/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:52:56,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:52:56,287 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:52:56,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:52:56,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:52:56,313 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:52:56,314 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:52:56,314 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:52:56,315 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:52:56,318 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:52:56,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:52:56,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:52:56,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:52:56,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:52:56,320 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:52:56,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:52:56,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:52:56,321 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:52:56,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:52:56,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:52:56,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:52:56,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:52:56,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:52:56,322 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:52:56,322 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:52:56,322 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:52:56,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:52:56,323 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:52:56,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:52:56,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:52:56,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:52:56,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:52:56,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:52:56,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:52:56,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:52:56,325 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:52:56,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:52:56,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:52:56,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:52:56,325 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:52:56,326 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:52:56,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:52:56,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:52:56,326 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:52:56,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:52:56,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:52:56,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:52:56,525 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:52:56,525 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:52:56,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02.c [2023-12-15 18:52:57,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:52:58,018 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:52:58,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label02.c [2023-12-15 18:52:58,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca909232d/2ca7dcb5bf914afeb5ad261e473c7819/FLAGace1f71d6 [2023-12-15 18:52:58,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca909232d/2ca7dcb5bf914afeb5ad261e473c7819 [2023-12-15 18:52:58,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:52:58,059 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:52:58,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:52:58,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:52:58,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:52:58,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:52:58" (1/1) ... [2023-12-15 18:52:58,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782ea651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:58, skipping insertion in model container [2023-12-15 18:52:58,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:52:58" (1/1) ... [2023-12-15 18:52:58,163 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:52:58,364 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label02.c[5671,5684] [2023-12-15 18:52:58,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:52:58,942 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:52:58,958 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label02.c[5671,5684] [2023-12-15 18:52:59,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:52:59,341 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:52:59,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59 WrapperNode [2023-12-15 18:52:59,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:52:59,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:52:59,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:52:59,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:52:59,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:52:59,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:52:59,773 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-15 18:52:59,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:52:59,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:52:59,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:52:59,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:52:59,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:52:59,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:52:59,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:53:00,050 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]. [2023-12-15 18:53:00,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:53:00,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:53:00,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:53:00,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:53:00,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:53:00,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:53:00,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:53:00,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:53:00,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:53:00,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:53:00,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (1/1) ... [2023-12-15 18:53:00,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:53:00,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:53:00,478 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) [2023-12-15 18:53:00,480 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 [2023-12-15 18:53:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:53:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:53:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:53:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:53:00,551 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:53:00,552 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:53:04,429 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:53:04,468 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:53:04,468 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:53:04,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:53:04 BoogieIcfgContainer [2023-12-15 18:53:04,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:53:04,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:53:04,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:53:04,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:53:04,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:52:58" (1/3) ... [2023-12-15 18:53:04,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228b300d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:53:04, skipping insertion in model container [2023-12-15 18:53:04,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:52:59" (2/3) ... [2023-12-15 18:53:04,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228b300d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:53:04, skipping insertion in model container [2023-12-15 18:53:04,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:53:04" (3/3) ... [2023-12-15 18:53:04,474 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label02.c [2023-12-15 18:53:04,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:53:04,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:53:04,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:53:04,536 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;@6863d66b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:53:04,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:53:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:04,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 18:53:04,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:04,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:04,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:04,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash -547071672, now seen corresponding path program 1 times [2023-12-15 18:53:04,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109449238] [2023-12-15 18:53:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:04,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:04,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109449238] [2023-12-15 18:53:04,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109449238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:04,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:04,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006942351] [2023-12-15 18:53:04,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:04,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:53:04,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:53:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:53:04,693 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:04,752 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-15 18:53:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:53:04,758 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-15 18:53:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:04,793 INFO L225 Difference]: With dead ends: 2071 [2023-12-15 18:53:04,793 INFO L226 Difference]: Without dead ends: 1034 [2023-12-15 18:53:04,798 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 [2023-12-15 18:53:04,800 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:04,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:53:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-15 18:53:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-15 18:53:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-15 18:53:04,879 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 38 [2023-12-15 18:53:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:04,880 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-15 18:53:04,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-15 18:53:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 18:53:04,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:04,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:04,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:53:04,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:04,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1750479704, now seen corresponding path program 1 times [2023-12-15 18:53:04,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:04,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227720015] [2023-12-15 18:53:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:04,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:05,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:05,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227720015] [2023-12-15 18:53:05,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227720015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:05,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:05,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:53:05,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427459909] [2023-12-15 18:53:05,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:05,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:53:05,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:05,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:53:05,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:53:05,157 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:10,189 INFO L93 Difference]: Finished difference Result 3696 states and 6823 transitions. [2023-12-15 18:53:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:53:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-15 18:53:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:10,198 INFO L225 Difference]: With dead ends: 3696 [2023-12-15 18:53:10,198 INFO L226 Difference]: Without dead ends: 2663 [2023-12-15 18:53:10,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:53:10,200 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 2684 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:10,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2684 Valid, 1017 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-15 18:53:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-12-15 18:53:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2662. [2023-12-15 18:53:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.4611048478015785) internal successors, (3888), 2661 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3888 transitions. [2023-12-15 18:53:10,243 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3888 transitions. Word has length 38 [2023-12-15 18:53:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:10,244 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3888 transitions. [2023-12-15 18:53:10,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3888 transitions. [2023-12-15 18:53:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 18:53:10,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:10,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:53:10,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:10,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash 398849616, now seen corresponding path program 1 times [2023-12-15 18:53:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:10,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104020512] [2023-12-15 18:53:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:10,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104020512] [2023-12-15 18:53:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104020512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:10,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:10,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:53:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326802636] [2023-12-15 18:53:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:10,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:53:10,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:53:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:53:10,506 INFO L87 Difference]: Start difference. First operand 2662 states and 3888 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:15,542 INFO L93 Difference]: Finished difference Result 7863 states and 12668 transitions. [2023-12-15 18:53:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:53:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-15 18:53:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:15,576 INFO L225 Difference]: With dead ends: 7863 [2023-12-15 18:53:15,577 INFO L226 Difference]: Without dead ends: 5989 [2023-12-15 18:53:15,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:53:15,606 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1717 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 6127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:15,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 1066 Invalid, 6127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 5284 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-15 18:53:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2023-12-15 18:53:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5858. [2023-12-15 18:53:15,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5857 states have (on average 1.4452791531500768) internal successors, (8465), 5857 states have internal predecessors, (8465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8465 transitions. [2023-12-15 18:53:15,792 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8465 transitions. Word has length 163 [2023-12-15 18:53:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:15,799 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 8465 transitions. [2023-12-15 18:53:15,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8465 transitions. [2023-12-15 18:53:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-15 18:53:15,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:15,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:15,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:53:15,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:15,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -371485884, now seen corresponding path program 1 times [2023-12-15 18:53:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:15,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182928603] [2023-12-15 18:53:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:15,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 18:53:16,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:16,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182928603] [2023-12-15 18:53:16,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182928603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:16,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:16,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718775437] [2023-12-15 18:53:16,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:16,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:16,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:16,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:16,150 INFO L87 Difference]: Start difference. First operand 5858 states and 8465 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:19,116 INFO L93 Difference]: Finished difference Result 15684 states and 23388 transitions. [2023-12-15 18:53:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 205 [2023-12-15 18:53:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:19,146 INFO L225 Difference]: With dead ends: 15684 [2023-12-15 18:53:19,147 INFO L226 Difference]: Without dead ends: 10614 [2023-12-15 18:53:19,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:19,168 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 918 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:19,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 914 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:53:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10614 states. [2023-12-15 18:53:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10614 to 10607. [2023-12-15 18:53:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10607 states, 10606 states have (on average 1.3551763152932303) internal successors, (14373), 10606 states have internal predecessors, (14373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10607 states to 10607 states and 14373 transitions. [2023-12-15 18:53:19,324 INFO L78 Accepts]: Start accepts. Automaton has 10607 states and 14373 transitions. Word has length 205 [2023-12-15 18:53:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:19,325 INFO L495 AbstractCegarLoop]: Abstraction has 10607 states and 14373 transitions. [2023-12-15 18:53:19,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:19,326 INFO L276 IsEmpty]: Start isEmpty. Operand 10607 states and 14373 transitions. [2023-12-15 18:53:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-15 18:53:19,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:19,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:19,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:53:19,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:19,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:19,330 INFO L85 PathProgramCache]: Analyzing trace with hash 701803943, now seen corresponding path program 1 times [2023-12-15 18:53:19,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:19,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738751758] [2023-12-15 18:53:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:19,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-15 18:53:19,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:19,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738751758] [2023-12-15 18:53:19,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738751758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:19,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:19,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:19,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244526806] [2023-12-15 18:53:19,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:19,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:19,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:19,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:19,531 INFO L87 Difference]: Start difference. First operand 10607 states and 14373 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:22,511 INFO L93 Difference]: Finished difference Result 28348 states and 39238 transitions. [2023-12-15 18:53:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:22,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 219 [2023-12-15 18:53:22,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:22,573 INFO L225 Difference]: With dead ends: 28348 [2023-12-15 18:53:22,573 INFO L226 Difference]: Without dead ends: 18529 [2023-12-15 18:53:22,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:22,605 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 907 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:22,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 612 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:53:22,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2023-12-15 18:53:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 18522. [2023-12-15 18:53:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18522 states, 18521 states have (on average 1.3250364451163543) internal successors, (24541), 18521 states have internal predecessors, (24541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18522 states to 18522 states and 24541 transitions. [2023-12-15 18:53:22,996 INFO L78 Accepts]: Start accepts. Automaton has 18522 states and 24541 transitions. Word has length 219 [2023-12-15 18:53:22,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:22,997 INFO L495 AbstractCegarLoop]: Abstraction has 18522 states and 24541 transitions. [2023-12-15 18:53:22,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 18522 states and 24541 transitions. [2023-12-15 18:53:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-15 18:53:23,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:23,001 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:53:23,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:53:23,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:23,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:23,002 INFO L85 PathProgramCache]: Analyzing trace with hash 673486266, now seen corresponding path program 1 times [2023-12-15 18:53:23,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:23,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273681782] [2023-12-15 18:53:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-15 18:53:23,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273681782] [2023-12-15 18:53:23,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273681782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:23,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:23,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971488947] [2023-12-15 18:53:23,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:23,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:23,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:23,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:23,192 INFO L87 Difference]: Start difference. First operand 18522 states and 24541 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:25,847 INFO L93 Difference]: Finished difference Result 51207 states and 68743 transitions. [2023-12-15 18:53:25,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:25,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 256 [2023-12-15 18:53:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:25,901 INFO L225 Difference]: With dead ends: 51207 [2023-12-15 18:53:25,901 INFO L226 Difference]: Without dead ends: 33473 [2023-12-15 18:53:25,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:25,925 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 860 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:25,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 984 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:53:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33473 states. [2023-12-15 18:53:26,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33473 to 31108. [2023-12-15 18:53:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31108 states, 31107 states have (on average 1.2544443372874272) internal successors, (39022), 31107 states have internal predecessors, (39022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31108 states to 31108 states and 39022 transitions. [2023-12-15 18:53:26,483 INFO L78 Accepts]: Start accepts. Automaton has 31108 states and 39022 transitions. Word has length 256 [2023-12-15 18:53:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:26,483 INFO L495 AbstractCegarLoop]: Abstraction has 31108 states and 39022 transitions. [2023-12-15 18:53:26,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 31108 states and 39022 transitions. [2023-12-15 18:53:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-15 18:53:26,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:26,486 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:26,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:53:26,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:26,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:26,487 INFO L85 PathProgramCache]: Analyzing trace with hash -314779711, now seen corresponding path program 1 times [2023-12-15 18:53:26,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:26,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191082270] [2023-12-15 18:53:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:26,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-15 18:53:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191082270] [2023-12-15 18:53:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191082270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:26,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:26,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:53:26,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035159944] [2023-12-15 18:53:26,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:26,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:26,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:26,627 INFO L87 Difference]: Start difference. First operand 31108 states and 39022 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:29,668 INFO L93 Difference]: Finished difference Result 87411 states and 110600 transitions. [2023-12-15 18:53:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:29,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 278 [2023-12-15 18:53:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:29,742 INFO L225 Difference]: With dead ends: 87411 [2023-12-15 18:53:29,742 INFO L226 Difference]: Without dead ends: 57091 [2023-12-15 18:53:29,776 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 [2023-12-15 18:53:29,778 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 888 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:29,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 905 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:53:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57091 states. [2023-12-15 18:53:30,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57091 to 57081. [2023-12-15 18:53:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57081 states, 57080 states have (on average 1.1981955150665733) internal successors, (68393), 57080 states have internal predecessors, (68393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57081 states to 57081 states and 68393 transitions. [2023-12-15 18:53:30,886 INFO L78 Accepts]: Start accepts. Automaton has 57081 states and 68393 transitions. Word has length 278 [2023-12-15 18:53:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:30,887 INFO L495 AbstractCegarLoop]: Abstraction has 57081 states and 68393 transitions. [2023-12-15 18:53:30,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 57081 states and 68393 transitions. [2023-12-15 18:53:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-15 18:53:30,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:30,891 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:30,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:53:30,891 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:30,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1011438725, now seen corresponding path program 1 times [2023-12-15 18:53:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:30,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846460514] [2023-12-15 18:53:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:30,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-15 18:53:31,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:31,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846460514] [2023-12-15 18:53:31,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846460514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:31,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:31,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:53:31,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644099035] [2023-12-15 18:53:31,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:31,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:53:31,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:31,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:53:31,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:53:31,423 INFO L87 Difference]: Start difference. First operand 57081 states and 68393 transitions. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:37,921 INFO L93 Difference]: Finished difference Result 154523 states and 187110 transitions. [2023-12-15 18:53:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:53:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 306 [2023-12-15 18:53:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:38,038 INFO L225 Difference]: With dead ends: 154523 [2023-12-15 18:53:38,038 INFO L226 Difference]: Without dead ends: 98230 [2023-12-15 18:53:38,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:53:38,064 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1734 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:38,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 740 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 6697 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-15 18:53:38,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98230 states. [2023-12-15 18:53:38,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98230 to 98100. [2023-12-15 18:53:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98100 states, 98099 states have (on average 1.1910620903373124) internal successors, (116842), 98099 states have internal predecessors, (116842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98100 states to 98100 states and 116842 transitions. [2023-12-15 18:53:39,195 INFO L78 Accepts]: Start accepts. Automaton has 98100 states and 116842 transitions. Word has length 306 [2023-12-15 18:53:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:39,195 INFO L495 AbstractCegarLoop]: Abstraction has 98100 states and 116842 transitions. [2023-12-15 18:53:39,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 98100 states and 116842 transitions. [2023-12-15 18:53:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-12-15 18:53:39,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:39,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:39,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:53:39,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:39,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1800520665, now seen corresponding path program 1 times [2023-12-15 18:53:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:39,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535267934] [2023-12-15 18:53:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:39,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-15 18:53:39,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:39,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535267934] [2023-12-15 18:53:39,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535267934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:39,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:39,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562400878] [2023-12-15 18:53:39,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:39,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:39,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:39,682 INFO L87 Difference]: Start difference. First operand 98100 states and 116842 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:42,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:42,877 INFO L93 Difference]: Finished difference Result 182031 states and 218401 transitions. [2023-12-15 18:53:42,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:42,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 321 [2023-12-15 18:53:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:42,987 INFO L225 Difference]: With dead ends: 182031 [2023-12-15 18:53:42,987 INFO L226 Difference]: Without dead ends: 98110 [2023-12-15 18:53:43,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:43,025 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:43,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1199 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:53:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98110 states. [2023-12-15 18:53:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98110 to 98100. [2023-12-15 18:53:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98100 states, 98099 states have (on average 1.1901956187117095) internal successors, (116757), 98099 states have internal predecessors, (116757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98100 states to 98100 states and 116757 transitions. [2023-12-15 18:53:44,513 INFO L78 Accepts]: Start accepts. Automaton has 98100 states and 116757 transitions. Word has length 321 [2023-12-15 18:53:44,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:44,513 INFO L495 AbstractCegarLoop]: Abstraction has 98100 states and 116757 transitions. [2023-12-15 18:53:44,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:44,513 INFO L276 IsEmpty]: Start isEmpty. Operand 98100 states and 116757 transitions. [2023-12-15 18:53:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-15 18:53:44,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:44,547 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:44,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:53:44,547 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:44,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:44,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1217763261, now seen corresponding path program 1 times [2023-12-15 18:53:44,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:44,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632264488] [2023-12-15 18:53:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:44,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 217 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-15 18:53:45,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:45,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632264488] [2023-12-15 18:53:45,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632264488] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:53:45,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646079156] [2023-12-15 18:53:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:45,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:53:45,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:53:45,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:53:45,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:53:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:45,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:53:45,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:53:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-15 18:53:45,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:53:45,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646079156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:45,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:53:45,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-15 18:53:45,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320974650] [2023-12-15 18:53:45,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:53:45,575 INFO L87 Difference]: Start difference. First operand 98100 states and 116757 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:48,272 INFO L93 Difference]: Finished difference Result 194623 states and 231568 transitions. [2023-12-15 18:53:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:48,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 350 [2023-12-15 18:53:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:48,614 INFO L225 Difference]: With dead ends: 194623 [2023-12-15 18:53:48,614 INFO L226 Difference]: Without dead ends: 97311 [2023-12-15 18:53:48,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:53:48,651 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 1138 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:48,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1445 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 18:53:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97311 states. [2023-12-15 18:53:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97311 to 97310. [2023-12-15 18:53:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97310 states, 97309 states have (on average 1.1398945626817663) internal successors, (110922), 97309 states have internal predecessors, (110922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97310 states to 97310 states and 110922 transitions. [2023-12-15 18:53:49,664 INFO L78 Accepts]: Start accepts. Automaton has 97310 states and 110922 transitions. Word has length 350 [2023-12-15 18:53:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:49,665 INFO L495 AbstractCegarLoop]: Abstraction has 97310 states and 110922 transitions. [2023-12-15 18:53:49,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 97310 states and 110922 transitions. [2023-12-15 18:53:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-15 18:53:49,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:49,670 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:49,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:53:49,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 18:53:49,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:49,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1352296652, now seen corresponding path program 1 times [2023-12-15 18:53:49,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:49,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843068960] [2023-12-15 18:53:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:49,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-12-15 18:53:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:50,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843068960] [2023-12-15 18:53:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843068960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:50,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:50,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:53:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258379144] [2023-12-15 18:53:50,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:50,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:50,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:50,313 INFO L87 Difference]: Start difference. First operand 97310 states and 110922 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:53,540 INFO L93 Difference]: Finished difference Result 226912 states and 257589 transitions. [2023-12-15 18:53:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2023-12-15 18:53:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:53,717 INFO L225 Difference]: With dead ends: 226912 [2023-12-15 18:53:53,717 INFO L226 Difference]: Without dead ends: 130390 [2023-12-15 18:53:53,796 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 [2023-12-15 18:53:53,796 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1069 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:53,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1347 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:53:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130390 states. [2023-12-15 18:53:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130390 to 123276. [2023-12-15 18:53:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123276 states, 123275 states have (on average 1.1204948286351653) internal successors, (138129), 123275 states have internal predecessors, (138129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123276 states to 123276 states and 138129 transitions. [2023-12-15 18:53:55,177 INFO L78 Accepts]: Start accepts. Automaton has 123276 states and 138129 transitions. Word has length 367 [2023-12-15 18:53:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:55,178 INFO L495 AbstractCegarLoop]: Abstraction has 123276 states and 138129 transitions. [2023-12-15 18:53:55,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 123276 states and 138129 transitions. [2023-12-15 18:53:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-15 18:53:55,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:55,372 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:55,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:53:55,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:55,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1822740125, now seen corresponding path program 1 times [2023-12-15 18:53:55,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432330254] [2023-12-15 18:53:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-15 18:53:55,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:55,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432330254] [2023-12-15 18:53:55,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432330254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:55,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:55,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:53:55,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115523299] [2023-12-15 18:53:55,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:55,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:55,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:55,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:55,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:55,694 INFO L87 Difference]: Start difference. First operand 123276 states and 138129 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:59,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:59,166 INFO L93 Difference]: Finished difference Result 274900 states and 310705 transitions. [2023-12-15 18:53:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 469 [2023-12-15 18:53:59,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:59,345 INFO L225 Difference]: With dead ends: 274900 [2023-12-15 18:53:59,345 INFO L226 Difference]: Without dead ends: 152412 Received shutdown request... [2023-12-15 18:53:59,406 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 [2023-12-15 18:53:59,408 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 [2023-12-15 18:53:59,409 INFO L413 NwaCegarLoop]: 1782 mSDtfsCounter, 739 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:59,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1935 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:53:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152412 states. [2023-12-15 18:53:59,526 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:53:59,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:53:59,527 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 18:53:59,534 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:59,537 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:53:59,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:53:59 BoogieIcfgContainer [2023-12-15 18:53:59,540 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:53:59,540 INFO L158 Benchmark]: Toolchain (without parser) took 61480.97ms. Allocated memory was 178.3MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 123.5MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 18:53:59,540 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:53:59,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1280.33ms. Allocated memory was 178.3MB in the beginning and 242.2MB in the end (delta: 64.0MB). Free memory was 123.5MB in the beginning and 131.0MB in the end (delta: -7.5MB). Peak memory consumption was 92.0MB. Max. memory is 8.0GB. [2023-12-15 18:53:59,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 430.97ms. Allocated memory is still 242.2MB. Free memory was 131.0MB in the beginning and 107.3MB in the end (delta: 23.7MB). Peak memory consumption was 110.2MB. Max. memory is 8.0GB. [2023-12-15 18:53:59,542 INFO L158 Benchmark]: Boogie Preprocessor took 681.90ms. Allocated memory was 242.2MB in the beginning and 428.9MB in the end (delta: 186.6MB). Free memory was 107.3MB in the beginning and 245.0MB in the end (delta: -137.7MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. [2023-12-15 18:53:59,542 INFO L158 Benchmark]: RCFGBuilder took 4012.07ms. Allocated memory was 428.9MB in the beginning and 721.4MB in the end (delta: 292.6MB). Free memory was 245.0MB in the beginning and 298.6MB in the end (delta: -53.7MB). Peak memory consumption was 239.4MB. Max. memory is 8.0GB. [2023-12-15 18:53:59,543 INFO L158 Benchmark]: TraceAbstraction took 55070.08ms. Allocated memory was 721.4MB in the beginning and 5.2GB in the end (delta: 4.5GB). Free memory was 298.1MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 18:53:59,544 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1280.33ms. Allocated memory was 178.3MB in the beginning and 242.2MB in the end (delta: 64.0MB). Free memory was 123.5MB in the beginning and 131.0MB in the end (delta: -7.5MB). Peak memory consumption was 92.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 430.97ms. Allocated memory is still 242.2MB. Free memory was 131.0MB in the beginning and 107.3MB in the end (delta: 23.7MB). Peak memory consumption was 110.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 681.90ms. Allocated memory was 242.2MB in the beginning and 428.9MB in the end (delta: 186.6MB). Free memory was 107.3MB in the beginning and 245.0MB in the end (delta: -137.7MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. * RCFGBuilder took 4012.07ms. Allocated memory was 428.9MB in the beginning and 721.4MB in the end (delta: 292.6MB). Free memory was 245.0MB in the beginning and 298.6MB in the end (delta: -53.7MB). Peak memory consumption was 239.4MB. Max. memory is 8.0GB. * TraceAbstraction took 55070.08ms. Allocated memory was 721.4MB in the beginning and 5.2GB in the end (delta: 4.5GB). Free memory was 298.1MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 1.6GB. 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: 139]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 139). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.0s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 42.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13382 SdHoareTripleChecker+Valid, 36.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13382 mSDsluCounter, 14040 SdHoareTripleChecker+Invalid, 30.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1740 mSDsCounter, 8331 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36423 IncrementalHoareTripleChecker+Invalid, 44754 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8331 mSolverCounterUnsat, 12300 mSDtfsCounter, 36423 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123276occurred in iteration=11, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 9776 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 3360 NumberOfCodeBlocks, 3360 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3347 ConstructedInterpolants, 0 QuantifiedInterpolants, 9384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 486 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 3447/3557 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 [2023-12-15 18:53:59,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0