,454 INFO L93 Difference]: Finished difference Result 43072 states and 52105 transitions. [2023-12-21 13:43:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-21 13:43:57,454 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.880952380952381) internal successors, (289), 41 states have internal predecessors, (289), 0 states have call successors, (0), 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 110 [2023-12-21 13:43:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:57,489 INFO L225 Difference]: With dead ends: 43072 [2023-12-21 13:43:57,489 INFO L226 Difference]: Without dead ends: 33209 [2023-12-21 13:43:57,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10281 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=5096, Invalid=25704, Unknown=0, NotChecked=0, Total=30800 [2023-12-21 13:43:57,504 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 4846 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:57,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4846 Valid, 2956 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 13:43:57,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33209 states. [2023-12-21 13:43:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33209 to 12413. [2023-12-21 13:43:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12413 states, 12412 states have (on average 1.2159200773445054) internal successors, (15092), 12412 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12413 states to 12413 states and 15092 transitions. [2023-12-21 13:43:57,694 INFO L78 Accepts]: Start accepts. Automaton has 12413 states and 15092 transitions. Word has length 110 [2023-12-21 13:43:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:57,694 INFO L495 AbstractCegarLoop]: Abstraction has 12413 states and 15092 transitions. [2023-12-21 13:43:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.880952380952381) internal successors, (289), 41 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 12413 states and 15092 transitions. [2023-12-21 13:43:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:43:57,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:57,695 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:43:57,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 13:43:57,900 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,SelfDestructingSolverStorable25 [2023-12-21 13:43:57,901 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:57,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:57,901 INFO L85 PathProgramCache]: Analyzing trace with hash 350606184, now seen corresponding path program 1 times [2023-12-21 13:43:57,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:57,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969272020] [2023-12-21 13:43:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:58,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:58,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969272020] [2023-12-21 13:43:58,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969272020] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:58,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809379891] [2023-12-21 13:43:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:58,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:58,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:58,361 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) [2023-12-21 13:43:58,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 13:43:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:58,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 13:43:58,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:12,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:16,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809379891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:16,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:16,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27, 25] total 65 [2023-12-21 13:44:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647395284] [2023-12-21 13:44:16,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:16,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 13:44:16,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 13:44:16,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=3825, Unknown=3, NotChecked=0, Total=4160 [2023-12-21 13:44:16,694 INFO L87 Difference]: Start difference. First operand 12413 states and 15092 transitions. Second operand has 65 states, 65 states have (on average 4.753846153846154) internal successors, (309), 65 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:24,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 13:44:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:53,624 INFO L93 Difference]: Finished difference Result 31059 states and 36933 transitions. [2023-12-21 13:44:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2023-12-21 13:44:53,625 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.753846153846154) internal successors, (309), 65 states have internal predecessors, (309), 0 states have call successors, (0), 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 110 [2023-12-21 13:44:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:53,650 INFO L225 Difference]: With dead ends: 31059 [2023-12-21 13:44:53,650 INFO L226 Difference]: Without dead ends: 29277 [2023-12-21 13:44:53,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21656 ImplicationChecksByTransitivity, 41.9s TimeCoverageRelationStatistics Valid=6166, Invalid=53121, Unknown=5, NotChecked=0, Total=59292 [2023-12-21 13:44:53,657 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 3292 mSDsluCounter, 8514 mSDsCounter, 0 mSdLazyCounter, 4867 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 8794 SdHoareTripleChecker+Invalid, 4914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:53,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3292 Valid, 8794 Invalid, 4914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4867 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2023-12-21 13:44:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29277 states. [2023-12-21 13:44:53,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29277 to 17124. [2023-12-21 13:44:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17124 states, 17123 states have (on average 1.2111195468083864) internal successors, (20738), 17123 states have internal predecessors, (20738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17124 states to 17124 states and 20738 transitions. [2023-12-21 13:44:53,827 INFO L78 Accepts]: Start accepts. Automaton has 17124 states and 20738 transitions. Word has length 110 [2023-12-21 13:44:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:53,828 INFO L495 AbstractCegarLoop]: Abstraction has 17124 states and 20738 transitions. [2023-12-21 13:44:53,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.753846153846154) internal successors, (309), 65 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17124 states and 20738 transitions. [2023-12-21 13:44:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:44:53,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:53,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:44:53,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 13:44:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 13:44:54,034 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:54,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -392282014, now seen corresponding path program 1 times [2023-12-21 13:44:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075493760] [2023-12-21 13:44:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 31 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:54,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:54,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075493760] [2023-12-21 13:44:54,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075493760] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:54,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303012266] [2023-12-21 13:44:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:54,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:54,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:54,433 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) [2023-12-21 13:44:54,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 13:44:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:54,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 13:44:54,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 22 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:55,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 22 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:57,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303012266] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:57,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:57,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2023-12-21 13:44:57,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324329052] [2023-12-21 13:44:57,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:57,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 13:44:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:57,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 13:44:57,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2181, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 13:44:57,068 INFO L87 Difference]: Start difference. First operand 17124 states and 20738 transitions. Second operand has 49 states, 49 states have (on average 6.142857142857143) internal successors, (301), 49 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:06,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:45:06,023 INFO L93 Difference]: Finished difference Result 46663 states and 56009 transitions. [2023-12-21 13:45:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-12-21 13:45:06,024 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.142857142857143) internal successors, (301), 49 states have internal predecessors, (301), 0 states have call successors, (0), 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 110 [2023-12-21 13:45:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:45:06,061 INFO L225 Difference]: With dead ends: 46663 [2023-12-21 13:45:06,062 INFO L226 Difference]: Without dead ends: 39529 [2023-12-21 13:45:06,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9250 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2405, Invalid=28747, Unknown=0, NotChecked=0, Total=31152 [2023-12-21 13:45:06,116 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2767 mSDsluCounter, 14637 mSDsCounter, 0 mSdLazyCounter, 4861 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2767 SdHoareTripleChecker+Valid, 15147 SdHoareTripleChecker+Invalid, 4885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:45:06,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2767 Valid, 15147 Invalid, 4885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4861 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 13:45:06,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39529 states. [2023-12-21 13:45:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39529 to 19312. [2023-12-21 13:45:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19312 states, 19311 states have (on average 1.2116928175651183) internal successors, (23399), 19311 states have internal predecessors, (23399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19312 states to 19312 states and 23399 transitions. [2023-12-21 13:45:06,462 INFO L78 Accepts]: Start accepts. Automaton has 19312 states and 23399 transitions. Word has length 110 [2023-12-21 13:45:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:45:06,462 INFO L495 AbstractCegarLoop]: Abstraction has 19312 states and 23399 transitions. [2023-12-21 13:45:06,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.142857142857143) internal successors, (301), 49 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 19312 states and 23399 transitions. [2023-12-21 13:45:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:45:06,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:45:06,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:45:06,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 13:45:06,664 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,SelfDestructingSolverStorable27 [2023-12-21 13:45:06,665 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:45:06,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:45:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1774366996, now seen corresponding path program 1 times [2023-12-21 13:45:06,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:45:06,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687476568] [2023-12-21 13:45:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:06,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:45:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:45:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687476568] [2023-12-21 13:45:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687476568] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:45:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754929023] [2023-12-21 13:45:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:07,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:45:07,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:45:07,533 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) [2023-12-21 13:45:07,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 13:45:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:07,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:45:07,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:45:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 54 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:45:08,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:45:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:45:08,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754929023] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:45:08,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:45:08,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 37 [2023-12-21 13:45:08,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237419546] [2023-12-21 13:45:08,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:45:08,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 13:45:08,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:45:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 13:45:08,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:45:08,916 INFO L87 Difference]: Start difference. First operand 19312 states and 23399 transitions. Second operand has 37 states, 37 states have (on average 8.08108108108108) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:45:15,440 INFO L93 Difference]: Finished difference Result 58272 states and 70399 transitions. [2023-12-21 13:45:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-21 13:45:15,441 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.08108108108108) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-21 13:45:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:45:15,478 INFO L225 Difference]: With dead ends: 58272 [2023-12-21 13:45:15,479 INFO L226 Difference]: Without dead ends: 39726 [2023-12-21 13:45:15,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3918 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2896, Invalid=11624, Unknown=0, NotChecked=0, Total=14520 [2023-12-21 13:45:15,495 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2561 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:45:15,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2561 Valid, 2062 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:45:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39726 states. [2023-12-21 13:45:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39726 to 10529. [2023-12-21 13:45:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10529 states, 10528 states have (on average 1.2031724924012157) internal successors, (12667), 10528 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10529 states to 10529 states and 12667 transitions. [2023-12-21 13:45:15,690 INFO L78 Accepts]: Start accepts. Automaton has 10529 states and 12667 transitions. Word has length 111 [2023-12-21 13:45:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:45:15,691 INFO L495 AbstractCegarLoop]: Abstraction has 10529 states and 12667 transitions. [2023-12-21 13:45:15,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.08108108108108) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:15,691 INFO L276 IsEmpty]: Start isEmpty. Operand 10529 states and 12667 transitions. [2023-12-21 13:45:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:45:15,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:45:15,692 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:45:15,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 13:45:15,897 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,SelfDestructingSolverStorable28 [2023-12-21 13:45:15,897 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:45:15,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:45:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash 921007510, now seen corresponding path program 1 times [2023-12-21 13:45:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:45:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952189897] [2023-12-21 13:45:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:45:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:16,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:45:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952189897] [2023-12-21 13:45:16,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952189897] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:45:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693086186] [2023-12-21 13:45:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:16,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:45:16,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:45:16,764 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) [2023-12-21 13:45:16,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 13:45:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:16,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 13:45:16,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:45:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:18,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:45:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:19,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693086186] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:45:19,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:45:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 19] total 64 [2023-12-21 13:45:19,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258207909] [2023-12-21 13:45:19,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:45:19,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 13:45:19,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:45:19,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 13:45:19,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=3807, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 13:45:19,657 INFO L87 Difference]: Start difference. First operand 10529 states and 12667 transitions. Second operand has 64 states, 64 states have (on average 4.875) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:45:52,606 INFO L93 Difference]: Finished difference Result 46328 states and 55935 transitions. [2023-12-21 13:45:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2023-12-21 13:45:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.875) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-21 13:45:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:45:52,639 INFO L225 Difference]: With dead ends: 46328 [2023-12-21 13:45:52,639 INFO L226 Difference]: Without dead ends: 37586 [2023-12-21 13:45:52,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31277 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=7440, Invalid=84066, Unknown=0, NotChecked=0, Total=91506 [2023-12-21 13:45:52,656 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 4195 mSDsluCounter, 25709 mSDsCounter, 0 mSdLazyCounter, 11746 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4195 SdHoareTripleChecker+Valid, 26321 SdHoareTripleChecker+Invalid, 11808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 11746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:45:52,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4195 Valid, 26321 Invalid, 11808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 11746 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-21 13:45:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37586 states. [2023-12-21 13:45:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37586 to 18022. [2023-12-21 13:45:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18022 states, 18021 states have (on average 1.2032073691804006) internal successors, (21683), 18021 states have internal predecessors, (21683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18022 states to 18022 states and 21683 transitions. [2023-12-21 13:45:52,865 INFO L78 Accepts]: Start accepts. Automaton has 18022 states and 21683 transitions. Word has length 111 [2023-12-21 13:45:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:45:52,865 INFO L495 AbstractCegarLoop]: Abstraction has 18022 states and 21683 transitions. [2023-12-21 13:45:52,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.875) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:45:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 18022 states and 21683 transitions. [2023-12-21 13:45:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:45:52,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:45:52,866 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:45:52,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 13:45:53,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:45:53,071 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:45:53,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:45:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash 28049436, now seen corresponding path program 1 times [2023-12-21 13:45:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:45:53,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464509729] [2023-12-21 13:45:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:45:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:53,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:45:53,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464509729] [2023-12-21 13:45:53,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464509729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:45:53,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414358831] [2023-12-21 13:45:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:53,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:45:53,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:45:53,635 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:45:53,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 13:45:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:53,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 13:45:53,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:45:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:56,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:46:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414358831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:46:00,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:46:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 28] total 73 [2023-12-21 13:46:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772590207] [2023-12-21 13:46:00,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:46:00,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-21 13:46:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:46:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-21 13:46:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=4834, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 13:46:00,636 INFO L87 Difference]: Start difference. First operand 18022 states and 21683 transitions. Second operand has 73 states, 73 states have (on average 4.342465753424658) internal successors, (317), 73 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:49:11,165 INFO L93 Difference]: Finished difference Result 67173 states and 80834 transitions. [2023-12-21 13:49:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 493 states. [2023-12-21 13:49:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.342465753424658) internal successors, (317), 73 states have internal predecessors, (317), 0 states have call successors, (0), 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 112 [2023-12-21 13:49:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:49:11,217 INFO L225 Difference]: With dead ends: 67173 [2023-12-21 13:49:11,217 INFO L226 Difference]: Without dead ends: 62373 [2023-12-21 13:49:11,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129163 ImplicationChecksByTransitivity, 175.6s TimeCoverageRelationStatistics Valid=25687, Invalid=282893, Unknown=0, NotChecked=0, Total=308580 [2023-12-21 13:49:11,235 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 6216 mSDsluCounter, 15801 mSDsCounter, 0 mSdLazyCounter, 14117 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6216 SdHoareTripleChecker+Valid, 16343 SdHoareTripleChecker+Invalid, 14418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 14117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:49:11,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6216 Valid, 16343 Invalid, 14418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [301 Valid, 14117 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2023-12-21 13:49:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62373 states. [2023-12-21 13:49:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62373 to 25962. [2023-12-21 13:49:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25962 states, 25961 states have (on average 1.206001309656793) internal successors, (31309), 25961 states have internal predecessors, (31309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25962 states to 25962 states and 31309 transitions. [2023-12-21 13:49:11,592 INFO L78 Accepts]: Start accepts. Automaton has 25962 states and 31309 transitions. Word has length 112 [2023-12-21 13:49:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:49:11,592 INFO L495 AbstractCegarLoop]: Abstraction has 25962 states and 31309 transitions. [2023-12-21 13:49:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.342465753424658) internal successors, (317), 73 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 25962 states and 31309 transitions. [2023-12-21 13:49:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 13:49:11,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:49:11,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:49:11,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 13:49:11,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-21 13:49:11,799 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:49:11,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:49:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1378878132, now seen corresponding path program 1 times [2023-12-21 13:49:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:49:11,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572611267] [2023-12-21 13:49:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:49:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:49:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:49:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572611267] [2023-12-21 13:49:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572611267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:49:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951718517] [2023-12-21 13:49:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:13,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:49:13,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:49:13,166 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:49:13,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 13:49:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:49:13,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-21 13:49:13,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:49:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 51 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:15,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:49:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:17,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951718517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:49:17,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:49:17,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 19, 20] total 67 [2023-12-21 13:49:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444420115] [2023-12-21 13:49:17,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:49:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-21 13:49:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:49:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-21 13:49:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=4234, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 13:49:17,295 INFO L87 Difference]: Start difference. First operand 25962 states and 31309 transitions. Second operand has 68 states, 68 states have (on average 4.794117647058823) internal successors, (326), 67 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:49:29,740 INFO L93 Difference]: Finished difference Result 49720 states and 59618 transitions. [2023-12-21 13:49:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-21 13:49:29,741 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.794117647058823) internal successors, (326), 67 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-21 13:49:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:49:29,772 INFO L225 Difference]: With dead ends: 49720 [2023-12-21 13:49:29,773 INFO L226 Difference]: Without dead ends: 36783 [2023-12-21 13:49:29,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9118 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=3334, Invalid=28172, Unknown=0, NotChecked=0, Total=31506 [2023-12-21 13:49:29,792 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2461 mSDsluCounter, 8923 mSDsCounter, 0 mSdLazyCounter, 5052 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 9222 SdHoareTripleChecker+Invalid, 5099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:49:29,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2461 Valid, 9222 Invalid, 5099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 5052 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 13:49:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36783 states. [2023-12-21 13:49:30,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36783 to 22636. [2023-12-21 13:49:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22636 states, 22635 states have (on average 1.2074221338634858) internal successors, (27330), 22635 states have internal predecessors, (27330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22636 states to 22636 states and 27330 transitions. [2023-12-21 13:49:30,055 INFO L78 Accepts]: Start accepts. Automaton has 22636 states and 27330 transitions. Word has length 114 [2023-12-21 13:49:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:49:30,055 INFO L495 AbstractCegarLoop]: Abstraction has 22636 states and 27330 transitions. [2023-12-21 13:49:30,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.794117647058823) internal successors, (326), 67 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 22636 states and 27330 transitions. [2023-12-21 13:49:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 13:49:30,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:49:30,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:49:30,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 13:49:30,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:49:30,279 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:49:30,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:49:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1174862654, now seen corresponding path program 1 times [2023-12-21 13:49:30,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:49:30,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109595918] [2023-12-21 13:49:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:30,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:49:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:49:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:31,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:49:31,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109595918] [2023-12-21 13:49:31,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109595918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:49:31,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117132329] [2023-12-21 13:49:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:31,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:49:31,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:49:31,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:49:31,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 13:49:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:49:31,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 13:49:31,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:49:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 20 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:34,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:49:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:38,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117132329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:49:38,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:49:38,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 79 [2023-12-21 13:49:38,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941616011] [2023-12-21 13:49:38,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:49:38,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-21 13:49:38,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:49:38,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-21 13:49:38,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=5915, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 13:49:38,786 INFO L87 Difference]: Start difference. First operand 22636 states and 27330 transitions. Second operand has 80 states, 80 states have (on average 4.0) internal successors, (320), 79 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 13:56:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 500 states. [2023-12-21 13:56:36,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 576 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133650 ImplicationChecksByTransitivity, 405.0s TimeCoverageRelationStatistics Valid=28012, Invalid=305494, Unknown=0, NotChecked=0, Total=333506 [2023-12-21 13:56:36,393 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 7640 mSDsluCounter, 10762 mSDsCounter, 0 mSdLazyCounter, 11943 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7640 SdHoareTripleChecker+Valid, 11050 SdHoareTripleChecker+Invalid, 12278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 11943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:56:36,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7640 Valid, 11050 Invalid, 12278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [335 Valid, 11943 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-12-21 13:56:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 13:56:36,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 13:56:36,413 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 [2023-12-21 13:56:36,414 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 13:56:36,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:56:36,600 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (22636states) and FLOYD_HOARE automaton (currently 500 states, 80 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 578 known predicates. [2023-12-21 13:56:36,605 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:56:36,607 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 13:56:36,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:56:36 BoogieIcfgContainer [2023-12-21 13:56:36,609 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 13:56:36,609 INFO L158 Benchmark]: Toolchain (without parser) took 856668.67ms. Allocated memory was 275.8MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 230.8MB in the beginning and 2.6GB in the end (delta: -2.3GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-21 13:56:36,609 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 164.6MB. Free memory was 113.2MB in the beginning and 113.1MB in the end (delta: 115.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 13:56:36,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.04ms. Allocated memory is still 275.8MB. Free memory was 230.3MB in the beginning and 215.5MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 13:56:36,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.26ms. Allocated memory is still 275.8MB. Free memory was 215.5MB in the beginning and 213.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 13:56:36,610 INFO L158 Benchmark]: Boogie Preprocessor took 64.75ms. Allocated memory is still 275.8MB. Free memory was 213.0MB in the beginning and 210.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 13:56:36,610 INFO L158 Benchmark]: RCFGBuilder took 373.13ms. Allocated memory is still 275.8MB. Free memory was 210.9MB in the beginning and 189.4MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-21 13:56:36,610 INFO L158 Benchmark]: TraceAbstraction took 855853.49ms. Allocated memory was 275.8MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 188.9MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-21 13:56:36,611 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 164.6MB. Free memory was 113.2MB in the beginning and 113.1MB in the end (delta: 115.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 337.04ms. Allocated memory is still 275.8MB. Free memory was 230.3MB in the beginning and 215.5MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.26ms. Allocated memory is still 275.8MB. Free memory was 215.5MB in the beginning and 213.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.75ms. Allocated memory is still 275.8MB. Free memory was 213.0MB in the beginning and 210.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 373.13ms. Allocated memory is still 275.8MB. Free memory was 210.9MB in the beginning and 189.4MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 855853.49ms. Allocated memory was 275.8MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 188.9MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 3.0GB. 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: 201]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 201). Cancelled while NwaCegarLoop was constructing difference of abstraction (22636states) and FLOYD_HOARE automaton (currently 500 states, 80 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 578 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 855.8s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 773.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 66549 SdHoareTripleChecker+Valid, 65.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66549 mSDsluCounter, 119035 SdHoareTripleChecker+Invalid, 59.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112938 mSDsCounter, 1289 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70079 IncrementalHoareTripleChecker+Invalid, 71369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1289 mSolverCounterUnsat, 6097 mSDtfsCounter, 70079 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5892 GetRequests, 2540 SyntacticMatches, 14 SemanticMatches, 3337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439744 ImplicationChecksByTransitivity, 728.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98049occurred in iteration=16, InterpolantAutomatonStates: 2278, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.2s AutomataMinimizationTime, 32 MinimizatonAttempts, 672912 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 62.7s InterpolantComputationTime, 3868 NumberOfCodeBlocks, 3868 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 5255 ConstructedInterpolants, 5 QuantifiedInterpolants, 98593 SizeOfPredicates, 152 NumberOfNonLiveVariables, 5422 ConjunctsInSsa, 401 ConjunctsInUnsatCore, 63 InterpolantComputations, 18 PerfectInterpolantSequences, 1124/3203 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