/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:07:37,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:07:37,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:07:37,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:07:37,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:07:37,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:07:37,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:07:37,427 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:07:37,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:07:37,433 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:07:37,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:07:37,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:07:37,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:07:37,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:07:37,435 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:07:37,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:07:37,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:07:37,435 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:07:37,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:07:37,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:07:37,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:07:37,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:07:37,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:07:37,436 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:07:37,436 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:07:37,436 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:07:37,437 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:07:37,437 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:07:37,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:07:37,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:07:37,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:07:37,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:07:37,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:07:37,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:07:37,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:07:37,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:07:37,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:07:37,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:07:37,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:07:37,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:07:37,450 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:07:37,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:07:37,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:07:37,450 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:07:37,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:07:37,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:07:37,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:07:37,660 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:07:37,660 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:07:37,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2023-12-16 02:07:38,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:07:39,256 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:07:39,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2023-12-16 02:07:39,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f14c91ea/19498773e9bd42ec8b2a128490fb5dc2/FLAGf2f90cffc [2023-12-16 02:07:39,374 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f14c91ea/19498773e9bd42ec8b2a128490fb5dc2 [2023-12-16 02:07:39,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:07:39,376 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:07:39,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:07:39,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:07:39,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:07:39,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:39" (1/1) ... [2023-12-16 02:07:39,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2e9b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:39, skipping insertion in model container [2023-12-16 02:07:39,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:39" (1/1) ... [2023-12-16 02:07:39,497 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:07:39,727 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/Problem15_label45.c[3689,3702] [2023-12-16 02:07:40,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:07:40,293 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:07:40,326 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/Problem15_label45.c[3689,3702] [2023-12-16 02:07:40,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:07:40,791 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:07:40,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40 WrapperNode [2023-12-16 02:07:40,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:07:40,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:07:40,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:07:40,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:07:40,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:40,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,144 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2023-12-16 02:07:41,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:07:41,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:07:41,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:07:41,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:07:41,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,170 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,243 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:07:41,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:07:41,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:07:41,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:07:41,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:07:41,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (1/1) ... [2023-12-16 02:07:41,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:07:41,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:07:41,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:07:41,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:07:41,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:07:41,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:07:41,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:07:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:07:41,704 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:07:41,705 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:07:45,600 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:07:45,656 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:07:45,656 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:07:45,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:45 BoogieIcfgContainer [2023-12-16 02:07:45,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:07:45,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:07:45,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:07:45,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:07:45,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:07:39" (1/3) ... [2023-12-16 02:07:45,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224e6c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:45, skipping insertion in model container [2023-12-16 02:07:45,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:40" (2/3) ... [2023-12-16 02:07:45,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224e6c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:45, skipping insertion in model container [2023-12-16 02:07:45,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:45" (3/3) ... [2023-12-16 02:07:45,664 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label45.c [2023-12-16 02:07:45,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:07:45,675 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:07:45,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:07:45,729 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;@334ad051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:07:45,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:07:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 02:07:45,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:07:45,738 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] [2023-12-16 02:07:45,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:07:45,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:07:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1543567051, now seen corresponding path program 1 times [2023-12-16 02:07:45,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:07:45,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717304489] [2023-12-16 02:07:45,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:07:45,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:07:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:07:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:07:45,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:07:45,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717304489] [2023-12-16 02:07:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717304489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:07:45,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:07:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:07:45,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921384426] [2023-12-16 02:07:45,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:07:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:07:45,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:07:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:07:45,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:07:45,890 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:07:45,986 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-12-16 02:07:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:07:45,988 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-12-16 02:07:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:07:45,995 INFO L225 Difference]: With dead ends: 723 [2023-12-16 02:07:45,996 INFO L226 Difference]: Without dead ends: 360 [2023-12-16 02:07:45,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:07:46,000 INFO L413 NwaCegarLoop]: 623 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, 623 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 [2023-12-16 02:07:46,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:07:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-16 02:07:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-12-16 02:07:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-12-16 02:07:46,035 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 28 [2023-12-16 02:07:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:07:46,035 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-12-16 02:07:46,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-12-16 02:07:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 02:07:46,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:07:46,036 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] [2023-12-16 02:07:46,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:07:46,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:07:46,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:07:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1755916508, now seen corresponding path program 1 times [2023-12-16 02:07:46,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:07:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164694644] [2023-12-16 02:07:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:07:46,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:07:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:07:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:07:46,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:07:46,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164694644] [2023-12-16 02:07:46,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164694644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:07:46,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:07:46,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:07:46,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942615013] [2023-12-16 02:07:46,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:07:46,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:07:46,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:07:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:07:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:07:46,168 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:48,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:07:48,127 INFO L93 Difference]: Finished difference Result 1025 states and 1788 transitions. [2023-12-16 02:07:48,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:07:48,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-12-16 02:07:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:07:48,131 INFO L225 Difference]: With dead ends: 1025 [2023-12-16 02:07:48,131 INFO L226 Difference]: Without dead ends: 666 [2023-12-16 02:07:48,132 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 [2023-12-16 02:07:48,133 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 299 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:07:48,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 316 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 02:07:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-16 02:07:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2023-12-16 02:07:48,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.4796380090497738) internal successors, (981), 663 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 981 transitions. [2023-12-16 02:07:48,179 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 981 transitions. Word has length 28 [2023-12-16 02:07:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:07:48,179 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 981 transitions. [2023-12-16 02:07:48,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 981 transitions. [2023-12-16 02:07:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-16 02:07:48,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:07:48,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:07:48,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:07:48,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:07:48,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:07:48,190 INFO L85 PathProgramCache]: Analyzing trace with hash -214736780, now seen corresponding path program 1 times [2023-12-16 02:07:48,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:07:48,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472804152] [2023-12-16 02:07:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:07:48,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:07:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:07:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:07:48,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:07:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472804152] [2023-12-16 02:07:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472804152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:07:48,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:07:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:07:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650252230] [2023-12-16 02:07:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:07:48,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:07:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:07:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:07:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:07:48,506 INFO L87 Difference]: Start difference. First operand 664 states and 981 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:51,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:07:51,016 INFO L93 Difference]: Finished difference Result 1952 states and 2892 transitions. [2023-12-16 02:07:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:07:51,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-16 02:07:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:07:51,021 INFO L225 Difference]: With dead ends: 1952 [2023-12-16 02:07:51,021 INFO L226 Difference]: Without dead ends: 1289 [2023-12-16 02:07:51,022 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 [2023-12-16 02:07:51,023 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 256 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:07:51,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 324 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 02:07:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-12-16 02:07:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1281. [2023-12-16 02:07:51,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.3984375) internal successors, (1790), 1280 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1790 transitions. [2023-12-16 02:07:51,064 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1790 transitions. Word has length 103 [2023-12-16 02:07:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:07:51,064 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1790 transitions. [2023-12-16 02:07:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1790 transitions. [2023-12-16 02:07:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 02:07:51,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:07:51,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:07:51,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:07:51,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:07:51,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:07:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1080869250, now seen corresponding path program 1 times [2023-12-16 02:07:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:07:51,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364226855] [2023-12-16 02:07:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:07:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:07:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:07:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:07:51,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:07:51,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364226855] [2023-12-16 02:07:51,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364226855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:07:51,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:07:51,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:07:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802173257] [2023-12-16 02:07:51,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:07:51,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:07:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:07:51,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:07:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:07:51,361 INFO L87 Difference]: Start difference. First operand 1281 states and 1790 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:07:53,664 INFO L93 Difference]: Finished difference Result 3763 states and 5259 transitions. [2023-12-16 02:07:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:07:53,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-16 02:07:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:07:53,671 INFO L225 Difference]: With dead ends: 3763 [2023-12-16 02:07:53,672 INFO L226 Difference]: Without dead ends: 2483 [2023-12-16 02:07:53,673 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 [2023-12-16 02:07:53,674 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 236 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:07:53,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 364 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 02:07:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2023-12-16 02:07:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2181. [2023-12-16 02:07:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.2811926605504587) internal successors, (2793), 2180 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2793 transitions. [2023-12-16 02:07:53,703 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2793 transitions. Word has length 107 [2023-12-16 02:07:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:07:53,713 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 2793 transitions. [2023-12-16 02:07:53,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2793 transitions. [2023-12-16 02:07:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-16 02:07:53,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:07:53,723 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, 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] [2023-12-16 02:07:53,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:07:53,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:07:53,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:07:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash -280494849, now seen corresponding path program 1 times [2023-12-16 02:07:53,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:07:53,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443547959] [2023-12-16 02:07:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:07:53,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:07:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:07:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 02:07:53,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:07:53,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443547959] [2023-12-16 02:07:53,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443547959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:07:53,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:07:53,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:07:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505392891] [2023-12-16 02:07:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:07:53,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:07:53,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:07:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:07:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:07:53,986 INFO L87 Difference]: Start difference. First operand 2181 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:07:55,773 INFO L93 Difference]: Finished difference Result 6165 states and 7957 transitions. [2023-12-16 02:07:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:07:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 198 [2023-12-16 02:07:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:07:55,783 INFO L225 Difference]: With dead ends: 6165 [2023-12-16 02:07:55,783 INFO L226 Difference]: Without dead ends: 3985 [2023-12-16 02:07:55,803 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 [2023-12-16 02:07:55,828 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:07:55,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 337 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 02:07:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2023-12-16 02:07:55,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3681. [2023-12-16 02:07:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 1.2195652173913043) internal successors, (4488), 3680 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4488 transitions. [2023-12-16 02:07:55,926 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4488 transitions. Word has length 198 [2023-12-16 02:07:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:07:55,927 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 4488 transitions. [2023-12-16 02:07:55,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4488 transitions. [2023-12-16 02:07:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-16 02:07:55,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:07:55,930 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:07:55,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:07:55,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:07:55,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:07:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1076254231, now seen corresponding path program 1 times [2023-12-16 02:07:55,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:07:55,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070787657] [2023-12-16 02:07:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:07:55,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:07:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:07:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 02:07:56,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:07:56,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070787657] [2023-12-16 02:07:56,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070787657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:07:56,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:07:56,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:07:56,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490787184] [2023-12-16 02:07:56,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:07:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:07:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:07:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:07:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:07:56,871 INFO L87 Difference]: Start difference. First operand 3681 states and 4488 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:07:58,956 INFO L93 Difference]: Finished difference Result 7660 states and 9286 transitions. [2023-12-16 02:07:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:07:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 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 300 [2023-12-16 02:07:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:07:58,967 INFO L225 Difference]: With dead ends: 7660 [2023-12-16 02:07:58,967 INFO L226 Difference]: Without dead ends: 3980 [2023-12-16 02:07:58,971 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 [2023-12-16 02:07:58,974 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:07:58,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:07:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-12-16 02:07:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3980. [2023-12-16 02:07:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3979 states have (on average 1.204574013571249) internal successors, (4793), 3979 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 4793 transitions. [2023-12-16 02:07:59,029 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 4793 transitions. Word has length 300 [2023-12-16 02:07:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:07:59,029 INFO L495 AbstractCegarLoop]: Abstraction has 3980 states and 4793 transitions. [2023-12-16 02:07:59,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:07:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 4793 transitions. [2023-12-16 02:07:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-16 02:07:59,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:07:59,032 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:07:59,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:07:59,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:07:59,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:07:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1358956174, now seen corresponding path program 1 times [2023-12-16 02:07:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:07:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270989886] [2023-12-16 02:07:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:07:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:07:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:07:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-16 02:07:59,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:07:59,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270989886] [2023-12-16 02:07:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270989886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:07:59,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:07:59,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:07:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586734414] [2023-12-16 02:07:59,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:07:59,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:07:59,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:07:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:07:59,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:07:59,295 INFO L87 Difference]: Start difference. First operand 3980 states and 4793 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:00,702 INFO L93 Difference]: Finished difference Result 9464 states and 11667 transitions. [2023-12-16 02:08:00,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:00,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 315 [2023-12-16 02:08:00,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:00,717 INFO L225 Difference]: With dead ends: 9464 [2023-12-16 02:08:00,717 INFO L226 Difference]: Without dead ends: 5784 [2023-12-16 02:08:00,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:00,721 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 287 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:00,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 668 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 02:08:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2023-12-16 02:08:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5782. [2023-12-16 02:08:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5781 states have (on average 1.1672720982528975) internal successors, (6748), 5781 states have internal predecessors, (6748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 6748 transitions. [2023-12-16 02:08:00,790 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 6748 transitions. Word has length 315 [2023-12-16 02:08:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:00,791 INFO L495 AbstractCegarLoop]: Abstraction has 5782 states and 6748 transitions. [2023-12-16 02:08:00,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 6748 transitions. [2023-12-16 02:08:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-16 02:08:00,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:00,796 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:00,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:08:00,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:00,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1656963707, now seen corresponding path program 1 times [2023-12-16 02:08:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:00,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749294650] [2023-12-16 02:08:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-16 02:08:01,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:01,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749294650] [2023-12-16 02:08:01,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749294650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:01,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:01,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:01,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98014768] [2023-12-16 02:08:01,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:01,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:01,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:01,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:01,037 INFO L87 Difference]: Start difference. First operand 5782 states and 6748 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:02,566 INFO L93 Difference]: Finished difference Result 13363 states and 15903 transitions. [2023-12-16 02:08:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:02,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 374 [2023-12-16 02:08:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:02,625 INFO L225 Difference]: With dead ends: 13363 [2023-12-16 02:08:02,626 INFO L226 Difference]: Without dead ends: 7881 [2023-12-16 02:08:02,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:02,633 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 298 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:02,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 632 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:08:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2023-12-16 02:08:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7283. [2023-12-16 02:08:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7283 states, 7282 states have (on average 1.1484482285086515) internal successors, (8363), 7282 states have internal predecessors, (8363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7283 states to 7283 states and 8363 transitions. [2023-12-16 02:08:02,834 INFO L78 Accepts]: Start accepts. Automaton has 7283 states and 8363 transitions. Word has length 374 [2023-12-16 02:08:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:02,834 INFO L495 AbstractCegarLoop]: Abstraction has 7283 states and 8363 transitions. [2023-12-16 02:08:02,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7283 states and 8363 transitions. [2023-12-16 02:08:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-16 02:08:02,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:02,838 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:02,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 02:08:02,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:02,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash -826287832, now seen corresponding path program 1 times [2023-12-16 02:08:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:02,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38718080] [2023-12-16 02:08:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:02,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:08:03,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38718080] [2023-12-16 02:08:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38718080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:03,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:03,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136342713] [2023-12-16 02:08:03,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:03,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:03,323 INFO L87 Difference]: Start difference. First operand 7283 states and 8363 transitions. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:04,836 INFO L93 Difference]: Finished difference Result 16068 states and 18807 transitions. [2023-12-16 02:08:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 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 391 [2023-12-16 02:08:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:04,864 INFO L225 Difference]: With dead ends: 16068 [2023-12-16 02:08:04,865 INFO L226 Difference]: Without dead ends: 9085 [2023-12-16 02:08:04,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:04,871 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 248 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:04,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 618 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:08:04,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-12-16 02:08:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 8779. [2023-12-16 02:08:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8779 states, 8778 states have (on average 1.1346548188653451) internal successors, (9960), 8778 states have internal predecessors, (9960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8779 states to 8779 states and 9960 transitions. [2023-12-16 02:08:05,062 INFO L78 Accepts]: Start accepts. Automaton has 8779 states and 9960 transitions. Word has length 391 [2023-12-16 02:08:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:05,063 INFO L495 AbstractCegarLoop]: Abstraction has 8779 states and 9960 transitions. [2023-12-16 02:08:05,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 8779 states and 9960 transitions. [2023-12-16 02:08:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-16 02:08:05,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:05,068 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:05,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:08:05,068 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:05,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1170277730, now seen corresponding path program 1 times [2023-12-16 02:08:05,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:05,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119795066] [2023-12-16 02:08:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:05,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-16 02:08:05,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119795066] [2023-12-16 02:08:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119795066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:05,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404751853] [2023-12-16 02:08:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:05,472 INFO L87 Difference]: Start difference. First operand 8779 states and 9960 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:07,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:07,869 INFO L93 Difference]: Finished difference Result 20547 states and 23477 transitions. [2023-12-16 02:08:07,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:07,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 401 [2023-12-16 02:08:07,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:07,906 INFO L225 Difference]: With dead ends: 20547 [2023-12-16 02:08:07,906 INFO L226 Difference]: Without dead ends: 12068 [2023-12-16 02:08:07,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:07,928 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 284 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:07,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 313 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 02:08:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12068 states. [2023-12-16 02:08:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12068 to 7876. [2023-12-16 02:08:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7875 states have (on average 1.1445079365079365) internal successors, (9013), 7875 states have internal predecessors, (9013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 9013 transitions. [2023-12-16 02:08:08,086 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 9013 transitions. Word has length 401 [2023-12-16 02:08:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:08,086 INFO L495 AbstractCegarLoop]: Abstraction has 7876 states and 9013 transitions. [2023-12-16 02:08:08,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 9013 transitions. [2023-12-16 02:08:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-16 02:08:08,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:08,094 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:08,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 02:08:08,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:08,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1128510464, now seen corresponding path program 1 times [2023-12-16 02:08:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:08,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890712151] [2023-12-16 02:08:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:08,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-16 02:08:08,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:08,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890712151] [2023-12-16 02:08:08,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890712151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:08,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941689776] [2023-12-16 02:08:08,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:08,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:08,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:08,266 INFO L87 Difference]: Start difference. First operand 7876 states and 9013 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:09,712 INFO L93 Difference]: Finished difference Result 17843 states and 20677 transitions. [2023-12-16 02:08:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 492 [2023-12-16 02:08:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:09,728 INFO L225 Difference]: With dead ends: 17843 [2023-12-16 02:08:09,728 INFO L226 Difference]: Without dead ends: 10267 [2023-12-16 02:08:09,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:09,734 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 386 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:09,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 444 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:08:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10267 states. [2023-12-16 02:08:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10267 to 10267. [2023-12-16 02:08:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10267 states, 10266 states have (on average 1.1468926553672316) internal successors, (11774), 10266 states have internal predecessors, (11774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10267 states to 10267 states and 11774 transitions. [2023-12-16 02:08:09,819 INFO L78 Accepts]: Start accepts. Automaton has 10267 states and 11774 transitions. Word has length 492 [2023-12-16 02:08:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:09,819 INFO L495 AbstractCegarLoop]: Abstraction has 10267 states and 11774 transitions. [2023-12-16 02:08:09,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 10267 states and 11774 transitions. [2023-12-16 02:08:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-16 02:08:09,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:09,823 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:09,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 02:08:09,823 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:09,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 733302055, now seen corresponding path program 1 times [2023-12-16 02:08:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:09,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621180887] [2023-12-16 02:08:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-16 02:08:10,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:10,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621180887] [2023-12-16 02:08:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621180887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:10,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:10,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685370664] [2023-12-16 02:08:10,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:10,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:10,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:10,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:10,298 INFO L87 Difference]: Start difference. First operand 10267 states and 11774 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:12,094 INFO L93 Difference]: Finished difference Result 25032 states and 28937 transitions. [2023-12-16 02:08:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:12,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 516 [2023-12-16 02:08:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:12,121 INFO L225 Difference]: With dead ends: 25032 [2023-12-16 02:08:12,121 INFO L226 Difference]: Without dead ends: 15065 [2023-12-16 02:08:12,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:12,131 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 246 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:12,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 618 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 02:08:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15065 states. [2023-12-16 02:08:12,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15065 to 14456. [2023-12-16 02:08:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14456 states, 14455 states have (on average 1.1328951919750951) internal successors, (16376), 14455 states have internal predecessors, (16376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14456 states to 14456 states and 16376 transitions. [2023-12-16 02:08:12,325 INFO L78 Accepts]: Start accepts. Automaton has 14456 states and 16376 transitions. Word has length 516 [2023-12-16 02:08:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:12,326 INFO L495 AbstractCegarLoop]: Abstraction has 14456 states and 16376 transitions. [2023-12-16 02:08:12,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 14456 states and 16376 transitions. [2023-12-16 02:08:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-16 02:08:12,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:12,332 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, 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, 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, 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] [2023-12-16 02:08:12,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 02:08:12,332 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:12,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:12,333 INFO L85 PathProgramCache]: Analyzing trace with hash 516999935, now seen corresponding path program 1 times [2023-12-16 02:08:12,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:12,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605919430] [2023-12-16 02:08:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:12,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 550 proven. 39 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-12-16 02:08:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605919430] [2023-12-16 02:08:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605919430] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:08:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094276946] [2023-12-16 02:08:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:12,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:08:12,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:08:12,908 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) [2023-12-16 02:08:12,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:08:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:13,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:08:13,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:08:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-12-16 02:08:14,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:08:14,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094276946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:14,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:08:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-16 02:08:14,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879747238] [2023-12-16 02:08:14,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:14,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:08:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:14,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:08:14,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:08:14,307 INFO L87 Difference]: Start difference. First operand 14456 states and 16376 transitions. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:16,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:16,311 INFO L93 Difference]: Finished difference Result 30109 states and 34083 transitions. [2023-12-16 02:08:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:08:16,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 583 [2023-12-16 02:08:16,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:16,328 INFO L225 Difference]: With dead ends: 30109 [2023-12-16 02:08:16,328 INFO L226 Difference]: Without dead ends: 15654 [2023-12-16 02:08:16,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:08:16,357 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 316 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:16,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 388 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 02:08:16,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15654 states. [2023-12-16 02:08:16,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15654 to 15354. [2023-12-16 02:08:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15354 states, 15353 states have (on average 1.1271412753207841) internal successors, (17305), 15353 states have internal predecessors, (17305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15354 states to 15354 states and 17305 transitions. [2023-12-16 02:08:16,632 INFO L78 Accepts]: Start accepts. Automaton has 15354 states and 17305 transitions. Word has length 583 [2023-12-16 02:08:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:16,633 INFO L495 AbstractCegarLoop]: Abstraction has 15354 states and 17305 transitions. [2023-12-16 02:08:16,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 15354 states and 17305 transitions. [2023-12-16 02:08:16,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-12-16 02:08:16,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:16,641 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:16,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 02:08:16,846 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,SelfDestructingSolverStorable12 [2023-12-16 02:08:16,847 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:16,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:16,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1270242602, now seen corresponding path program 1 times [2023-12-16 02:08:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:16,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773541571] [2023-12-16 02:08:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:16,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-12-16 02:08:17,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:17,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773541571] [2023-12-16 02:08:17,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773541571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:17,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:17,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558678028] [2023-12-16 02:08:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:17,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:17,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:17,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:17,173 INFO L87 Difference]: Start difference. First operand 15354 states and 17305 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:18,619 INFO L93 Difference]: Finished difference Result 30705 states and 34607 transitions. [2023-12-16 02:08:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 608 [2023-12-16 02:08:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:18,798 INFO L225 Difference]: With dead ends: 30705 [2023-12-16 02:08:18,798 INFO L226 Difference]: Without dead ends: 15352 [2023-12-16 02:08:18,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:18,821 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 464 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:18,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 69 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:08:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15352 states. [2023-12-16 02:08:19,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15352 to 15352. [2023-12-16 02:08:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15352 states, 15351 states have (on average 1.1270275552081297) internal successors, (17301), 15351 states have internal predecessors, (17301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15352 states to 15352 states and 17301 transitions. [2023-12-16 02:08:19,109 INFO L78 Accepts]: Start accepts. Automaton has 15352 states and 17301 transitions. Word has length 608 [2023-12-16 02:08:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:19,110 INFO L495 AbstractCegarLoop]: Abstraction has 15352 states and 17301 transitions. [2023-12-16 02:08:19,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 15352 states and 17301 transitions. [2023-12-16 02:08:19,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-16 02:08:19,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:19,117 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:19,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 02:08:19,118 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:19,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:19,118 INFO L85 PathProgramCache]: Analyzing trace with hash -301430159, now seen corresponding path program 1 times [2023-12-16 02:08:19,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:19,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750337147] [2023-12-16 02:08:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:19,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-12-16 02:08:19,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:19,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750337147] [2023-12-16 02:08:19,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750337147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:19,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:19,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:19,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692171942] [2023-12-16 02:08:19,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:19,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:19,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:19,538 INFO L87 Difference]: Start difference. First operand 15352 states and 17301 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:21,043 INFO L93 Difference]: Finished difference Result 39372 states and 44286 transitions. [2023-12-16 02:08:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 629 [2023-12-16 02:08:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:21,088 INFO L225 Difference]: With dead ends: 39372 [2023-12-16 02:08:21,088 INFO L226 Difference]: Without dead ends: 19835 [2023-12-16 02:08:21,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:21,109 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 287 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:21,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 642 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:08:21,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19835 states. [2023-12-16 02:08:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19835 to 18041. [2023-12-16 02:08:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18041 states, 18040 states have (on average 1.080709534368071) internal successors, (19496), 18040 states have internal predecessors, (19496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18041 states to 18041 states and 19496 transitions. [2023-12-16 02:08:21,339 INFO L78 Accepts]: Start accepts. Automaton has 18041 states and 19496 transitions. Word has length 629 [2023-12-16 02:08:21,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:21,339 INFO L495 AbstractCegarLoop]: Abstraction has 18041 states and 19496 transitions. [2023-12-16 02:08:21,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 18041 states and 19496 transitions. [2023-12-16 02:08:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2023-12-16 02:08:21,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:21,348 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, 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, 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, 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, 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, 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] [2023-12-16 02:08:21,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:08:21,348 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:21,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash -183500037, now seen corresponding path program 1 times [2023-12-16 02:08:21,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:21,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814380226] [2023-12-16 02:08:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 02:08:22,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:22,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814380226] [2023-12-16 02:08:22,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814380226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:22,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:22,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:22,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966439415] [2023-12-16 02:08:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:22,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:22,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:22,489 INFO L87 Difference]: Start difference. First operand 18041 states and 19496 transitions. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:23,783 INFO L93 Difference]: Finished difference Result 41763 states and 45145 transitions. [2023-12-16 02:08:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 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 653 [2023-12-16 02:08:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:23,802 INFO L225 Difference]: With dead ends: 41763 [2023-12-16 02:08:23,802 INFO L226 Difference]: Without dead ends: 21032 [2023-12-16 02:08:23,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:23,820 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 85 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:23,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 565 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 02:08:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21032 states. [2023-12-16 02:08:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21032 to 21031. [2023-12-16 02:08:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21031 states, 21030 states have (on average 1.0720399429386591) internal successors, (22545), 21030 states have internal predecessors, (22545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21031 states to 21031 states and 22545 transitions. [2023-12-16 02:08:24,061 INFO L78 Accepts]: Start accepts. Automaton has 21031 states and 22545 transitions. Word has length 653 [2023-12-16 02:08:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:24,061 INFO L495 AbstractCegarLoop]: Abstraction has 21031 states and 22545 transitions. [2023-12-16 02:08:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 21031 states and 22545 transitions. [2023-12-16 02:08:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-12-16 02:08:24,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:24,070 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:24,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 02:08:24,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:24,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:24,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2103937346, now seen corresponding path program 1 times [2023-12-16 02:08:24,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:24,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610265440] [2023-12-16 02:08:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:24,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 524 proven. 190 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 02:08:24,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:24,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610265440] [2023-12-16 02:08:24,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610265440] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:08:24,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570648703] [2023-12-16 02:08:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:24,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:08:24,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:08:24,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:08:24,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:08:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:24,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:08:24,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:08:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-16 02:08:25,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:08:25,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570648703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:25,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:08:25,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-16 02:08:25,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699478905] [2023-12-16 02:08:25,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:25,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:08:25,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:08:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:08:25,092 INFO L87 Difference]: Start difference. First operand 21031 states and 22545 transitions. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:26,681 INFO L93 Difference]: Finished difference Result 49844 states and 53521 transitions. [2023-12-16 02:08:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:26,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 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 660 [2023-12-16 02:08:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:26,711 INFO L225 Difference]: With dead ends: 49844 [2023-12-16 02:08:26,712 INFO L226 Difference]: Without dead ends: 28814 [2023-12-16 02:08:26,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:08:26,729 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 214 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:26,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 192 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:08:26,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28814 states. [2023-12-16 02:08:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28814 to 25818. [2023-12-16 02:08:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25818 states, 25817 states have (on average 1.0716969438741915) internal successors, (27668), 25817 states have internal predecessors, (27668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25818 states to 25818 states and 27668 transitions. [2023-12-16 02:08:26,972 INFO L78 Accepts]: Start accepts. Automaton has 25818 states and 27668 transitions. Word has length 660 [2023-12-16 02:08:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:26,972 INFO L495 AbstractCegarLoop]: Abstraction has 25818 states and 27668 transitions. [2023-12-16 02:08:26,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 25818 states and 27668 transitions. [2023-12-16 02:08:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2023-12-16 02:08:26,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:26,981 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:26,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 02:08:27,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 02:08:27,184 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:27,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:27,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1458497042, now seen corresponding path program 1 times [2023-12-16 02:08:27,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:27,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545507668] [2023-12-16 02:08:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:27,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-16 02:08:27,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545507668] [2023-12-16 02:08:27,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545507668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:27,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:08:27,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:08:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673436136] [2023-12-16 02:08:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:08:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:08:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:27,636 INFO L87 Difference]: Start difference. First operand 25818 states and 27668 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:28,847 INFO L93 Difference]: Finished difference Result 55837 states and 59744 transitions. [2023-12-16 02:08:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:08:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 737 [2023-12-16 02:08:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:28,876 INFO L225 Difference]: With dead ends: 55837 [2023-12-16 02:08:28,876 INFO L226 Difference]: Without dead ends: 30020 [2023-12-16 02:08:28,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:08:28,894 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 352 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:28,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 123 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 02:08:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30020 states. [2023-12-16 02:08:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30020 to 27012. [2023-12-16 02:08:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27012 states, 27011 states have (on average 1.0686016807967125) internal successors, (28864), 27011 states have internal predecessors, (28864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:29,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27012 states to 27012 states and 28864 transitions. [2023-12-16 02:08:29,313 INFO L78 Accepts]: Start accepts. Automaton has 27012 states and 28864 transitions. Word has length 737 [2023-12-16 02:08:29,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:29,314 INFO L495 AbstractCegarLoop]: Abstraction has 27012 states and 28864 transitions. [2023-12-16 02:08:29,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 27012 states and 28864 transitions. [2023-12-16 02:08:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-16 02:08:29,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:29,328 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, 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, 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, 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, 3, 3, 3, 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] [2023-12-16 02:08:29,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 02:08:29,328 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:29,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1581925380, now seen corresponding path program 1 times [2023-12-16 02:08:29,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:29,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344102637] [2023-12-16 02:08:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:29,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 577 proven. 188 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-12-16 02:08:30,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:30,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344102637] [2023-12-16 02:08:30,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344102637] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:08:30,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311737813] [2023-12-16 02:08:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:30,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:08:30,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:08:30,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:08:30,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:08:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:31,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:08:31,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:08:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-12-16 02:08:31,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:08:31,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311737813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:08:31,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:08:31,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-16 02:08:31,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648990700] [2023-12-16 02:08:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:08:31,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:08:31,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:31,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:08:31,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:08:31,292 INFO L87 Difference]: Start difference. First operand 27012 states and 28864 transitions. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:33,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:33,493 INFO L93 Difference]: Finished difference Result 62413 states and 66442 transitions. [2023-12-16 02:08:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:08:33,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 750 [2023-12-16 02:08:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:33,525 INFO L225 Difference]: With dead ends: 62413 [2023-12-16 02:08:33,525 INFO L226 Difference]: Without dead ends: 35402 [2023-12-16 02:08:33,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:08:33,530 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 523 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:33,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 149 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:08:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35402 states. [2023-12-16 02:08:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35402 to 31506. [2023-12-16 02:08:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31506 states, 31505 states have (on average 1.0648468497063959) internal successors, (33548), 31505 states have internal predecessors, (33548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31506 states to 31506 states and 33548 transitions. [2023-12-16 02:08:33,817 INFO L78 Accepts]: Start accepts. Automaton has 31506 states and 33548 transitions. Word has length 750 [2023-12-16 02:08:33,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:33,817 INFO L495 AbstractCegarLoop]: Abstraction has 31506 states and 33548 transitions. [2023-12-16 02:08:33,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 31506 states and 33548 transitions. [2023-12-16 02:08:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2023-12-16 02:08:33,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:33,835 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, 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, 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, 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, 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, 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] [2023-12-16 02:08:33,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:08:34,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:08:34,042 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:34,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1885111460, now seen corresponding path program 1 times [2023-12-16 02:08:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:34,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996038795] [2023-12-16 02:08:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:34,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:08:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 517 proven. 269 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-16 02:08:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:08:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996038795] [2023-12-16 02:08:35,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996038795] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:08:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017163762] [2023-12-16 02:08:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:35,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:08:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:08:35,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:08:35,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:08:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:08:36,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 02:08:36,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:08:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 517 proven. 269 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-16 02:08:41,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:08:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 517 proven. 269 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-16 02:08:45,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017163762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:08:45,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 02:08:45,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-12-16 02:08:45,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263762783] [2023-12-16 02:08:45,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 02:08:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 02:08:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:08:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 02:08:45,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:08:45,245 INFO L87 Difference]: Start difference. First operand 31506 states and 33548 transitions. Second operand has 9 states, 9 states have (on average 189.88888888888889) internal successors, (1709), 8 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:08:51,754 INFO L93 Difference]: Finished difference Result 80833 states and 85674 transitions. [2023-12-16 02:08:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 02:08:51,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 189.88888888888889) internal successors, (1709), 8 states have internal predecessors, (1709), 0 states have call successors, (0), 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 806 [2023-12-16 02:08:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:08:51,803 INFO L225 Difference]: With dead ends: 80833 [2023-12-16 02:08:51,803 INFO L226 Difference]: Without dead ends: 49328 [2023-12-16 02:08:51,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1626 GetRequests, 1607 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-12-16 02:08:51,827 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 752 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 6469 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 7392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 6469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:08:51,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 214 Invalid, 7392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 6469 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-16 02:08:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49328 states. [2023-12-16 02:08:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49328 to 36298. [2023-12-16 02:08:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36298 states, 36297 states have (on average 1.0643028349450367) internal successors, (38631), 36297 states have internal predecessors, (38631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36298 states to 36298 states and 38631 transitions. [2023-12-16 02:08:52,197 INFO L78 Accepts]: Start accepts. Automaton has 36298 states and 38631 transitions. Word has length 806 [2023-12-16 02:08:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:08:52,197 INFO L495 AbstractCegarLoop]: Abstraction has 36298 states and 38631 transitions. [2023-12-16 02:08:52,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.88888888888889) internal successors, (1709), 8 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:08:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 36298 states and 38631 transitions. [2023-12-16 02:08:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2023-12-16 02:08:52,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:08:52,217 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, 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, 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, 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, 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, 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] [2023-12-16 02:08:52,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:08:52,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:08:52,424 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:08:52,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:08:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1328049758, now seen corresponding path program 1 times [2023-12-16 02:08:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:08:52,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376808642] [2023-12-16 02:08:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:08:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2023-12-16 02:08:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-16 02:08:52,508 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:08:52,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 02:08:52,508 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 819 with TraceHistMax 5,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [1376808642] and IpTcStrategyModuleZ3 [2145305037]. [2023-12-16 02:08:52,511 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:08:52,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:08:52,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:08:52 BoogieIcfgContainer [2023-12-16 02:08:52,515 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:08:52,518 INFO L158 Benchmark]: Toolchain (without parser) took 73139.21ms. Allocated memory was 229.6MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 170.7MB in the beginning and 489.1MB in the end (delta: -318.4MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-16 02:08:52,518 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:08:52,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1417.82ms. Allocated memory is still 229.6MB. Free memory was 170.7MB in the beginning and 140.8MB in the end (delta: 30.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-16 02:08:52,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 332.44ms. Allocated memory is still 229.6MB. Free memory was 140.8MB in the beginning and 164.7MB in the end (delta: -24.0MB). Peak memory consumption was 37.4MB. Max. memory is 8.0GB. [2023-12-16 02:08:52,519 INFO L158 Benchmark]: Boogie Preprocessor took 344.91ms. Allocated memory is still 229.6MB. Free memory was 164.7MB in the beginning and 156.5MB in the end (delta: 8.2MB). Peak memory consumption was 63.7MB. Max. memory is 8.0GB. [2023-12-16 02:08:52,521 INFO L158 Benchmark]: RCFGBuilder took 4165.81ms. Allocated memory was 229.6MB in the beginning and 453.0MB in the end (delta: 223.3MB). Free memory was 156.5MB in the beginning and 238.9MB in the end (delta: -82.3MB). Peak memory consumption was 141.6MB. Max. memory is 8.0GB. [2023-12-16 02:08:52,521 INFO L158 Benchmark]: TraceAbstraction took 66856.68ms. Allocated memory was 453.0MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 238.3MB in the beginning and 489.1MB in the end (delta: -250.8MB). Peak memory consumption was 985.5MB. Max. memory is 8.0GB. [2023-12-16 02:08:52,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1417.82ms. Allocated memory is still 229.6MB. Free memory was 170.7MB in the beginning and 140.8MB in the end (delta: 30.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 332.44ms. Allocated memory is still 229.6MB. Free memory was 140.8MB in the beginning and 164.7MB in the end (delta: -24.0MB). Peak memory consumption was 37.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 344.91ms. Allocated memory is still 229.6MB. Free memory was 164.7MB in the beginning and 156.5MB in the end (delta: 8.2MB). Peak memory consumption was 63.7MB. Max. memory is 8.0GB. * RCFGBuilder took 4165.81ms. Allocated memory was 229.6MB in the beginning and 453.0MB in the end (delta: 223.3MB). Free memory was 156.5MB in the beginning and 238.9MB in the end (delta: -82.3MB). Peak memory consumption was 141.6MB. Max. memory is 8.0GB. * TraceAbstraction took 66856.68ms. Allocated memory was 453.0MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 238.3MB in the beginning and 489.1MB in the end (delta: -250.8MB). Peak memory consumption was 985.5MB. 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: 104]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 104). Cancelled while NwaCegarLoop was analyzing trace of length 819 with TraceHistMax 5,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [1376808642] and IpTcStrategyModuleZ3 [2145305037]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 362 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.8s, OverallIterations: 21, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 39.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5895 SdHoareTripleChecker+Valid, 36.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5895 mSDsluCounter, 7956 SdHoareTripleChecker+Invalid, 30.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 869 mSDsCounter, 4501 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24755 IncrementalHoareTripleChecker+Invalid, 29256 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4501 mSolverCounterUnsat, 7087 mSDtfsCounter, 24755 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3670 GetRequests, 3621 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36298occurred in iteration=20, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 31348 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 11478 NumberOfCodeBlocks, 11478 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 12259 ConstructedInterpolants, 247 QuantifiedInterpolants, 70137 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3354 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 10908/12132 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 [2023-12-16 02:08:52,533 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown