/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/pals_floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:00:48,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:00:48,806 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:00:48,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:00:48,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:00:48,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:00:48,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:00:48,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:00:48,861 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:00:48,865 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:00:48,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:00:48,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:00:48,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:00:48,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:00:48,878 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:00:48,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:00:48,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:00:48,878 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:00:48,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:00:48,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:00:48,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:00:48,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:00:48,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:00:48,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:00:48,881 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:00:48,881 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:00:48,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:00:48,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:00:48,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:00:48,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:00:48,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:00:48,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:00:48,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:00:48,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:00:48,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:00:48,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:00:48,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:00:48,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:00:48,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:00:48,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:00:48,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:00:48,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:00:48,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:00:48,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:00:49,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:00:49,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:00:49,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:00:49,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:00:49,150 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:00:49,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-16 06:00:50,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:00:50,761 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:00:50,762 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-16 06:00:50,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930012913/0029800e825e4e2eb1e4dca0a6006f3e/FLAGadc59c6a1 [2023-12-16 06:00:50,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930012913/0029800e825e4e2eb1e4dca0a6006f3e [2023-12-16 06:00:50,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:00:50,791 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:00:50,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:00:50,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:00:50,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:00:50,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:00:50" (1/1) ... [2023-12-16 06:00:50,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25073517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:50, skipping insertion in model container [2023-12-16 06:00:50,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:00:50" (1/1) ... [2023-12-16 06:00:50,843 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:00:51,052 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/pals_floodmax.3.ufo.BOUNDED-6.pals.c[12762,12775] [2023-12-16 06:00:51,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:00:51,070 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:00:51,115 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/pals_floodmax.3.ufo.BOUNDED-6.pals.c[12762,12775] [2023-12-16 06:00:51,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:00:51,133 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:00:51,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51 WrapperNode [2023-12-16 06:00:51,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:00:51,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:00:51,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:00:51,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:00:51,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,218 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2023-12-16 06:00:51,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:00:51,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:00:51,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:00:51,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:00:51,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,263 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]. [2023-12-16 06:00:51,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:00:51,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:00:51,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:00:51,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:00:51,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (1/1) ... [2023-12-16 06:00:51,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:00:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:51,330 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) [2023-12-16 06:00:51,356 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 [2023-12-16 06:00:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:00:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:00:51,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:00:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:00:51,500 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:00:51,502 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:00:52,121 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:00:52,171 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:00:52,172 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 06:00:52,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:00:52 BoogieIcfgContainer [2023-12-16 06:00:52,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:00:52,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:00:52,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:00:52,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:00:52,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:00:50" (1/3) ... [2023-12-16 06:00:52,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776da480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:00:52, skipping insertion in model container [2023-12-16 06:00:52,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:51" (2/3) ... [2023-12-16 06:00:52,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776da480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:00:52, skipping insertion in model container [2023-12-16 06:00:52,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:00:52" (3/3) ... [2023-12-16 06:00:52,181 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-16 06:00:52,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:00:52,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:00:52,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:00:52,282 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;@5c458b59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:00:52,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:00:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 06:00:52,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:52,301 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] [2023-12-16 06:00:52,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:52,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1477667755, now seen corresponding path program 1 times [2023-12-16 06:00:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:52,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980456567] [2023-12-16 06:00:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:52,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:52,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:52,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980456567] [2023-12-16 06:00:52,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980456567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:52,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:52,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:00:52,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960655242] [2023-12-16 06:00:52,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:52,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:00:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:52,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:00:52,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:00:52,562 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:52,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:52,614 INFO L93 Difference]: Finished difference Result 174 states and 308 transitions. [2023-12-16 06:00:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:00:52,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 06:00:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:52,626 INFO L225 Difference]: With dead ends: 174 [2023-12-16 06:00:52,626 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 06:00:52,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:00:52,633 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:52,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:52,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 06:00:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-16 06:00:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7927927927927927) internal successors, (199), 111 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 199 transitions. [2023-12-16 06:00:52,679 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 199 transitions. Word has length 34 [2023-12-16 06:00:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:52,679 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 199 transitions. [2023-12-16 06:00:52,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 199 transitions. [2023-12-16 06:00:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 06:00:52,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:52,683 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] [2023-12-16 06:00:52,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:00:52,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:52,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash -211275987, now seen corresponding path program 1 times [2023-12-16 06:00:52,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:52,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263886254] [2023-12-16 06:00:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:52,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:52,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:52,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263886254] [2023-12-16 06:00:52,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263886254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:52,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:52,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:52,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673290583] [2023-12-16 06:00:52,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:52,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:52,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:52,939 INFO L87 Difference]: Start difference. First operand 112 states and 199 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:53,036 INFO L93 Difference]: Finished difference Result 229 states and 400 transitions. [2023-12-16 06:00:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:53,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 06:00:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:53,040 INFO L225 Difference]: With dead ends: 229 [2023-12-16 06:00:53,040 INFO L226 Difference]: Without dead ends: 169 [2023-12-16 06:00:53,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:53,043 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 98 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:53,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 552 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:00:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-16 06:00:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 112. [2023-12-16 06:00:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 111 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 172 transitions. [2023-12-16 06:00:53,051 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 172 transitions. Word has length 34 [2023-12-16 06:00:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:53,052 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 172 transitions. [2023-12-16 06:00:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 172 transitions. [2023-12-16 06:00:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 06:00:53,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:53,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:53,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:00:53,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:53,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -985754314, now seen corresponding path program 1 times [2023-12-16 06:00:53,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:53,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097230780] [2023-12-16 06:00:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:53,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:53,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:53,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097230780] [2023-12-16 06:00:53,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097230780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:53,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:53,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:00:53,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468717914] [2023-12-16 06:00:53,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:53,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:00:53,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:00:53,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:53,169 INFO L87 Difference]: Start difference. First operand 112 states and 172 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2023-12-16 06:00:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:53,207 INFO L93 Difference]: Finished difference Result 217 states and 353 transitions. [2023-12-16 06:00:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:00:53,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 60 [2023-12-16 06:00:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:53,210 INFO L225 Difference]: With dead ends: 217 [2023-12-16 06:00:53,210 INFO L226 Difference]: Without dead ends: 160 [2023-12-16 06:00:53,213 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 [2023-12-16 06:00:53,215 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 74 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:53,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 363 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:53,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-16 06:00:53,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2023-12-16 06:00:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.5796178343949046) internal successors, (248), 157 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 248 transitions. [2023-12-16 06:00:53,228 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 248 transitions. Word has length 60 [2023-12-16 06:00:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:53,232 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 248 transitions. [2023-12-16 06:00:53,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2023-12-16 06:00:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 248 transitions. [2023-12-16 06:00:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:00:53,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:53,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:53,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:00:53,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:53,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1305875761, now seen corresponding path program 1 times [2023-12-16 06:00:53,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:53,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835571849] [2023-12-16 06:00:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:53,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835571849] [2023-12-16 06:00:53,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835571849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:53,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:53,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:00:53,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594412636] [2023-12-16 06:00:53,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:53,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:00:53,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:53,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:00:53,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:53,495 INFO L87 Difference]: Start difference. First operand 158 states and 248 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) [2023-12-16 06:00:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:53,520 INFO L93 Difference]: Finished difference Result 263 states and 429 transitions. [2023-12-16 06:00:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:00:53,520 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 [2023-12-16 06:00:53,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:53,522 INFO L225 Difference]: With dead ends: 263 [2023-12-16 06:00:53,522 INFO L226 Difference]: Without dead ends: 206 [2023-12-16 06:00:53,525 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 [2023-12-16 06:00:53,531 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 83 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 389 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 [2023-12-16 06:00:53,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 389 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-16 06:00:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2023-12-16 06:00:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.6108374384236452) internal successors, (327), 203 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 327 transitions. [2023-12-16 06:00:53,546 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 327 transitions. Word has length 62 [2023-12-16 06:00:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:53,546 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 327 transitions. [2023-12-16 06:00:53,546 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) [2023-12-16 06:00:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 327 transitions. [2023-12-16 06:00:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:00:53,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:53,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:53,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:00:53,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:53,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1944934066, now seen corresponding path program 1 times [2023-12-16 06:00:53,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:53,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586175485] [2023-12-16 06:00:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:53,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:53,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:53,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586175485] [2023-12-16 06:00:53,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586175485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:53,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:53,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:00:53,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837419561] [2023-12-16 06:00:53,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:53,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:00:53,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:53,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:00:53,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:53,681 INFO L87 Difference]: Start difference. First operand 204 states and 327 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) [2023-12-16 06:00:53,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:53,704 INFO L93 Difference]: Finished difference Result 477 states and 792 transitions. [2023-12-16 06:00:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:00:53,705 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 [2023-12-16 06:00:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:53,708 INFO L225 Difference]: With dead ends: 477 [2023-12-16 06:00:53,708 INFO L226 Difference]: Without dead ends: 330 [2023-12-16 06:00:53,710 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 [2023-12-16 06:00:53,711 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 76 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:53,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 376 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-16 06:00:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2023-12-16 06:00:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.6391437308868502) internal successors, (536), 327 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 536 transitions. [2023-12-16 06:00:53,738 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 536 transitions. Word has length 62 [2023-12-16 06:00:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:53,740 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 536 transitions. [2023-12-16 06:00:53,740 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) [2023-12-16 06:00:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 536 transitions. [2023-12-16 06:00:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 06:00:53,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:53,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:53,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:00:53,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:53,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:53,743 INFO L85 PathProgramCache]: Analyzing trace with hash -386894903, now seen corresponding path program 1 times [2023-12-16 06:00:53,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:53,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383402939] [2023-12-16 06:00:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:53,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:53,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:53,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383402939] [2023-12-16 06:00:53,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383402939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:53,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:53,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:00:53,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810748252] [2023-12-16 06:00:53,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:53,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:00:53,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:00:53,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:53,851 INFO L87 Difference]: Start difference. First operand 328 states and 536 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) [2023-12-16 06:00:53,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:53,874 INFO L93 Difference]: Finished difference Result 595 states and 989 transitions. [2023-12-16 06:00:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:00:53,874 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 [2023-12-16 06:00:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:53,876 INFO L225 Difference]: With dead ends: 595 [2023-12-16 06:00:53,877 INFO L226 Difference]: Without dead ends: 448 [2023-12-16 06:00:53,877 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 [2023-12-16 06:00:53,878 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 77 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 381 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 [2023-12-16 06:00:53,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 381 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-16 06:00:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2023-12-16 06:00:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.644943820224719) internal successors, (732), 445 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 732 transitions. [2023-12-16 06:00:53,904 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 732 transitions. Word has length 64 [2023-12-16 06:00:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:53,905 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 732 transitions. [2023-12-16 06:00:53,905 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) [2023-12-16 06:00:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 732 transitions. [2023-12-16 06:00:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 06:00:53,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:53,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:53,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:00:53,907 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:53,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash 892182118, now seen corresponding path program 1 times [2023-12-16 06:00:53,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:53,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4769737] [2023-12-16 06:00:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:53,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4769737] [2023-12-16 06:00:54,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4769737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:54,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:54,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:00:54,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121943908] [2023-12-16 06:00:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:54,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:00:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:54,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:00:54,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:54,013 INFO L87 Difference]: Start difference. First operand 446 states and 732 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) [2023-12-16 06:00:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:54,042 INFO L93 Difference]: Finished difference Result 1149 states and 1913 transitions. [2023-12-16 06:00:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:00:54,043 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 [2023-12-16 06:00:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:54,047 INFO L225 Difference]: With dead ends: 1149 [2023-12-16 06:00:54,061 INFO L226 Difference]: Without dead ends: 766 [2023-12-16 06:00:54,062 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 [2023-12-16 06:00:54,064 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 70 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:54,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:54,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-12-16 06:00:54,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 764. [2023-12-16 06:00:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 1.6435124508519003) internal successors, (1254), 763 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1254 transitions. [2023-12-16 06:00:54,088 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1254 transitions. Word has length 64 [2023-12-16 06:00:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:54,089 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 1254 transitions. [2023-12-16 06:00:54,090 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) [2023-12-16 06:00:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1254 transitions. [2023-12-16 06:00:54,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 06:00:54,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:54,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:54,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:00:54,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:54,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash 539603809, now seen corresponding path program 1 times [2023-12-16 06:00:54,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:54,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505494510] [2023-12-16 06:00:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:54,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:54,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:54,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505494510] [2023-12-16 06:00:54,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505494510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:54,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:54,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:00:54,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610257565] [2023-12-16 06:00:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:54,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:00:54,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:00:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:54,191 INFO L87 Difference]: Start difference. First operand 764 states and 1254 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:54,254 INFO L93 Difference]: Finished difference Result 1437 states and 2381 transitions. [2023-12-16 06:00:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:00:54,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-16 06:00:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:54,259 INFO L225 Difference]: With dead ends: 1437 [2023-12-16 06:00:54,259 INFO L226 Difference]: Without dead ends: 1054 [2023-12-16 06:00:54,259 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 [2023-12-16 06:00:54,260 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 71 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 373 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 [2023-12-16 06:00:54,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 373 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-12-16 06:00:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1052. [2023-12-16 06:00:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.637488106565176) internal successors, (1721), 1051 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1721 transitions. [2023-12-16 06:00:54,291 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1721 transitions. Word has length 66 [2023-12-16 06:00:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:54,291 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1721 transitions. [2023-12-16 06:00:54,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1721 transitions. [2023-12-16 06:00:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 06:00:54,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:54,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:00:54,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:54,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1422478210, now seen corresponding path program 1 times [2023-12-16 06:00:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352922445] [2023-12-16 06:00:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:54,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352922445] [2023-12-16 06:00:54,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352922445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:54,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:54,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:54,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954784148] [2023-12-16 06:00:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:54,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:54,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:54,381 INFO L87 Difference]: Start difference. First operand 1052 states and 1721 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:54,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:54,579 INFO L93 Difference]: Finished difference Result 5336 states and 8927 transitions. [2023-12-16 06:00:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:00:54,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-16 06:00:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:54,598 INFO L225 Difference]: With dead ends: 5336 [2023-12-16 06:00:54,599 INFO L226 Difference]: Without dead ends: 4353 [2023-12-16 06:00:54,604 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 [2023-12-16 06:00:54,606 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 576 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:54,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1062 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:00:54,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2023-12-16 06:00:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 1969. [2023-12-16 06:00:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.6346544715447155) internal successors, (3217), 1968 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 3217 transitions. [2023-12-16 06:00:54,682 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 3217 transitions. Word has length 66 [2023-12-16 06:00:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:54,683 INFO L495 AbstractCegarLoop]: Abstraction has 1969 states and 3217 transitions. [2023-12-16 06:00:54,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 3217 transitions. [2023-12-16 06:00:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 06:00:54,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:54,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:54,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:00:54,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:54,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1209872637, now seen corresponding path program 1 times [2023-12-16 06:00:54,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726730339] [2023-12-16 06:00:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:54,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:54,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726730339] [2023-12-16 06:00:54,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726730339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:54,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:54,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:54,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990731085] [2023-12-16 06:00:54,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:54,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:54,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:54,780 INFO L87 Difference]: Start difference. First operand 1969 states and 3217 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:54,920 INFO L93 Difference]: Finished difference Result 6431 states and 10655 transitions. [2023-12-16 06:00:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-16 06:00:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:54,938 INFO L225 Difference]: With dead ends: 6431 [2023-12-16 06:00:54,938 INFO L226 Difference]: Without dead ends: 4531 [2023-12-16 06:00:54,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:54,947 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 280 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:54,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 542 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:00:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2023-12-16 06:00:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 3231. [2023-12-16 06:00:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3230 states have (on average 1.6368421052631579) internal successors, (5287), 3230 states have internal predecessors, (5287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 5287 transitions. [2023-12-16 06:00:55,091 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 5287 transitions. Word has length 67 [2023-12-16 06:00:55,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:55,092 INFO L495 AbstractCegarLoop]: Abstraction has 3231 states and 5287 transitions. [2023-12-16 06:00:55,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 5287 transitions. [2023-12-16 06:00:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 06:00:55,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:55,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:55,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:00:55,093 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:55,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1091384583, now seen corresponding path program 1 times [2023-12-16 06:00:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:55,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114863270] [2023-12-16 06:00:55,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:55,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:55,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:55,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114863270] [2023-12-16 06:00:55,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114863270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:55,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:55,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:55,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687235053] [2023-12-16 06:00:55,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:55,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:55,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:55,206 INFO L87 Difference]: Start difference. First operand 3231 states and 5287 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:55,395 INFO L93 Difference]: Finished difference Result 10391 states and 17091 transitions. [2023-12-16 06:00:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:55,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-16 06:00:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:55,425 INFO L225 Difference]: With dead ends: 10391 [2023-12-16 06:00:55,425 INFO L226 Difference]: Without dead ends: 7229 [2023-12-16 06:00:55,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:55,432 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 278 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:55,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 539 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:00:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7229 states. [2023-12-16 06:00:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7229 to 5201. [2023-12-16 06:00:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 1.6259615384615385) internal successors, (8455), 5200 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 8455 transitions. [2023-12-16 06:00:55,621 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 8455 transitions. Word has length 68 [2023-12-16 06:00:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:55,621 INFO L495 AbstractCegarLoop]: Abstraction has 5201 states and 8455 transitions. [2023-12-16 06:00:55,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 8455 transitions. [2023-12-16 06:00:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 06:00:55,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:55,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:55,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:00:55,623 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:55,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash -578633876, now seen corresponding path program 1 times [2023-12-16 06:00:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:55,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789982318] [2023-12-16 06:00:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:55,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:55,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789982318] [2023-12-16 06:00:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789982318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:55,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159339850] [2023-12-16 06:00:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:55,766 INFO L87 Difference]: Start difference. First operand 5201 states and 8455 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:56,080 INFO L93 Difference]: Finished difference Result 16423 states and 26807 transitions. [2023-12-16 06:00:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:56,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-16 06:00:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:56,120 INFO L225 Difference]: With dead ends: 16423 [2023-12-16 06:00:56,120 INFO L226 Difference]: Without dead ends: 11291 [2023-12-16 06:00:56,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:56,136 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 276 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:56,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 541 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:00:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11291 states. [2023-12-16 06:00:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11291 to 8203. [2023-12-16 06:00:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 8202 states have (on average 1.6146061936113143) internal successors, (13243), 8202 states have internal predecessors, (13243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 13243 transitions. [2023-12-16 06:00:56,418 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 13243 transitions. Word has length 69 [2023-12-16 06:00:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:56,418 INFO L495 AbstractCegarLoop]: Abstraction has 8203 states and 13243 transitions. [2023-12-16 06:00:56,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 13243 transitions. [2023-12-16 06:00:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 06:00:56,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:56,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:56,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:00:56,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:56,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 802275316, now seen corresponding path program 1 times [2023-12-16 06:00:56,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:56,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024196950] [2023-12-16 06:00:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:56,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024196950] [2023-12-16 06:00:56,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024196950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:56,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:56,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470148001] [2023-12-16 06:00:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:56,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:56,678 INFO L87 Difference]: Start difference. First operand 8203 states and 13243 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:56,915 INFO L93 Difference]: Finished difference Result 16339 states and 26396 transitions. [2023-12-16 06:00:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-16 06:00:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:56,935 INFO L225 Difference]: With dead ends: 16339 [2023-12-16 06:00:56,935 INFO L226 Difference]: Without dead ends: 8205 [2023-12-16 06:00:56,950 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 [2023-12-16 06:00:56,951 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 70 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:56,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 593 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8205 states. [2023-12-16 06:00:57,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8205 to 8203. [2023-12-16 06:00:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 8202 states have (on average 1.599366008290661) internal successors, (13118), 8202 states have internal predecessors, (13118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 13118 transitions. [2023-12-16 06:00:57,225 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 13118 transitions. Word has length 71 [2023-12-16 06:00:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:57,225 INFO L495 AbstractCegarLoop]: Abstraction has 8203 states and 13118 transitions. [2023-12-16 06:00:57,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 13118 transitions. [2023-12-16 06:00:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:00:57,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:57,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:57,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:00:57,227 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:57,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1920185732, now seen corresponding path program 1 times [2023-12-16 06:00:57,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:57,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438690503] [2023-12-16 06:00:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:57,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:57,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438690503] [2023-12-16 06:00:57,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438690503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:57,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082363391] [2023-12-16 06:00:57,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:57,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:57,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:57,433 INFO L87 Difference]: Start difference. First operand 8203 states and 13118 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:57,738 INFO L93 Difference]: Finished difference Result 23501 states and 37734 transitions. [2023-12-16 06:00:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:57,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-16 06:00:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:57,776 INFO L225 Difference]: With dead ends: 23501 [2023-12-16 06:00:57,776 INFO L226 Difference]: Without dead ends: 15367 [2023-12-16 06:00:57,793 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 [2023-12-16 06:00:57,794 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 135 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:57,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 455 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2023-12-16 06:00:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 15365. [2023-12-16 06:00:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15365 states, 15364 states have (on average 1.582725852642541) internal successors, (24317), 15364 states have internal predecessors, (24317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15365 states to 15365 states and 24317 transitions. [2023-12-16 06:00:58,259 INFO L78 Accepts]: Start accepts. Automaton has 15365 states and 24317 transitions. Word has length 74 [2023-12-16 06:00:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:58,259 INFO L495 AbstractCegarLoop]: Abstraction has 15365 states and 24317 transitions. [2023-12-16 06:00:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 15365 states and 24317 transitions. [2023-12-16 06:00:58,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:00:58,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:58,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:58,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:00:58,261 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:58,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash -618303701, now seen corresponding path program 1 times [2023-12-16 06:00:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:58,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483653743] [2023-12-16 06:00:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:58,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:58,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483653743] [2023-12-16 06:00:58,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483653743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:58,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:58,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:58,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542319013] [2023-12-16 06:00:58,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:58,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:58,437 INFO L87 Difference]: Start difference. First operand 15365 states and 24317 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:58,726 INFO L93 Difference]: Finished difference Result 16453 states and 25766 transitions. [2023-12-16 06:00:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:58,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 06:00:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:58,766 INFO L225 Difference]: With dead ends: 16453 [2023-12-16 06:00:58,767 INFO L226 Difference]: Without dead ends: 16451 [2023-12-16 06:00:58,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:58,776 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:58,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 491 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:58,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16451 states. [2023-12-16 06:00:59,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16451 to 16089. [2023-12-16 06:00:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16089 states, 16088 states have (on average 1.555942317255097) internal successors, (25032), 16088 states have internal predecessors, (25032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16089 states to 16089 states and 25032 transitions. [2023-12-16 06:00:59,262 INFO L78 Accepts]: Start accepts. Automaton has 16089 states and 25032 transitions. Word has length 75 [2023-12-16 06:00:59,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:59,262 INFO L495 AbstractCegarLoop]: Abstraction has 16089 states and 25032 transitions. [2023-12-16 06:00:59,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16089 states and 25032 transitions. [2023-12-16 06:00:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:00:59,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:59,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:59,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:00:59,265 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:59,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2029578417, now seen corresponding path program 1 times [2023-12-16 06:00:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:59,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633817489] [2023-12-16 06:00:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:59,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633817489] [2023-12-16 06:00:59,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633817489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:59,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:59,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:00:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329272082] [2023-12-16 06:00:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:59,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:00:59,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:00:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:59,404 INFO L87 Difference]: Start difference. First operand 16089 states and 25032 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:59,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:59,928 INFO L93 Difference]: Finished difference Result 48009 states and 74629 transitions. [2023-12-16 06:00:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:00:59,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-16 06:00:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:00,022 INFO L225 Difference]: With dead ends: 48009 [2023-12-16 06:01:00,022 INFO L226 Difference]: Without dead ends: 31985 [2023-12-16 06:01:00,053 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 [2023-12-16 06:01:00,054 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 110 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:00,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 399 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31985 states. [2023-12-16 06:01:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31985 to 31983. [2023-12-16 06:01:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31983 states, 31982 states have (on average 1.5403039209555376) internal successors, (49262), 31982 states have internal predecessors, (49262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31983 states to 31983 states and 49262 transitions. [2023-12-16 06:01:01,146 INFO L78 Accepts]: Start accepts. Automaton has 31983 states and 49262 transitions. Word has length 99 [2023-12-16 06:01:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:01,147 INFO L495 AbstractCegarLoop]: Abstraction has 31983 states and 49262 transitions. [2023-12-16 06:01:01,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 31983 states and 49262 transitions. [2023-12-16 06:01:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:01,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:01,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:01:01,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:01:01,151 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:01,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:01,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1881455852, now seen corresponding path program 1 times [2023-12-16 06:01:01,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:01,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832435629] [2023-12-16 06:01:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:01,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 06:01:01,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:01,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832435629] [2023-12-16 06:01:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832435629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:01,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:01,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:01,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690960568] [2023-12-16 06:01:01,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:01,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:01,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:01,236 INFO L87 Difference]: Start difference. First operand 31983 states and 49262 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:02,483 INFO L93 Difference]: Finished difference Result 95477 states and 146924 transitions. [2023-12-16 06:01:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-16 06:01:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:02,752 INFO L225 Difference]: With dead ends: 95477 [2023-12-16 06:01:02,752 INFO L226 Difference]: Without dead ends: 63592 [2023-12-16 06:01:02,804 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 [2023-12-16 06:01:02,805 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 95 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:02,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 374 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:02,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63592 states. [2023-12-16 06:01:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63592 to 63590. [2023-12-16 06:01:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63590 states, 63589 states have (on average 1.524508955951501) internal successors, (96942), 63589 states have internal predecessors, (96942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63590 states to 63590 states and 96942 transitions. [2023-12-16 06:01:04,876 INFO L78 Accepts]: Start accepts. Automaton has 63590 states and 96942 transitions. Word has length 99 [2023-12-16 06:01:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:04,878 INFO L495 AbstractCegarLoop]: Abstraction has 63590 states and 96942 transitions. [2023-12-16 06:01:04,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 63590 states and 96942 transitions. [2023-12-16 06:01:04,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:04,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:04,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:01:04,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:01:04,891 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:04,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:04,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1491540327, now seen corresponding path program 1 times [2023-12-16 06:01:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:04,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738777462] [2023-12-16 06:01:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 06:01:04,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:04,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738777462] [2023-12-16 06:01:04,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738777462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:04,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:04,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:04,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991942056] [2023-12-16 06:01:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:04,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:04,969 INFO L87 Difference]: Start difference. First operand 63590 states and 96942 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:06,827 INFO L93 Difference]: Finished difference Result 189890 states and 289215 transitions. [2023-12-16 06:01:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:06,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 99 [2023-12-16 06:01:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:07,312 INFO L225 Difference]: With dead ends: 189890 [2023-12-16 06:01:07,313 INFO L226 Difference]: Without dead ends: 126472 [2023-12-16 06:01:07,424 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 [2023-12-16 06:01:07,425 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 109 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:07,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 389 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126472 states. [2023-12-16 06:01:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126472 to 126470. [2023-12-16 06:01:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126470 states, 126469 states have (on average 1.508598945196056) internal successors, (190791), 126469 states have internal predecessors, (190791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126470 states to 126470 states and 190791 transitions. [2023-12-16 06:01:11,206 INFO L78 Accepts]: Start accepts. Automaton has 126470 states and 190791 transitions. Word has length 99 [2023-12-16 06:01:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:11,206 INFO L495 AbstractCegarLoop]: Abstraction has 126470 states and 190791 transitions. [2023-12-16 06:01:11,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:11,207 INFO L276 IsEmpty]: Start isEmpty. Operand 126470 states and 190791 transitions. [2023-12-16 06:01:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:11,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:11,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:01:11,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:01:11,417 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:11,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash 782589003, now seen corresponding path program 1 times [2023-12-16 06:01:11,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:11,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782029660] [2023-12-16 06:01:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:11,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:01:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782029660] [2023-12-16 06:01:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782029660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:11,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461599960] [2023-12-16 06:01:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:11,500 INFO L87 Difference]: Start difference. First operand 126470 states and 190791 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:15,183 INFO L93 Difference]: Finished difference Result 377614 states and 569134 transitions. [2023-12-16 06:01:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:15,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-16 06:01:15,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:15,878 INFO L225 Difference]: With dead ends: 377614 [2023-12-16 06:01:15,878 INFO L226 Difference]: Without dead ends: 251544 [2023-12-16 06:01:16,019 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 [2023-12-16 06:01:16,019 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 129 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:16,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 405 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251544 states. [2023-12-16 06:01:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251544 to 251542. [2023-12-16 06:01:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251542 states, 251541 states have (on average 1.492559861016693) internal successors, (375440), 251541 states have internal predecessors, (375440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251542 states to 251542 states and 375440 transitions. [2023-12-16 06:01:23,192 INFO L78 Accepts]: Start accepts. Automaton has 251542 states and 375440 transitions. Word has length 99 [2023-12-16 06:01:23,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:23,193 INFO L495 AbstractCegarLoop]: Abstraction has 251542 states and 375440 transitions. [2023-12-16 06:01:23,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand 251542 states and 375440 transitions. [2023-12-16 06:01:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:23,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:23,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:01:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:01:23,255 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:23,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1206235725, now seen corresponding path program 1 times [2023-12-16 06:01:23,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:23,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342872259] [2023-12-16 06:01:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:01:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342872259] [2023-12-16 06:01:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342872259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:23,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22276614] [2023-12-16 06:01:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:23,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:23,409 INFO L87 Difference]: Start difference. First operand 251542 states and 375440 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:27,327 INFO L93 Difference]: Finished difference Result 377990 states and 562842 transitions. [2023-12-16 06:01:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:27,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-16 06:01:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:28,000 INFO L225 Difference]: With dead ends: 377990 [2023-12-16 06:01:28,001 INFO L226 Difference]: Without dead ends: 251888 [2023-12-16 06:01:28,092 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 [2023-12-16 06:01:28,097 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 100 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 434 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 [2023-12-16 06:01:28,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251888 states. [2023-12-16 06:01:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251888 to 251886. [2023-12-16 06:01:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251886 states, 251885 states have (on average 1.4786589118049904) internal successors, (372452), 251885 states have internal predecessors, (372452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251886 states to 251886 states and 372452 transitions. [2023-12-16 06:01:34,528 INFO L78 Accepts]: Start accepts. Automaton has 251886 states and 372452 transitions. Word has length 99 [2023-12-16 06:01:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:34,528 INFO L495 AbstractCegarLoop]: Abstraction has 251886 states and 372452 transitions. [2023-12-16 06:01:34,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 251886 states and 372452 transitions. [2023-12-16 06:01:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:34,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:34,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:01:34,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 06:01:34,566 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:34,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash 195118475, now seen corresponding path program 1 times [2023-12-16 06:01:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:34,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448595939] [2023-12-16 06:01:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:34,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:01:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448595939] [2023-12-16 06:01:34,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448595939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:34,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:34,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:34,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215207705] [2023-12-16 06:01:34,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:34,640 INFO L87 Difference]: Start difference. First operand 251886 states and 372452 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:38,805 INFO L93 Difference]: Finished difference Result 378534 states and 558401 transitions. [2023-12-16 06:01:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:38,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-16 06:01:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:39,568 INFO L225 Difference]: With dead ends: 378534 [2023-12-16 06:01:39,568 INFO L226 Difference]: Without dead ends: 252464 [2023-12-16 06:01:39,678 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 [2023-12-16 06:01:39,686 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 114 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 452 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 [2023-12-16 06:01:39,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252464 states. [2023-12-16 06:01:45,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252464 to 252462. [2023-12-16 06:01:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252462 states, 252461 states have (on average 1.4645232332914786) internal successors, (369735), 252461 states have internal predecessors, (369735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252462 states to 252462 states and 369735 transitions. [2023-12-16 06:01:46,843 INFO L78 Accepts]: Start accepts. Automaton has 252462 states and 369735 transitions. Word has length 99 [2023-12-16 06:01:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:46,844 INFO L495 AbstractCegarLoop]: Abstraction has 252462 states and 369735 transitions. [2023-12-16 06:01:46,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 252462 states and 369735 transitions. [2023-12-16 06:01:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:46,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:46,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:01:46,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:01:46,909 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:46,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:46,910 INFO L85 PathProgramCache]: Analyzing trace with hash -614228151, now seen corresponding path program 1 times [2023-12-16 06:01:46,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:46,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288097296] [2023-12-16 06:01:46,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:46,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:01:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288097296] [2023-12-16 06:01:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288097296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:47,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:01:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650550945] [2023-12-16 06:01:47,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:47,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:01:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:47,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:01:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:01:47,040 INFO L87 Difference]: Start difference. First operand 252462 states and 369735 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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... [2023-12-16 06:01:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:01:47,124 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 [2023-12-16 06:01:47,125 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 163 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:47,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 440 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:47,126 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:01:47,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:01:47,127 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (252462states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (7017 states constructed, input type IntersectNwa). [2023-12-16 06:01:47,129 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 [2023-12-16 06:01:47,133 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] [2023-12-16 06:01:47,136 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:01:47,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:01:47 BoogieIcfgContainer [2023-12-16 06:01:47,138 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:01:47,139 INFO L158 Benchmark]: Toolchain (without parser) took 56348.06ms. Allocated memory was 324.0MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 275.0MB in the beginning and 4.7GB in the end (delta: -4.4GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-16 06:01:47,139 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 165.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:01:47,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.20ms. Allocated memory is still 324.0MB. Free memory was 275.0MB in the beginning and 258.1MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 06:01:47,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.01ms. Allocated memory is still 324.0MB. Free memory was 258.1MB in the beginning and 255.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:01:47,141 INFO L158 Benchmark]: Boogie Preprocessor took 73.19ms. Allocated memory is still 324.0MB. Free memory was 255.1MB in the beginning and 251.5MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:01:47,141 INFO L158 Benchmark]: RCFGBuilder took 879.03ms. Allocated memory is still 324.0MB. Free memory was 251.5MB in the beginning and 217.3MB in the end (delta: 34.2MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-16 06:01:47,142 INFO L158 Benchmark]: TraceAbstraction took 54963.56ms. Allocated memory was 324.0MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 216.3MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-12-16 06:01:47,145 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 165.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 342.20ms. Allocated memory is still 324.0MB. Free memory was 275.0MB in the beginning and 258.1MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 84.01ms. Allocated memory is still 324.0MB. Free memory was 258.1MB in the beginning and 255.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.19ms. Allocated memory is still 324.0MB. Free memory was 255.1MB in the beginning and 251.5MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 879.03ms. Allocated memory is still 324.0MB. Free memory was 251.5MB in the beginning and 217.3MB in the end (delta: 34.2MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 54963.56ms. Allocated memory was 324.0MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 216.3MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 3.1GB. 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: 555]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 555). Cancelled while NwaCegarLoop was constructing difference of abstraction (252462states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (7017 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.9s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 21.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2985 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2985 mSDsluCounter, 10116 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5544 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 627 IncrementalHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 4572 mSDtfsCounter, 627 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252462occurred in iteration=21, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 29.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 9247 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1629 NumberOfCodeBlocks, 1629 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1607 ConstructedInterpolants, 0 QuantifiedInterpolants, 4552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 114/114 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