/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 22:19:28,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 22:19:28,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 22:19:28,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 22:19:28,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 22:19:28,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 22:19:28,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 22:19:28,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 22:19:28,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 22:19:28,182 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 22:19:28,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 22:19:28,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 22:19:28,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 22:19:28,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 22:19:28,184 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 22:19:28,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 22:19:28,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 22:19:28,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 22:19:28,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 22:19:28,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 22:19:28,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 22:19:28,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 22:19:28,186 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 22:19:28,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 22:19:28,186 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 22:19:28,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 22:19:28,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 22:19:28,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 22:19:28,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 22:19:28,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 22:19:28,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 22:19:28,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 22:19:28,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 22:19:28,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 22:19:28,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 22:19:28,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 22:19:28,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 22:19:28,189 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 22:19:28,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 22:19:28,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 22:19:28,189 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 22:19:28,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 22:19:28,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 22:19:28,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 22:19:28,417 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 22:19:28,417 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 22:19:28,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2023-12-25 22:19:29,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 22:19:29,823 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 22:19:29,823 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2023-12-25 22:19:29,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3df8eff8/b53ff550d2fc4a5c9965062f878105db/FLAGccd8a5975 [2023-12-25 22:19:29,846 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3df8eff8/b53ff550d2fc4a5c9965062f878105db [2023-12-25 22:19:29,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 22:19:29,849 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 22:19:29,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 22:19:29,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 22:19:29,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 22:19:29,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:19:29" (1/1) ... [2023-12-25 22:19:29,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e954115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:29, skipping insertion in model container [2023-12-25 22:19:29,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:19:29" (1/1) ... [2023-12-25 22:19:29,917 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 22:19:30,076 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1256,1269] [2023-12-25 22:19:30,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 22:19:30,294 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 22:19:30,302 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1256,1269] [2023-12-25 22:19:30,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 22:19:30,401 INFO L206 MainTranslator]: Completed translation [2023-12-25 22:19:30,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30 WrapperNode [2023-12-25 22:19:30,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 22:19:30,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 22:19:30,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 22:19:30,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 22:19:30,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,616 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1919 [2023-12-25 22:19:30,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 22:19:30,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 22:19:30,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 22:19:30,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 22:19:30,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,715 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]. [2023-12-25 22:19:30,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 22:19:30,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 22:19:30,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 22:19:30,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 22:19:30,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (1/1) ... [2023-12-25 22:19:30,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 22:19:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:19:30,904 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) [2023-12-25 22:19:31,015 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 [2023-12-25 22:19:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 22:19:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 22:19:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 22:19:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 22:19:31,210 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 22:19:31,212 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 22:19:32,309 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 22:19:32,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 22:19:32,357 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 22:19:32,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:19:32 BoogieIcfgContainer [2023-12-25 22:19:32,359 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 22:19:32,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 22:19:32,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 22:19:32,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 22:19:32,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 10:19:29" (1/3) ... [2023-12-25 22:19:32,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331ade22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:19:32, skipping insertion in model container [2023-12-25 22:19:32,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:19:30" (2/3) ... [2023-12-25 22:19:32,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331ade22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:19:32, skipping insertion in model container [2023-12-25 22:19:32,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:19:32" (3/3) ... [2023-12-25 22:19:32,365 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_state_machine.c [2023-12-25 22:19:32,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 22:19:32,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 22:19:32,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 22:19:32,430 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;@31ad2226, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 22:19:32,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 22:19:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 373 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-25 22:19:32,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:32,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:32,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:32,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:32,446 INFO L85 PathProgramCache]: Analyzing trace with hash -63316659, now seen corresponding path program 1 times [2023-12-25 22:19:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:32,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597734052] [2023-12-25 22:19:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597734052] [2023-12-25 22:19:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597734052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:32,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:32,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:32,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627100944] [2023-12-25 22:19:32,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:32,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:19:32,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:32,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:19:32,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:19:32,887 INFO L87 Difference]: Start difference. First operand has 374 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 373 states have internal predecessors, (620), 0 states have call successors, (0), 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 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:32,979 INFO L93 Difference]: Finished difference Result 711 states and 1181 transitions. [2023-12-25 22:19:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:19:32,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-25 22:19:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:32,995 INFO L225 Difference]: With dead ends: 711 [2023-12-25 22:19:32,995 INFO L226 Difference]: Without dead ends: 374 [2023-12-25 22:19:33,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:19:33,006 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:33,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1834 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-25 22:19:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-12-25 22:19:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.6568364611260054) internal successors, (618), 373 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 618 transitions. [2023-12-25 22:19:33,060 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 618 transitions. Word has length 32 [2023-12-25 22:19:33,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:33,060 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 618 transitions. [2023-12-25 22:19:33,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 618 transitions. [2023-12-25 22:19:33,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 22:19:33,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:33,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 22:19:33,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:33,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1961031731, now seen corresponding path program 1 times [2023-12-25 22:19:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:33,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308030054] [2023-12-25 22:19:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:33,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:33,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:33,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308030054] [2023-12-25 22:19:33,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308030054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:33,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:33,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:33,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617704724] [2023-12-25 22:19:33,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:33,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:19:33,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:33,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:19:33,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:19:33,198 INFO L87 Difference]: Start difference. First operand 374 states and 618 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:33,220 INFO L93 Difference]: Finished difference Result 714 states and 1179 transitions. [2023-12-25 22:19:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:19:33,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-25 22:19:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:33,222 INFO L225 Difference]: With dead ends: 714 [2023-12-25 22:19:33,222 INFO L226 Difference]: Without dead ends: 377 [2023-12-25 22:19:33,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:19:33,225 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:33,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1832 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-25 22:19:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 376. [2023-12-25 22:19:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.6533333333333333) internal successors, (620), 375 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 620 transitions. [2023-12-25 22:19:33,234 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 620 transitions. Word has length 33 [2023-12-25 22:19:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:33,234 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 620 transitions. [2023-12-25 22:19:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 620 transitions. [2023-12-25 22:19:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 22:19:33,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:33,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:33,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 22:19:33,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:33,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash -874661275, now seen corresponding path program 1 times [2023-12-25 22:19:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:33,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753488679] [2023-12-25 22:19:33,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:33,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:33,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:33,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753488679] [2023-12-25 22:19:33,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753488679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:33,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:33,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:33,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366618358] [2023-12-25 22:19:33,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:33,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:33,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:33,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:33,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:33,420 INFO L87 Difference]: Start difference. First operand 376 states and 620 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:33,504 INFO L93 Difference]: Finished difference Result 1047 states and 1728 transitions. [2023-12-25 22:19:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-25 22:19:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:33,507 INFO L225 Difference]: With dead ends: 1047 [2023-12-25 22:19:33,507 INFO L226 Difference]: Without dead ends: 708 [2023-12-25 22:19:33,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:33,511 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 2232 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:33,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 1810 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-12-25 22:19:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 378. [2023-12-25 22:19:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.6498673740053051) internal successors, (622), 377 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 622 transitions. [2023-12-25 22:19:33,519 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 622 transitions. Word has length 34 [2023-12-25 22:19:33,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:33,519 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 622 transitions. [2023-12-25 22:19:33,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 622 transitions. [2023-12-25 22:19:33,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-25 22:19:33,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:33,534 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:33,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 22:19:33,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:33,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:33,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1099517171, now seen corresponding path program 1 times [2023-12-25 22:19:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:33,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727249034] [2023-12-25 22:19:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:33,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:35,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:35,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727249034] [2023-12-25 22:19:35,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727249034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:35,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:35,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676702923] [2023-12-25 22:19:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:35,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:35,223 INFO L87 Difference]: Start difference. First operand 378 states and 622 transitions. Second operand has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:35,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:35,328 INFO L93 Difference]: Finished difference Result 1070 states and 1760 transitions. [2023-12-25 22:19:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:35,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2023-12-25 22:19:35,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:35,331 INFO L225 Difference]: With dead ends: 1070 [2023-12-25 22:19:35,331 INFO L226 Difference]: Without dead ends: 731 [2023-12-25 22:19:35,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:35,332 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 2251 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:35,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2251 Valid, 1809 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-25 22:19:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 394. [2023-12-25 22:19:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.638676844783715) internal successors, (644), 393 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 644 transitions. [2023-12-25 22:19:35,339 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 644 transitions. Word has length 257 [2023-12-25 22:19:35,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:35,340 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 644 transitions. [2023-12-25 22:19:35,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 644 transitions. [2023-12-25 22:19:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-25 22:19:35,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:35,342 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:35,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 22:19:35,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:35,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash 810762013, now seen corresponding path program 1 times [2023-12-25 22:19:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190039809] [2023-12-25 22:19:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:35,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:36,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:36,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190039809] [2023-12-25 22:19:36,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190039809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:36,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:36,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211344917] [2023-12-25 22:19:36,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:36,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:36,961 INFO L87 Difference]: Start difference. First operand 394 states and 644 transitions. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:37,059 INFO L93 Difference]: Finished difference Result 1127 states and 1853 transitions. [2023-12-25 22:19:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:37,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 258 [2023-12-25 22:19:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:37,062 INFO L225 Difference]: With dead ends: 1127 [2023-12-25 22:19:37,062 INFO L226 Difference]: Without dead ends: 788 [2023-12-25 22:19:37,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:37,065 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 2303 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:37,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 1912 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-25 22:19:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 451. [2023-12-25 22:19:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.6377777777777778) internal successors, (737), 450 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 737 transitions. [2023-12-25 22:19:37,074 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 737 transitions. Word has length 258 [2023-12-25 22:19:37,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:37,075 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 737 transitions. [2023-12-25 22:19:37,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 737 transitions. [2023-12-25 22:19:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-25 22:19:37,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:37,077 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:37,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 22:19:37,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:37,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1043761759, now seen corresponding path program 1 times [2023-12-25 22:19:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998798053] [2023-12-25 22:19:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:37,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:38,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998798053] [2023-12-25 22:19:38,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998798053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:38,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:38,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:38,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907007972] [2023-12-25 22:19:38,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:38,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:38,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:38,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:38,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:38,651 INFO L87 Difference]: Start difference. First operand 451 states and 737 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:38,754 INFO L93 Difference]: Finished difference Result 1178 states and 1936 transitions. [2023-12-25 22:19:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:38,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2023-12-25 22:19:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:38,757 INFO L225 Difference]: With dead ends: 1178 [2023-12-25 22:19:38,758 INFO L226 Difference]: Without dead ends: 839 [2023-12-25 22:19:38,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:38,759 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 2352 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:38,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 1992 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-12-25 22:19:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 501. [2023-12-25 22:19:38,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.638) internal successors, (819), 500 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 819 transitions. [2023-12-25 22:19:38,773 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 819 transitions. Word has length 259 [2023-12-25 22:19:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:38,773 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 819 transitions. [2023-12-25 22:19:38,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:38,774 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 819 transitions. [2023-12-25 22:19:38,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-25 22:19:38,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:38,776 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:38,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 22:19:38,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:38,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:38,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1085689759, now seen corresponding path program 1 times [2023-12-25 22:19:38,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:38,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341061480] [2023-12-25 22:19:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:40,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:40,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341061480] [2023-12-25 22:19:40,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341061480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:40,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:40,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013402571] [2023-12-25 22:19:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:40,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:40,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:40,261 INFO L87 Difference]: Start difference. First operand 501 states and 819 transitions. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:40,370 INFO L93 Difference]: Finished difference Result 1205 states and 1980 transitions. [2023-12-25 22:19:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:40,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2023-12-25 22:19:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:40,373 INFO L225 Difference]: With dead ends: 1205 [2023-12-25 22:19:40,373 INFO L226 Difference]: Without dead ends: 866 [2023-12-25 22:19:40,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:40,376 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 2376 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:40,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 2035 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-12-25 22:19:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2023-12-25 22:19:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.637571157495256) internal successors, (863), 527 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 863 transitions. [2023-12-25 22:19:40,389 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 863 transitions. Word has length 260 [2023-12-25 22:19:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:40,389 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 863 transitions. [2023-12-25 22:19:40,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 863 transitions. [2023-12-25 22:19:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-25 22:19:40,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:40,392 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:40,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 22:19:40,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:40,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:40,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1976789577, now seen corresponding path program 1 times [2023-12-25 22:19:40,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:40,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12826100] [2023-12-25 22:19:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:40,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:41,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12826100] [2023-12-25 22:19:41,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12826100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:41,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:41,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:19:41,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255196601] [2023-12-25 22:19:41,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:41,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:19:41,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:19:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:19:41,754 INFO L87 Difference]: Start difference. First operand 528 states and 863 transitions. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:41,898 INFO L93 Difference]: Finished difference Result 1386 states and 2280 transitions. [2023-12-25 22:19:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:19:41,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2023-12-25 22:19:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:41,901 INFO L225 Difference]: With dead ends: 1386 [2023-12-25 22:19:41,901 INFO L226 Difference]: Without dead ends: 1047 [2023-12-25 22:19:41,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:19:41,903 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 2427 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2427 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:41,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2427 Valid, 3625 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-12-25 22:19:41,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 531. [2023-12-25 22:19:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.6358490566037736) internal successors, (867), 530 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 867 transitions. [2023-12-25 22:19:41,911 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 867 transitions. Word has length 261 [2023-12-25 22:19:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:41,912 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 867 transitions. [2023-12-25 22:19:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 867 transitions. [2023-12-25 22:19:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-25 22:19:41,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:41,913 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:41,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 22:19:41,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:41,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1370125753, now seen corresponding path program 1 times [2023-12-25 22:19:41,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:41,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813678897] [2023-12-25 22:19:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:43,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:43,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813678897] [2023-12-25 22:19:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813678897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:43,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:43,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:43,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297126283] [2023-12-25 22:19:43,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:43,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:43,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:43,121 INFO L87 Difference]: Start difference. First operand 531 states and 867 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:43,213 INFO L93 Difference]: Finished difference Result 1234 states and 2026 transitions. [2023-12-25 22:19:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:43,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2023-12-25 22:19:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:43,216 INFO L225 Difference]: With dead ends: 1234 [2023-12-25 22:19:43,216 INFO L226 Difference]: Without dead ends: 895 [2023-12-25 22:19:43,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:43,218 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 2400 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:43,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 2078 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2023-12-25 22:19:43,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 557. [2023-12-25 22:19:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.6348920863309353) internal successors, (909), 556 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 909 transitions. [2023-12-25 22:19:43,226 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 909 transitions. Word has length 261 [2023-12-25 22:19:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:43,226 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 909 transitions. [2023-12-25 22:19:43,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 909 transitions. [2023-12-25 22:19:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-25 22:19:43,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:43,228 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:43,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 22:19:43,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:43,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:43,231 INFO L85 PathProgramCache]: Analyzing trace with hash 867777781, now seen corresponding path program 1 times [2023-12-25 22:19:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:43,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150733212] [2023-12-25 22:19:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:43,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:44,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:44,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150733212] [2023-12-25 22:19:44,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150733212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:44,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:44,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:44,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033196295] [2023-12-25 22:19:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:44,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:44,408 INFO L87 Difference]: Start difference. First operand 557 states and 909 transitions. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:44,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:44,503 INFO L93 Difference]: Finished difference Result 1288 states and 2115 transitions. [2023-12-25 22:19:44,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:44,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2023-12-25 22:19:44,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:44,506 INFO L225 Difference]: With dead ends: 1288 [2023-12-25 22:19:44,506 INFO L226 Difference]: Without dead ends: 949 [2023-12-25 22:19:44,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:44,507 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 2451 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2451 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:44,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2451 Valid, 2165 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-12-25 22:19:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 611. [2023-12-25 22:19:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.6360655737704919) internal successors, (998), 610 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 998 transitions. [2023-12-25 22:19:44,516 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 998 transitions. Word has length 262 [2023-12-25 22:19:44,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:44,516 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 998 transitions. [2023-12-25 22:19:44,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 998 transitions. [2023-12-25 22:19:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-25 22:19:44,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:44,518 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:44,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 22:19:44,518 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:44,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1090342117, now seen corresponding path program 1 times [2023-12-25 22:19:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:44,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544810053] [2023-12-25 22:19:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:44,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:45,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:45,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544810053] [2023-12-25 22:19:45,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544810053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:45,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:45,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:19:45,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583260667] [2023-12-25 22:19:45,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:45,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:19:45,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:19:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:19:45,887 INFO L87 Difference]: Start difference. First operand 611 states and 998 transitions. Second operand has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:46,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:46,058 INFO L93 Difference]: Finished difference Result 1388 states and 2280 transitions. [2023-12-25 22:19:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:19:46,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2023-12-25 22:19:46,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:46,062 INFO L225 Difference]: With dead ends: 1388 [2023-12-25 22:19:46,062 INFO L226 Difference]: Without dead ends: 1049 [2023-12-25 22:19:46,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:19:46,064 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 2067 mSDsluCounter, 3223 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:46,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 4365 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-12-25 22:19:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 614. [2023-12-25 22:19:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.6345840130505709) internal successors, (1002), 613 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1002 transitions. [2023-12-25 22:19:46,076 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1002 transitions. Word has length 263 [2023-12-25 22:19:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:46,076 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1002 transitions. [2023-12-25 22:19:46,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1002 transitions. [2023-12-25 22:19:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-25 22:19:46,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:46,078 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:46,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 22:19:46,079 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:46,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1470520729, now seen corresponding path program 1 times [2023-12-25 22:19:46,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:46,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299349528] [2023-12-25 22:19:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:46,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299349528] [2023-12-25 22:19:47,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299349528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:47,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:47,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:47,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112685305] [2023-12-25 22:19:47,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:47,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:47,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:47,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:47,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:47,520 INFO L87 Difference]: Start difference. First operand 614 states and 1002 transitions. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:47,614 INFO L93 Difference]: Finished difference Result 1344 states and 2206 transitions. [2023-12-25 22:19:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:47,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2023-12-25 22:19:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:47,617 INFO L225 Difference]: With dead ends: 1344 [2023-12-25 22:19:47,617 INFO L226 Difference]: Without dead ends: 1005 [2023-12-25 22:19:47,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:47,620 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 2502 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:47,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2502 Valid, 2252 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:47,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2023-12-25 22:19:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 667. [2023-12-25 22:19:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 1.635135135135135) internal successors, (1089), 666 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1089 transitions. [2023-12-25 22:19:47,631 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1089 transitions. Word has length 263 [2023-12-25 22:19:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:47,631 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1089 transitions. [2023-12-25 22:19:47,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1089 transitions. [2023-12-25 22:19:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-25 22:19:47,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:47,633 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:47,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 22:19:47,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:47,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash 115862367, now seen corresponding path program 1 times [2023-12-25 22:19:47,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403923819] [2023-12-25 22:19:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403923819] [2023-12-25 22:19:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403923819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:48,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:48,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:19:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914955771] [2023-12-25 22:19:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:48,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:19:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:19:48,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:19:48,975 INFO L87 Difference]: Start difference. First operand 667 states and 1089 transitions. Second operand has 7 states, 7 states have (on average 37.714285714285715) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:49,120 INFO L93 Difference]: Finished difference Result 1498 states and 2454 transitions. [2023-12-25 22:19:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:19:49,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.714285714285715) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2023-12-25 22:19:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:49,123 INFO L225 Difference]: With dead ends: 1498 [2023-12-25 22:19:49,123 INFO L226 Difference]: Without dead ends: 1053 [2023-12-25 22:19:49,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:19:49,125 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 2353 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:49,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 4029 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-12-25 22:19:49,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 669. [2023-12-25 22:19:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.6332335329341316) internal successors, (1091), 668 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1091 transitions. [2023-12-25 22:19:49,141 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1091 transitions. Word has length 264 [2023-12-25 22:19:49,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:49,141 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1091 transitions. [2023-12-25 22:19:49,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.714285714285715) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1091 transitions. [2023-12-25 22:19:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-25 22:19:49,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:49,143 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 22:19:49,143 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:49,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1843007329, now seen corresponding path program 1 times [2023-12-25 22:19:49,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:49,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26183317] [2023-12-25 22:19:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:50,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:50,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26183317] [2023-12-25 22:19:50,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26183317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:50,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:50,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:50,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741035928] [2023-12-25 22:19:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:50,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:50,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:50,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:50,455 INFO L87 Difference]: Start difference. First operand 669 states and 1091 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:50,542 INFO L93 Difference]: Finished difference Result 1347 states and 2205 transitions. [2023-12-25 22:19:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:50,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2023-12-25 22:19:50,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:50,544 INFO L225 Difference]: With dead ends: 1347 [2023-12-25 22:19:50,545 INFO L226 Difference]: Without dead ends: 926 [2023-12-25 22:19:50,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:50,545 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 2418 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:50,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 2121 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:50,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-12-25 22:19:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 669. [2023-12-25 22:19:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.6317365269461077) internal successors, (1090), 668 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:50,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1090 transitions. [2023-12-25 22:19:50,556 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1090 transitions. Word has length 264 [2023-12-25 22:19:50,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:50,556 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1090 transitions. [2023-12-25 22:19:50,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1090 transitions. [2023-12-25 22:19:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-25 22:19:50,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:50,558 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:50,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 22:19:50,558 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:50,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1094980727, now seen corresponding path program 1 times [2023-12-25 22:19:50,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:50,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182058087] [2023-12-25 22:19:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:51,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:51,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182058087] [2023-12-25 22:19:51,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182058087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:51,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:51,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:19:51,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334994794] [2023-12-25 22:19:51,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:51,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:19:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:51,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:19:51,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:19:51,843 INFO L87 Difference]: Start difference. First operand 669 states and 1090 transitions. Second operand has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:52,005 INFO L93 Difference]: Finished difference Result 1473 states and 2410 transitions. [2023-12-25 22:19:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:19:52,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2023-12-25 22:19:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:52,008 INFO L225 Difference]: With dead ends: 1473 [2023-12-25 22:19:52,008 INFO L226 Difference]: Without dead ends: 1055 [2023-12-25 22:19:52,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:19:52,010 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 2079 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 4314 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:52,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 4314 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:52,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2023-12-25 22:19:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 671. [2023-12-25 22:19:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 1.6298507462686567) internal successors, (1092), 670 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1092 transitions. [2023-12-25 22:19:52,020 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1092 transitions. Word has length 265 [2023-12-25 22:19:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:52,021 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1092 transitions. [2023-12-25 22:19:52,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1092 transitions. [2023-12-25 22:19:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-25 22:19:52,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:52,023 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:52,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 22:19:52,023 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:52,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1848601351, now seen corresponding path program 1 times [2023-12-25 22:19:52,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:52,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756433427] [2023-12-25 22:19:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:52,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:53,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:53,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756433427] [2023-12-25 22:19:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756433427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:53,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:53,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438801405] [2023-12-25 22:19:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:53,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:53,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:53,237 INFO L87 Difference]: Start difference. First operand 671 states and 1092 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:53,328 INFO L93 Difference]: Finished difference Result 1347 states and 2205 transitions. [2023-12-25 22:19:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:53,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2023-12-25 22:19:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:53,331 INFO L225 Difference]: With dead ends: 1347 [2023-12-25 22:19:53,331 INFO L226 Difference]: Without dead ends: 982 [2023-12-25 22:19:53,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:53,331 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 2469 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:53,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2469 Valid, 2207 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:19:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-12-25 22:19:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 671. [2023-12-25 22:19:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 1.628358208955224) internal successors, (1091), 670 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1091 transitions. [2023-12-25 22:19:53,342 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1091 transitions. Word has length 265 [2023-12-25 22:19:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:53,343 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1091 transitions. [2023-12-25 22:19:53,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1091 transitions. [2023-12-25 22:19:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-25 22:19:53,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:53,345 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:53,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 22:19:53,345 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:53,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash -840122397, now seen corresponding path program 1 times [2023-12-25 22:19:53,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:53,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881955696] [2023-12-25 22:19:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:53,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881955696] [2023-12-25 22:19:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881955696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:19:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734459927] [2023-12-25 22:19:54,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:19:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:19:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:19:54,397 INFO L87 Difference]: Start difference. First operand 671 states and 1091 transitions. Second operand has 7 states, 7 states have (on average 38.0) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:54,554 INFO L93 Difference]: Finished difference Result 1417 states and 2319 transitions. [2023-12-25 22:19:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:19:54,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 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 266 [2023-12-25 22:19:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:54,557 INFO L225 Difference]: With dead ends: 1417 [2023-12-25 22:19:54,557 INFO L226 Difference]: Without dead ends: 1055 [2023-12-25 22:19:54,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:19:54,558 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 2040 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 4906 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:54,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 4906 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2023-12-25 22:19:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 673. [2023-12-25 22:19:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 1.6264880952380953) internal successors, (1093), 672 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1093 transitions. [2023-12-25 22:19:54,568 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1093 transitions. Word has length 266 [2023-12-25 22:19:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:54,568 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1093 transitions. [2023-12-25 22:19:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1093 transitions. [2023-12-25 22:19:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-25 22:19:54,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:54,569 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:54,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 22:19:54,569 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:54,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:54,570 INFO L85 PathProgramCache]: Analyzing trace with hash -406393311, now seen corresponding path program 1 times [2023-12-25 22:19:54,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:54,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753950806] [2023-12-25 22:19:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:54,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:55,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:55,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753950806] [2023-12-25 22:19:55,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753950806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:55,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:55,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:19:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334901263] [2023-12-25 22:19:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:19:55,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:19:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:19:55,778 INFO L87 Difference]: Start difference. First operand 673 states and 1093 transitions. Second operand has 7 states, 7 states have (on average 38.0) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:55,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:55,927 INFO L93 Difference]: Finished difference Result 1396 states and 2285 transitions. [2023-12-25 22:19:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:19:55,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 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 266 [2023-12-25 22:19:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:55,930 INFO L225 Difference]: With dead ends: 1396 [2023-12-25 22:19:55,930 INFO L226 Difference]: Without dead ends: 1057 [2023-12-25 22:19:55,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:19:55,931 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 2022 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 4452 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:55,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 4452 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2023-12-25 22:19:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 676. [2023-12-25 22:19:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.6251851851851853) internal successors, (1097), 675 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1097 transitions. [2023-12-25 22:19:55,943 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1097 transitions. Word has length 266 [2023-12-25 22:19:55,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:55,943 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 1097 transitions. [2023-12-25 22:19:55,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1097 transitions. [2023-12-25 22:19:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-25 22:19:55,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:55,945 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:55,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 22:19:55,945 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:55,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2043206819, now seen corresponding path program 1 times [2023-12-25 22:19:55,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:55,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267795835] [2023-12-25 22:19:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:57,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:57,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267795835] [2023-12-25 22:19:57,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267795835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:57,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:57,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 22:19:57,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609971407] [2023-12-25 22:19:57,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:57,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 22:19:57,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 22:19:57,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:19:57,334 INFO L87 Difference]: Start difference. First operand 676 states and 1097 transitions. Second operand has 9 states, 9 states have (on average 29.555555555555557) internal successors, (266), 8 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:57,592 INFO L93 Difference]: Finished difference Result 1710 states and 2767 transitions. [2023-12-25 22:19:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 22:19:57,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.555555555555557) internal successors, (266), 8 states have internal predecessors, (266), 0 states have call successors, (0), 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 266 [2023-12-25 22:19:57,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:57,595 INFO L225 Difference]: With dead ends: 1710 [2023-12-25 22:19:57,595 INFO L226 Difference]: Without dead ends: 1098 [2023-12-25 22:19:57,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-12-25 22:19:57,596 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 5420 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5420 SdHoareTripleChecker+Valid, 4317 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:57,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5420 Valid, 4317 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2023-12-25 22:19:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 679. [2023-12-25 22:19:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.6224188790560472) internal successors, (1100), 678 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1100 transitions. [2023-12-25 22:19:57,611 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1100 transitions. Word has length 266 [2023-12-25 22:19:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:57,612 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1100 transitions. [2023-12-25 22:19:57,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.555555555555557) internal successors, (266), 8 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1100 transitions. [2023-12-25 22:19:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-25 22:19:57,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:57,613 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:57,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 22:19:57,614 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:57,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -738114619, now seen corresponding path program 1 times [2023-12-25 22:19:57,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:57,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599192695] [2023-12-25 22:19:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:57,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:59,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:59,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599192695] [2023-12-25 22:19:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599192695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:59,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:59,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:59,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546908812] [2023-12-25 22:19:59,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:59,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:59,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:59,331 INFO L87 Difference]: Start difference. First operand 679 states and 1100 transitions. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:59,441 INFO L93 Difference]: Finished difference Result 1370 states and 2218 transitions. [2023-12-25 22:19:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:19:59,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 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 267 [2023-12-25 22:19:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:59,444 INFO L225 Difference]: With dead ends: 1370 [2023-12-25 22:19:59,444 INFO L226 Difference]: Without dead ends: 737 [2023-12-25 22:19:59,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:19:59,446 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 2212 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:59,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 1804 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:19:59,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-12-25 22:19:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 679. [2023-12-25 22:19:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.62094395280236) internal successors, (1099), 678 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1099 transitions. [2023-12-25 22:19:59,460 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1099 transitions. Word has length 267 [2023-12-25 22:19:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:59,460 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1099 transitions. [2023-12-25 22:19:59,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1099 transitions. [2023-12-25 22:19:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-25 22:19:59,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:59,461 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:19:59,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 22:19:59,462 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:59,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:59,462 INFO L85 PathProgramCache]: Analyzing trace with hash 962391203, now seen corresponding path program 1 times [2023-12-25 22:19:59,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:59,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569394154] [2023-12-25 22:19:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:59,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:19:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:19:59,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:19:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569394154] [2023-12-25 22:19:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569394154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:19:59,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:19:59,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:19:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783311332] [2023-12-25 22:19:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:19:59,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:19:59,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:19:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:19:59,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:19:59,985 INFO L87 Difference]: Start difference. First operand 679 states and 1099 transitions. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:20:00,048 INFO L93 Difference]: Finished difference Result 1370 states and 2217 transitions. [2023-12-25 22:20:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:20:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2023-12-25 22:20:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:20:00,050 INFO L225 Difference]: With dead ends: 1370 [2023-12-25 22:20:00,050 INFO L226 Difference]: Without dead ends: 737 [2023-12-25 22:20:00,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:20:00,052 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2208 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:20:00,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2208 Valid, 1821 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:20:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-12-25 22:20:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 679. [2023-12-25 22:20:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.6194690265486726) internal successors, (1098), 678 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1098 transitions. [2023-12-25 22:20:00,068 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1098 transitions. Word has length 268 [2023-12-25 22:20:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:20:00,068 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1098 transitions. [2023-12-25 22:20:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1098 transitions. [2023-12-25 22:20:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-25 22:20:00,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:20:00,083 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:20:00,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 22:20:00,083 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:20:00,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:20:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -153576923, now seen corresponding path program 1 times [2023-12-25 22:20:00,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:20:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793154133] [2023-12-25 22:20:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:00,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:20:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:01,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:01,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793154133] [2023-12-25 22:20:01,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793154133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:20:01,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:20:01,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 22:20:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427580946] [2023-12-25 22:20:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:20:01,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 22:20:01,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 22:20:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:20:01,751 INFO L87 Difference]: Start difference. First operand 679 states and 1098 transitions. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 9 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:20:02,063 INFO L93 Difference]: Finished difference Result 1683 states and 2724 transitions. [2023-12-25 22:20:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 22:20:02,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 9 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2023-12-25 22:20:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:20:02,066 INFO L225 Difference]: With dead ends: 1683 [2023-12-25 22:20:02,066 INFO L226 Difference]: Without dead ends: 1074 [2023-12-25 22:20:02,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-12-25 22:20:02,069 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 6228 mSDsluCounter, 4245 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6228 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:20:02,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6228 Valid, 4864 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 22:20:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-12-25 22:20:02,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 682. [2023-12-25 22:20:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.6167400881057268) internal successors, (1101), 681 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1101 transitions. [2023-12-25 22:20:02,081 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1101 transitions. Word has length 268 [2023-12-25 22:20:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:20:02,081 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1101 transitions. [2023-12-25 22:20:02,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 9 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1101 transitions. [2023-12-25 22:20:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-25 22:20:02,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:20:02,082 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:20:02,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 22:20:02,083 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:20:02,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:20:02,083 INFO L85 PathProgramCache]: Analyzing trace with hash 495933929, now seen corresponding path program 1 times [2023-12-25 22:20:02,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:20:02,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607991569] [2023-12-25 22:20:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:20:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:03,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607991569] [2023-12-25 22:20:03,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607991569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:20:03,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:20:03,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:20:03,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111458600] [2023-12-25 22:20:03,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:20:03,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:20:03,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:20:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:20:03,864 INFO L87 Difference]: Start difference. First operand 682 states and 1101 transitions. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:20:03,966 INFO L93 Difference]: Finished difference Result 1370 states and 2218 transitions. [2023-12-25 22:20:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:20:03,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 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 269 [2023-12-25 22:20:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:20:03,968 INFO L225 Difference]: With dead ends: 1370 [2023-12-25 22:20:03,969 INFO L226 Difference]: Without dead ends: 764 [2023-12-25 22:20:03,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:20:03,970 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 2227 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:20:03,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2227 Valid, 1838 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:20:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2023-12-25 22:20:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 682. [2023-12-25 22:20:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.6138032305433188) internal successors, (1099), 681 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:03,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1099 transitions. [2023-12-25 22:20:03,981 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1099 transitions. Word has length 269 [2023-12-25 22:20:03,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:20:03,981 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1099 transitions. [2023-12-25 22:20:03,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:03,981 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1099 transitions. [2023-12-25 22:20:03,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-25 22:20:03,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:20:03,983 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:20:03,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-25 22:20:03,983 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:20:03,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:20:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash 455197069, now seen corresponding path program 1 times [2023-12-25 22:20:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:20:03,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191042106] [2023-12-25 22:20:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:03,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:20:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:05,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191042106] [2023-12-25 22:20:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191042106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:20:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:20:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:20:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354450263] [2023-12-25 22:20:05,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:20:05,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:20:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:20:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:20:05,440 INFO L87 Difference]: Start difference. First operand 682 states and 1099 transitions. Second operand has 6 states, 6 states have (on average 45.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:20:05,563 INFO L93 Difference]: Finished difference Result 1370 states and 2219 transitions. [2023-12-25 22:20:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:20:05,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2023-12-25 22:20:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:20:05,567 INFO L225 Difference]: With dead ends: 1370 [2023-12-25 22:20:05,567 INFO L226 Difference]: Without dead ends: 857 [2023-12-25 22:20:05,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:20:05,568 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 2319 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:20:05,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2319 Valid, 2591 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:20:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-12-25 22:20:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 682. [2023-12-25 22:20:05,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.6123348017621146) internal successors, (1098), 681 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1098 transitions. [2023-12-25 22:20:05,585 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1098 transitions. Word has length 270 [2023-12-25 22:20:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:20:05,585 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1098 transitions. [2023-12-25 22:20:05,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1098 transitions. [2023-12-25 22:20:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-25 22:20:05,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:20:05,588 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:20:05,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-25 22:20:05,588 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:20:05,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:20:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash -949994609, now seen corresponding path program 1 times [2023-12-25 22:20:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:20:05,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37711354] [2023-12-25 22:20:05,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:05,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:20:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:07,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:07,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37711354] [2023-12-25 22:20:07,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37711354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:20:07,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407143657] [2023-12-25 22:20:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:07,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:20:07,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:20:07,924 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) [2023-12-25 22:20:07,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 22:20:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:08,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-25 22:20:08,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:20:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:09,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:20:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 22:20:10,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407143657] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:20:10,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:20:10,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 9] total 30 [2023-12-25 22:20:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274058413] [2023-12-25 22:20:10,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:20:10,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 22:20:10,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:10,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 22:20:10,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-12-25 22:20:10,837 INFO L87 Difference]: Start difference. First operand 682 states and 1098 transitions. Second operand has 31 states, 31 states have (on average 25.93548387096774) internal successors, (804), 30 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:20:13,539 INFO L93 Difference]: Finished difference Result 3080 states and 4987 transitions. [2023-12-25 22:20:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-25 22:20:13,540 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 25.93548387096774) internal successors, (804), 30 states have internal predecessors, (804), 0 states have call successors, (0), 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 270 [2023-12-25 22:20:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:20:13,549 INFO L225 Difference]: With dead ends: 3080 [2023-12-25 22:20:13,549 INFO L226 Difference]: Without dead ends: 2450 [2023-12-25 22:20:13,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1174, Invalid=4832, Unknown=0, NotChecked=0, Total=6006 [2023-12-25 22:20:13,552 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 31174 mSDsluCounter, 8836 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31174 SdHoareTripleChecker+Valid, 9374 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:20:13,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31174 Valid, 9374 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 22:20:13,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2023-12-25 22:20:13,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 1023. [2023-12-25 22:20:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 1.5998043052837574) internal successors, (1635), 1022 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1635 transitions. [2023-12-25 22:20:13,581 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1635 transitions. Word has length 270 [2023-12-25 22:20:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:20:13,582 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1635 transitions. [2023-12-25 22:20:13,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 25.93548387096774) internal successors, (804), 30 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1635 transitions. [2023-12-25 22:20:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-25 22:20:13,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:20:13,583 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:20:13,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 22:20:13,792 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,SelfDestructingSolverStorable24 [2023-12-25 22:20:13,792 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:20:13,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:20:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1206737851, now seen corresponding path program 1 times [2023-12-25 22:20:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:20:13,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566970137] [2023-12-25 22:20:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:20:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:14,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:14,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566970137] [2023-12-25 22:20:14,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566970137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:20:14,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:20:14,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:20:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208444448] [2023-12-25 22:20:14,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:20:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:20:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:14,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:20:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:20:14,180 INFO L87 Difference]: Start difference. First operand 1023 states and 1635 transitions. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:20:14,238 INFO L93 Difference]: Finished difference Result 1721 states and 2755 transitions. [2023-12-25 22:20:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:20:14,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2023-12-25 22:20:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:20:14,252 INFO L225 Difference]: With dead ends: 1721 [2023-12-25 22:20:14,252 INFO L226 Difference]: Without dead ends: 1087 [2023-12-25 22:20:14,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:20:14,254 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 2195 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:20:14,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 1820 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:20:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-25 22:20:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1021. [2023-12-25 22:20:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 1.5980392156862746) internal successors, (1630), 1020 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1630 transitions. [2023-12-25 22:20:14,270 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1630 transitions. Word has length 271 [2023-12-25 22:20:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:20:14,270 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1630 transitions. [2023-12-25 22:20:14,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1630 transitions. [2023-12-25 22:20:14,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-25 22:20:14,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:20:14,273 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:20:14,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-25 22:20:14,274 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:20:14,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:20:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1892950741, now seen corresponding path program 1 times [2023-12-25 22:20:14,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:20:14,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384052670] [2023-12-25 22:20:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:20:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:14,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:14,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384052670] [2023-12-25 22:20:14,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384052670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:20:14,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:20:14,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:20:14,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948890719] [2023-12-25 22:20:14,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:20:14,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:20:14,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:20:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:20:14,682 INFO L87 Difference]: Start difference. First operand 1021 states and 1630 transitions. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:20:14,737 INFO L93 Difference]: Finished difference Result 1370 states and 2200 transitions. [2023-12-25 22:20:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:20:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2023-12-25 22:20:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:20:14,739 INFO L225 Difference]: With dead ends: 1370 [2023-12-25 22:20:14,739 INFO L226 Difference]: Without dead ends: 735 [2023-12-25 22:20:14,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:20:14,740 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2169 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:20:14,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2169 Valid, 1814 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:20:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-12-25 22:20:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 727. [2023-12-25 22:20:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 1.606060606060606) internal successors, (1166), 726 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1166 transitions. [2023-12-25 22:20:14,751 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1166 transitions. Word has length 271 [2023-12-25 22:20:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:20:14,751 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1166 transitions. [2023-12-25 22:20:14,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1166 transitions. [2023-12-25 22:20:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-25 22:20:14,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:20:14,754 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:20:14,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-25 22:20:14,754 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:20:14,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:20:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash 604410853, now seen corresponding path program 1 times [2023-12-25 22:20:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:20:14,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605965465] [2023-12-25 22:20:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:20:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 149 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:23,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:23,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605965465] [2023-12-25 22:20:23,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605965465] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:20:23,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291554347] [2023-12-25 22:20:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:23,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:20:23,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:20:23,189 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) [2023-12-25 22:20:23,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 22:20:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:23,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 223 conjunts are in the unsatisfiable core [2023-12-25 22:20:23,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:20:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 209 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:27,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:20:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 15 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:36,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291554347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:20:36,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:20:36,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27, 28] total 65 [2023-12-25 22:20:36,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305671737] [2023-12-25 22:20:36,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:20:36,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-25 22:20:36,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:36,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-25 22:20:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=587, Invalid=3703, Unknown=0, NotChecked=0, Total=4290 [2023-12-25 22:20:36,033 INFO L87 Difference]: Start difference. First operand 727 states and 1166 transitions. Second operand has 66 states, 66 states have (on average 20.151515151515152) internal successors, (1330), 65 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:21:23,698 INFO L93 Difference]: Finished difference Result 21170 states and 34883 transitions. [2023-12-25 22:21:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2023-12-25 22:21:23,699 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 20.151515151515152) internal successors, (1330), 65 states have internal predecessors, (1330), 0 states have call successors, (0), 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 493 [2023-12-25 22:21:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:21:23,729 INFO L225 Difference]: With dead ends: 21170 [2023-12-25 22:21:23,729 INFO L226 Difference]: Without dead ends: 20829 [2023-12-25 22:21:23,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1278 GetRequests, 932 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43507 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=14927, Invalid=105135, Unknown=0, NotChecked=0, Total=120062 [2023-12-25 22:21:23,747 INFO L413 NwaCegarLoop]: 5766 mSDtfsCounter, 42646 mSDsluCounter, 229960 mSDsCounter, 0 mSdLazyCounter, 38652 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42646 SdHoareTripleChecker+Valid, 235726 SdHoareTripleChecker+Invalid, 38720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 38652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:21:23,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42646 Valid, 235726 Invalid, 38720 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [68 Valid, 38652 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2023-12-25 22:21:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20829 states. [2023-12-25 22:21:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20829 to 2616. [2023-12-25 22:21:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2615 states have (on average 1.6191204588910133) internal successors, (4234), 2615 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 4234 transitions. [2023-12-25 22:21:23,944 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 4234 transitions. Word has length 493 [2023-12-25 22:21:23,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:21:23,944 INFO L495 AbstractCegarLoop]: Abstraction has 2616 states and 4234 transitions. [2023-12-25 22:21:23,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 20.151515151515152) internal successors, (1330), 65 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:23,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 4234 transitions. [2023-12-25 22:21:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-25 22:21:23,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:21:23,950 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:21:23,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 22:21:24,162 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,SelfDestructingSolverStorable27 [2023-12-25 22:21:24,163 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:21:24,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:21:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -572198487, now seen corresponding path program 1 times [2023-12-25 22:21:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:21:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689941080] [2023-12-25 22:21:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:21:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:21:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:21:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 13 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:21:28,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:21:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689941080] [2023-12-25 22:21:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689941080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:21:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798114710] [2023-12-25 22:21:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:21:28,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:21:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:21:28,277 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) [2023-12-25 22:21:28,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 22:21:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:21:28,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 3328 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 22:21:28,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:21:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 212 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:21:29,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:21:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 225 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:21:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798114710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:21:31,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:21:31,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 29 [2023-12-25 22:21:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548378127] [2023-12-25 22:21:31,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:21:31,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 22:21:31,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:21:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 22:21:31,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2023-12-25 22:21:31,443 INFO L87 Difference]: Start difference. First operand 2616 states and 4234 transitions. Second operand has 29 states, 29 states have (on average 43.37931034482759) internal successors, (1258), 29 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:21:32,932 INFO L93 Difference]: Finished difference Result 5700 states and 9267 transitions. [2023-12-25 22:21:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-25 22:21:32,937 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 43.37931034482759) internal successors, (1258), 29 states have internal predecessors, (1258), 0 states have call successors, (0), 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 494 [2023-12-25 22:21:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:21:32,943 INFO L225 Difference]: With dead ends: 5700 [2023-12-25 22:21:32,943 INFO L226 Difference]: Without dead ends: 5032 [2023-12-25 22:21:32,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 977 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=664, Invalid=3496, Unknown=0, NotChecked=0, Total=4160 [2023-12-25 22:21:32,948 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 10685 mSDsluCounter, 21130 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10685 SdHoareTripleChecker+Valid, 22747 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 22:21:32,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10685 Valid, 22747 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 22:21:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5032 states. [2023-12-25 22:21:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5032 to 3047. [2023-12-25 22:21:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3047 states, 3046 states have (on average 1.6211424819435325) internal successors, (4938), 3046 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3047 states to 3047 states and 4938 transitions. [2023-12-25 22:21:32,998 INFO L78 Accepts]: Start accepts. Automaton has 3047 states and 4938 transitions. Word has length 494 [2023-12-25 22:21:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:21:32,998 INFO L495 AbstractCegarLoop]: Abstraction has 3047 states and 4938 transitions. [2023-12-25 22:21:32,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 43.37931034482759) internal successors, (1258), 29 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3047 states and 4938 transitions. [2023-12-25 22:21:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-25 22:21:33,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:21:33,003 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:21:33,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 22:21:33,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-25 22:21:33,215 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:21:33,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:21:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1331465191, now seen corresponding path program 1 times [2023-12-25 22:21:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:21:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128334788] [2023-12-25 22:21:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:21:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:21:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:21:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 22:21:35,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:21:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128334788] [2023-12-25 22:21:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128334788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:21:35,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:21:35,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:21:35,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965066838] [2023-12-25 22:21:35,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:21:35,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:21:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:21:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:21:35,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:21:35,687 INFO L87 Difference]: Start difference. First operand 3047 states and 4938 transitions. Second operand has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:21:35,812 INFO L93 Difference]: Finished difference Result 4107 states and 6671 transitions. [2023-12-25 22:21:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:21:35,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 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 494 [2023-12-25 22:21:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:21:35,817 INFO L225 Difference]: With dead ends: 4107 [2023-12-25 22:21:35,817 INFO L226 Difference]: Without dead ends: 3062 [2023-12-25 22:21:35,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:21:35,819 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1413 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:21:35,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 2253 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:21:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2023-12-25 22:21:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3053. [2023-12-25 22:21:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 3052 states have (on average 1.619921363040629) internal successors, (4944), 3052 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 4944 transitions. [2023-12-25 22:21:35,863 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 4944 transitions. Word has length 494 [2023-12-25 22:21:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:21:35,863 INFO L495 AbstractCegarLoop]: Abstraction has 3053 states and 4944 transitions. [2023-12-25 22:21:35,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 4944 transitions. [2023-12-25 22:21:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-25 22:21:35,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:21:35,870 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:21:35,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-25 22:21:35,870 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:21:35,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:21:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash -546572457, now seen corresponding path program 1 times [2023-12-25 22:21:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:21:35,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910483757] [2023-12-25 22:21:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:21:35,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:21:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:21:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-25 22:21:36,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:21:36,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910483757] [2023-12-25 22:21:36,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910483757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:21:36,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:21:36,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:21:36,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684603400] [2023-12-25 22:21:36,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:21:36,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:21:36,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:21:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:21:36,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:21:36,978 INFO L87 Difference]: Start difference. First operand 3053 states and 4944 transitions. Second operand has 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:21:37,057 INFO L93 Difference]: Finished difference Result 5770 states and 9356 transitions. [2023-12-25 22:21:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:21:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 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 494 [2023-12-25 22:21:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:21:37,061 INFO L225 Difference]: With dead ends: 5770 [2023-12-25 22:21:37,061 INFO L226 Difference]: Without dead ends: 2778 [2023-12-25 22:21:37,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:21:37,064 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 2167 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:21:37,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2167 Valid, 1823 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:21:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2023-12-25 22:21:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2716. [2023-12-25 22:21:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.6224677716390423) internal successors, (4405), 2715 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4405 transitions. [2023-12-25 22:21:37,109 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4405 transitions. Word has length 494 [2023-12-25 22:21:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:21:37,109 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 4405 transitions. [2023-12-25 22:21:37,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:21:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4405 transitions. [2023-12-25 22:21:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-25 22:21:37,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:21:37,114 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:21:37,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-25 22:21:37,114 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:21:37,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:21:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 771113877, now seen corresponding path program 1 times [2023-12-25 22:21:37,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:21:37,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174672537] [2023-12-25 22:21:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:21:37,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:21:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:21:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 149 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:21:46,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:21:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174672537] [2023-12-25 22:21:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174672537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:21:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816541381] [2023-12-25 22:21:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:21:46,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:21:46,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:21:46,011 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) [2023-12-25 22:21:46,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 22:21:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:21:46,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 3333 conjuncts, 156 conjunts are in the unsatisfiable core [2023-12-25 22:21:46,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:21:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 167 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:21:49,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:21:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 161 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:21:54,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816541381] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:21:54,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:21:54,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 22, 24] total 54 [2023-12-25 22:21:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385219877] [2023-12-25 22:21:54,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:21:54,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-25 22:21:54,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:21:54,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-25 22:21:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 22:21:54,070 INFO L87 Difference]: Start difference. First operand 2716 states and 4405 transitions. Second operand has 54 states, 54 states have (on average 24.74074074074074) internal successors, (1336), 54 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:03,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:22:03,642 INFO L93 Difference]: Finished difference Result 14709 states and 24112 transitions. [2023-12-25 22:22:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-25 22:22:03,642 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 24.74074074074074) internal successors, (1336), 54 states have internal predecessors, (1336), 0 states have call successors, (0), 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 495 [2023-12-25 22:22:03,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:22:03,667 INFO L225 Difference]: With dead ends: 14709 [2023-12-25 22:22:03,667 INFO L226 Difference]: Without dead ends: 12745 [2023-12-25 22:22:03,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 947 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2999 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1315, Invalid=12025, Unknown=0, NotChecked=0, Total=13340 [2023-12-25 22:22:03,674 INFO L413 NwaCegarLoop]: 2940 mSDtfsCounter, 20957 mSDsluCounter, 66248 mSDsCounter, 0 mSdLazyCounter, 10298 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20957 SdHoareTripleChecker+Valid, 69188 SdHoareTripleChecker+Invalid, 10334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 10298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-25 22:22:03,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20957 Valid, 69188 Invalid, 10334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 10298 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-25 22:22:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12745 states. [2023-12-25 22:22:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12745 to 3562. [2023-12-25 22:22:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 1.6175231676495367) internal successors, (5760), 3561 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 5760 transitions. [2023-12-25 22:22:03,766 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 5760 transitions. Word has length 495 [2023-12-25 22:22:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:22:03,766 INFO L495 AbstractCegarLoop]: Abstraction has 3562 states and 5760 transitions. [2023-12-25 22:22:03,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 24.74074074074074) internal successors, (1336), 54 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 5760 transitions. [2023-12-25 22:22:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-25 22:22:03,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:22:03,770 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:22:03,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 22:22:03,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:22:03,982 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:22:03,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:22:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash -980336739, now seen corresponding path program 1 times [2023-12-25 22:22:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:22:03,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054411712] [2023-12-25 22:22:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:03,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:22:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 149 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:22:14,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:22:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054411712] [2023-12-25 22:22:14,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054411712] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:22:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931060447] [2023-12-25 22:22:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:14,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:22:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:22:14,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:22:14,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 22:22:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:15,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 3337 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-25 22:22:15,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:22:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 149 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:22:17,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:22:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 143 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:22:21,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931060447] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:22:21,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:22:21,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 22] total 54 [2023-12-25 22:22:21,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661504102] [2023-12-25 22:22:21,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:22:21,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-25 22:22:21,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:22:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-25 22:22:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2638, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 22:22:21,388 INFO L87 Difference]: Start difference. First operand 3562 states and 5760 transitions. Second operand has 54 states, 54 states have (on average 24.796296296296298) internal successors, (1339), 54 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:22:24,968 INFO L93 Difference]: Finished difference Result 11530 states and 18758 transitions. [2023-12-25 22:22:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-25 22:22:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 24.796296296296298) internal successors, (1339), 54 states have internal predecessors, (1339), 0 states have call successors, (0), 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 496 [2023-12-25 22:22:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:22:24,978 INFO L225 Difference]: With dead ends: 11530 [2023-12-25 22:22:24,978 INFO L226 Difference]: Without dead ends: 8044 [2023-12-25 22:22:24,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 958 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=893, Invalid=6417, Unknown=0, NotChecked=0, Total=7310 [2023-12-25 22:22:24,983 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 17910 mSDsluCounter, 28281 mSDsCounter, 0 mSdLazyCounter, 4991 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17910 SdHoareTripleChecker+Valid, 29425 SdHoareTripleChecker+Invalid, 5012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:22:24,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17910 Valid, 29425 Invalid, 5012 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 4991 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 22:22:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2023-12-25 22:22:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 3583. [2023-12-25 22:22:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.615857063093244) internal successors, (5788), 3582 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 5788 transitions. [2023-12-25 22:22:25,060 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 5788 transitions. Word has length 496 [2023-12-25 22:22:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:22:25,060 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 5788 transitions. [2023-12-25 22:22:25,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 24.796296296296298) internal successors, (1339), 54 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 5788 transitions. [2023-12-25 22:22:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-12-25 22:22:25,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:22:25,065 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:22:25,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 22:22:25,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-25 22:22:25,277 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:22:25,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:22:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1481568341, now seen corresponding path program 1 times [2023-12-25 22:22:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:22:25,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673655962] [2023-12-25 22:22:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:25,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:22:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 131 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:22:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:22:34,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673655962] [2023-12-25 22:22:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673655962] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:22:34,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202971904] [2023-12-25 22:22:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:34,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:22:34,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:22:34,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:22:34,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 22:22:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:34,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 3341 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-25 22:22:34,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:22:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 22:22:34,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:22:34,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202971904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:22:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:22:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-25 22:22:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466886245] [2023-12-25 22:22:34,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:22:34,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:22:34,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:22:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:22:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:22:34,932 INFO L87 Difference]: Start difference. First operand 3583 states and 5788 transitions. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:22:35,109 INFO L93 Difference]: Finished difference Result 8527 states and 13886 transitions. [2023-12-25 22:22:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:22:35,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 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 497 [2023-12-25 22:22:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:22:35,115 INFO L225 Difference]: With dead ends: 8527 [2023-12-25 22:22:35,115 INFO L226 Difference]: Without dead ends: 6180 [2023-12-25 22:22:35,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-25 22:22:35,118 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 1640 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:22:35,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 2603 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:22:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2023-12-25 22:22:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 3713. [2023-12-25 22:22:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3712 states have (on average 1.6158405172413792) internal successors, (5998), 3712 states have internal predecessors, (5998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 5998 transitions. [2023-12-25 22:22:35,174 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 5998 transitions. Word has length 497 [2023-12-25 22:22:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:22:35,175 INFO L495 AbstractCegarLoop]: Abstraction has 3713 states and 5998 transitions. [2023-12-25 22:22:35,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 5998 transitions. [2023-12-25 22:22:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2023-12-25 22:22:35,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:22:35,179 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:22:35,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 22:22:35,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:22:35,390 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:22:35,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:22:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1362336271, now seen corresponding path program 1 times [2023-12-25 22:22:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:22:35,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910340234] [2023-12-25 22:22:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:35,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:22:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 159 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:22:40,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:22:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910340234] [2023-12-25 22:22:40,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910340234] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:22:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725620672] [2023-12-25 22:22:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:40,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:22:40,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:22:40,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:22:40,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 22:22:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:40,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 3344 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:22:40,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:22:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-25 22:22:41,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:22:41,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725620672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:22:41,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:22:41,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:22:41,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147101380] [2023-12-25 22:22:41,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:22:41,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:22:41,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:22:41,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:22:41,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:22:41,077 INFO L87 Difference]: Start difference. First operand 3713 states and 5998 transitions. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:22:41,331 INFO L93 Difference]: Finished difference Result 11756 states and 19075 transitions. [2023-12-25 22:22:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:22:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 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 498 [2023-12-25 22:22:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:22:41,338 INFO L225 Difference]: With dead ends: 11756 [2023-12-25 22:22:41,338 INFO L226 Difference]: Without dead ends: 8401 [2023-12-25 22:22:41,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:22:41,342 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 1502 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 4109 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:22:41,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 4109 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:22:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2023-12-25 22:22:41,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 3898. [2023-12-25 22:22:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 3897 states have (on average 1.6148319219912752) internal successors, (6293), 3897 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 6293 transitions. [2023-12-25 22:22:41,408 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 6293 transitions. Word has length 498 [2023-12-25 22:22:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:22:41,409 INFO L495 AbstractCegarLoop]: Abstraction has 3898 states and 6293 transitions. [2023-12-25 22:22:41,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:41,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 6293 transitions. [2023-12-25 22:22:41,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2023-12-25 22:22:41,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:22:41,414 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:22:41,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 22:22:41,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:22:41,626 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:22:41,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:22:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1984579059, now seen corresponding path program 1 times [2023-12-25 22:22:41,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:22:41,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404410462] [2023-12-25 22:22:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:41,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:22:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 113 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:22:49,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:22:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404410462] [2023-12-25 22:22:49,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404410462] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:22:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700675720] [2023-12-25 22:22:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:49,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:22:49,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:22:49,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:22:49,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 22:22:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:50,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-25 22:22:50,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:22:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 22:22:50,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:22:50,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700675720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:22:50,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:22:50,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-25 22:22:50,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884908895] [2023-12-25 22:22:50,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:22:50,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:22:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:22:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:22:50,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:22:50,605 INFO L87 Difference]: Start difference. First operand 3898 states and 6293 transitions. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:22:50,829 INFO L93 Difference]: Finished difference Result 9632 states and 15671 transitions. [2023-12-25 22:22:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:22:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 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 498 [2023-12-25 22:22:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:22:50,835 INFO L225 Difference]: With dead ends: 9632 [2023-12-25 22:22:50,835 INFO L226 Difference]: Without dead ends: 7020 [2023-12-25 22:22:50,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 499 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-25 22:22:50,838 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 1708 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:22:50,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 2646 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:22:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2023-12-25 22:22:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 4033. [2023-12-25 22:22:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 4032 states have (on average 1.615327380952381) internal successors, (6513), 4032 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 6513 transitions. [2023-12-25 22:22:50,905 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 6513 transitions. Word has length 498 [2023-12-25 22:22:50,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:22:50,906 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 6513 transitions. [2023-12-25 22:22:50,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:50,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 6513 transitions. [2023-12-25 22:22:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-12-25 22:22:50,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:22:50,909 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:22:50,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 22:22:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-25 22:22:51,121 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:22:51,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:22:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2062588417, now seen corresponding path program 1 times [2023-12-25 22:22:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:22:51,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950654901] [2023-12-25 22:22:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:51,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:22:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 160 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:22:55,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:22:55,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950654901] [2023-12-25 22:22:55,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950654901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:22:55,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912418814] [2023-12-25 22:22:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:55,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:22:55,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:22:55,960 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:22:55,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 22:22:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:22:56,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 3347 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:22:56,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:22:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-25 22:22:56,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:22:56,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912418814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:22:56,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:22:56,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:22:56,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123374363] [2023-12-25 22:22:56,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:22:56,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:22:56,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:22:56,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:22:56,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:22:56,783 INFO L87 Difference]: Start difference. First operand 4033 states and 6513 transitions. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:22:57,057 INFO L93 Difference]: Finished difference Result 12639 states and 20505 transitions. [2023-12-25 22:22:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:22:57,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 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 499 [2023-12-25 22:22:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:22:57,065 INFO L225 Difference]: With dead ends: 12639 [2023-12-25 22:22:57,065 INFO L226 Difference]: Without dead ends: 9072 [2023-12-25 22:22:57,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:22:57,070 INFO L413 NwaCegarLoop]: 1222 mSDtfsCounter, 1568 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:22:57,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 4286 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:22:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2023-12-25 22:22:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 4222. [2023-12-25 22:22:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4222 states, 4221 states have (on average 1.6138355839848377) internal successors, (6812), 4221 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 6812 transitions. [2023-12-25 22:22:57,149 INFO L78 Accepts]: Start accepts. Automaton has 4222 states and 6812 transitions. Word has length 499 [2023-12-25 22:22:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:22:57,150 INFO L495 AbstractCegarLoop]: Abstraction has 4222 states and 6812 transitions. [2023-12-25 22:22:57,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:22:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4222 states and 6812 transitions. [2023-12-25 22:22:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-12-25 22:22:57,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:22:57,154 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:22:57,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 22:22:57,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-25 22:22:57,366 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:22:57,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:22:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1557218753, now seen corresponding path program 1 times [2023-12-25 22:22:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:22:57,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835575139] [2023-12-25 22:22:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:22:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 141 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:23:02,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:02,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835575139] [2023-12-25 22:23:02,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835575139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:23:02,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419675428] [2023-12-25 22:23:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:02,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:23:02,929 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:23:02,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 22:23:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:03,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 3348 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:23:03,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:23:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-25 22:23:03,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:23:03,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419675428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:03,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:23:03,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:23:03,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605712593] [2023-12-25 22:23:03,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:03,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:23:03,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:03,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:23:03,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:23:03,705 INFO L87 Difference]: Start difference. First operand 4222 states and 6812 transitions. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:03,964 INFO L93 Difference]: Finished difference Result 12814 states and 20770 transitions. [2023-12-25 22:23:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:23:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 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 499 [2023-12-25 22:23:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:03,973 INFO L225 Difference]: With dead ends: 12814 [2023-12-25 22:23:03,973 INFO L226 Difference]: Without dead ends: 9112 [2023-12-25 22:23:03,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:23:03,978 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 1623 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:03,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 3655 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:23:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9112 states. [2023-12-25 22:23:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9112 to 4218. [2023-12-25 22:23:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4218 states, 4217 states have (on average 1.6144178325824046) internal successors, (6808), 4217 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 6808 transitions. [2023-12-25 22:23:04,070 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 6808 transitions. Word has length 499 [2023-12-25 22:23:04,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:23:04,070 INFO L495 AbstractCegarLoop]: Abstraction has 4218 states and 6808 transitions. [2023-12-25 22:23:04,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 6808 transitions. [2023-12-25 22:23:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-12-25 22:23:04,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:23:04,075 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:23:04,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 22:23:04,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-25 22:23:04,279 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:23:04,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:23:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1090385601, now seen corresponding path program 1 times [2023-12-25 22:23:04,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:23:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334839766] [2023-12-25 22:23:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:04,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-25 22:23:12,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:12,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334839766] [2023-12-25 22:23:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334839766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:12,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:23:12,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 22:23:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385791625] [2023-12-25 22:23:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 22:23:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 22:23:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:23:12,041 INFO L87 Difference]: Start difference. First operand 4218 states and 6808 transitions. Second operand has 8 states, 8 states have (on average 52.625) internal successors, (421), 8 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:12,302 INFO L93 Difference]: Finished difference Result 10762 states and 17486 transitions. [2023-12-25 22:23:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 22:23:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 52.625) internal successors, (421), 8 states have internal predecessors, (421), 0 states have call successors, (0), 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 499 [2023-12-25 22:23:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:12,308 INFO L225 Difference]: With dead ends: 10762 [2023-12-25 22:23:12,308 INFO L226 Difference]: Without dead ends: 7880 [2023-12-25 22:23:12,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:23:12,312 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 4148 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4148 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:12,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4148 Valid, 2822 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:23:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7880 states. [2023-12-25 22:23:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7880 to 4353. [2023-12-25 22:23:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 1.614889705882353) internal successors, (7028), 4352 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 7028 transitions. [2023-12-25 22:23:12,374 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 7028 transitions. Word has length 499 [2023-12-25 22:23:12,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:23:12,374 INFO L495 AbstractCegarLoop]: Abstraction has 4353 states and 7028 transitions. [2023-12-25 22:23:12,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 52.625) internal successors, (421), 8 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:12,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 7028 transitions. [2023-12-25 22:23:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-12-25 22:23:12,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:23:12,378 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:23:12,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-25 22:23:12,378 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:23:12,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:23:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash 611582727, now seen corresponding path program 1 times [2023-12-25 22:23:12,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:23:12,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647646492] [2023-12-25 22:23:12,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:12,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 161 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:23:17,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:17,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647646492] [2023-12-25 22:23:17,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647646492] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:23:17,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229003151] [2023-12-25 22:23:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:17,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:17,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:23:17,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:23:17,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 22:23:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:17,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 3350 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:23:17,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:23:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-25 22:23:17,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:23:17,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229003151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:17,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:23:17,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:23:17,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619578207] [2023-12-25 22:23:17,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:17,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:23:17,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:23:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:23:17,956 INFO L87 Difference]: Start difference. First operand 4353 states and 7028 transitions. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:18,221 INFO L93 Difference]: Finished difference Result 14112 states and 22875 transitions. [2023-12-25 22:23:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:23:18,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 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 500 [2023-12-25 22:23:18,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:18,230 INFO L225 Difference]: With dead ends: 14112 [2023-12-25 22:23:18,230 INFO L226 Difference]: Without dead ends: 10333 [2023-12-25 22:23:18,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:23:18,235 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 1634 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 4463 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:18,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 4463 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:23:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10333 states. [2023-12-25 22:23:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10333 to 4731. [2023-12-25 22:23:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4731 states, 4730 states have (on average 1.612262156448203) internal successors, (7626), 4730 states have internal predecessors, (7626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4731 states to 4731 states and 7626 transitions. [2023-12-25 22:23:18,311 INFO L78 Accepts]: Start accepts. Automaton has 4731 states and 7626 transitions. Word has length 500 [2023-12-25 22:23:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:23:18,312 INFO L495 AbstractCegarLoop]: Abstraction has 4731 states and 7626 transitions. [2023-12-25 22:23:18,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4731 states and 7626 transitions. [2023-12-25 22:23:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-12-25 22:23:18,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:23:18,316 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:23:18,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 22:23:18,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-25 22:23:18,526 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:23:18,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:23:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 66710153, now seen corresponding path program 1 times [2023-12-25 22:23:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:23:18,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657593675] [2023-12-25 22:23:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 142 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:23:24,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:24,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657593675] [2023-12-25 22:23:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657593675] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:23:24,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607259789] [2023-12-25 22:23:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:24,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:23:24,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:23:24,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 22:23:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:25,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 3351 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:23:25,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:23:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-25 22:23:25,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:23:25,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607259789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:25,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:23:25,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:23:25,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588836798] [2023-12-25 22:23:25,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:25,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:23:25,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:25,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:23:25,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:23:25,203 INFO L87 Difference]: Start difference. First operand 4731 states and 7626 transitions. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:25,449 INFO L93 Difference]: Finished difference Result 14156 states and 22929 transitions. [2023-12-25 22:23:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:23:25,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 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 500 [2023-12-25 22:23:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:25,457 INFO L225 Difference]: With dead ends: 14156 [2023-12-25 22:23:25,457 INFO L226 Difference]: Without dead ends: 10107 [2023-12-25 22:23:25,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:23:25,463 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 1688 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:25,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 3832 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:23:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10107 states. [2023-12-25 22:23:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 4542. [2023-12-25 22:23:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4542 states, 4541 states have (on average 1.6135212508258092) internal successors, (7327), 4541 states have internal predecessors, (7327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 7327 transitions. [2023-12-25 22:23:25,538 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 7327 transitions. Word has length 500 [2023-12-25 22:23:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:23:25,539 INFO L495 AbstractCegarLoop]: Abstraction has 4542 states and 7327 transitions. [2023-12-25 22:23:25,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 7327 transitions. [2023-12-25 22:23:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-12-25 22:23:25,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:23:25,558 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:23:25,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 22:23:25,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:25,759 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:23:25,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:23:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash 538066503, now seen corresponding path program 1 times [2023-12-25 22:23:25,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:23:25,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977852796] [2023-12-25 22:23:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 123 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:23:31,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:31,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977852796] [2023-12-25 22:23:31,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977852796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:23:31,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525928773] [2023-12-25 22:23:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:31,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:31,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:23:31,165 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:23:31,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 22:23:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:31,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-25 22:23:31,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:23:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-25 22:23:31,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:23:31,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525928773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:31,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:23:31,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:23:31,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37188034] [2023-12-25 22:23:31,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:31,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:23:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:31,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:23:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:23:31,877 INFO L87 Difference]: Start difference. First operand 4542 states and 7327 transitions. Second operand has 6 states, 6 states have (on average 60.333333333333336) internal successors, (362), 6 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:32,129 INFO L93 Difference]: Finished difference Result 13423 states and 21746 transitions. [2023-12-25 22:23:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:23:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.333333333333336) internal successors, (362), 6 states have internal predecessors, (362), 0 states have call successors, (0), 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 500 [2023-12-25 22:23:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:32,137 INFO L225 Difference]: With dead ends: 13423 [2023-12-25 22:23:32,137 INFO L226 Difference]: Without dead ends: 9509 [2023-12-25 22:23:32,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:23:32,142 INFO L413 NwaCegarLoop]: 1182 mSDtfsCounter, 1443 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 3746 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:32,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 3746 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:23:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9509 states. [2023-12-25 22:23:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9509 to 4538. [2023-12-25 22:23:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4538 states, 4537 states have (on average 1.6140621556094334) internal successors, (7323), 4537 states have internal predecessors, (7323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 7323 transitions. [2023-12-25 22:23:32,214 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 7323 transitions. Word has length 500 [2023-12-25 22:23:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:23:32,215 INFO L495 AbstractCegarLoop]: Abstraction has 4538 states and 7323 transitions. [2023-12-25 22:23:32,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.333333333333336) internal successors, (362), 6 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 7323 transitions. [2023-12-25 22:23:32,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-12-25 22:23:32,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:23:32,219 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:23:32,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 22:23:32,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-25 22:23:32,429 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:23:32,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:23:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash -345442487, now seen corresponding path program 1 times [2023-12-25 22:23:32,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:23:32,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165431049] [2023-12-25 22:23:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:32,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 22:23:40,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:40,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165431049] [2023-12-25 22:23:40,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165431049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:40,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:23:40,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-25 22:23:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381417807] [2023-12-25 22:23:40,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:40,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 22:23:40,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 22:23:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:23:40,593 INFO L87 Difference]: Start difference. First operand 4538 states and 7323 transitions. Second operand has 13 states, 13 states have (on average 37.61538461538461) internal successors, (489), 13 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:41,248 INFO L93 Difference]: Finished difference Result 23101 states and 37698 transitions. [2023-12-25 22:23:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 22:23:41,248 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.61538461538461) internal successors, (489), 13 states have internal predecessors, (489), 0 states have call successors, (0), 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 500 [2023-12-25 22:23:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:41,266 INFO L225 Difference]: With dead ends: 23101 [2023-12-25 22:23:41,269 INFO L226 Difference]: Without dead ends: 19949 [2023-12-25 22:23:41,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=612, Unknown=0, NotChecked=0, Total=870 [2023-12-25 22:23:41,282 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 6268 mSDsluCounter, 6644 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6268 SdHoareTripleChecker+Valid, 8135 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:41,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6268 Valid, 8135 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 22:23:41,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19949 states. [2023-12-25 22:23:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19949 to 6988. [2023-12-25 22:23:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6988 states, 6987 states have (on average 1.623157292113926) internal successors, (11341), 6987 states have internal predecessors, (11341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 11341 transitions. [2023-12-25 22:23:41,401 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 11341 transitions. Word has length 500 [2023-12-25 22:23:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:23:41,402 INFO L495 AbstractCegarLoop]: Abstraction has 6988 states and 11341 transitions. [2023-12-25 22:23:41,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.61538461538461) internal successors, (489), 13 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 11341 transitions. [2023-12-25 22:23:41,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 22:23:41,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:23:41,407 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:23:41,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-25 22:23:41,407 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:23:41,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:23:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1740017495, now seen corresponding path program 1 times [2023-12-25 22:23:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:23:41,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409897682] [2023-12-25 22:23:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:41,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 162 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:23:46,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:46,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409897682] [2023-12-25 22:23:46,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409897682] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:23:46,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830749495] [2023-12-25 22:23:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:46,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:46,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:23:46,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:23:46,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 22:23:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:46,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 3353 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:23:46,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:23:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-25 22:23:47,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:23:47,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830749495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:47,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:23:47,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:23:47,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012660556] [2023-12-25 22:23:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:47,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:23:47,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:23:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:23:47,149 INFO L87 Difference]: Start difference. First operand 6988 states and 11341 transitions. Second operand has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:47,437 INFO L93 Difference]: Finished difference Result 23330 states and 37959 transitions. [2023-12-25 22:23:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:23:47,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 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 501 [2023-12-25 22:23:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:47,452 INFO L225 Difference]: With dead ends: 23330 [2023-12-25 22:23:47,452 INFO L226 Difference]: Without dead ends: 17024 [2023-12-25 22:23:47,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:23:47,460 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 1701 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 4635 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:47,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 4635 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:23:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17024 states. [2023-12-25 22:23:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17024 to 7555. [2023-12-25 22:23:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7555 states, 7554 states have (on average 1.6200688377018797) internal successors, (12238), 7554 states have internal predecessors, (12238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7555 states to 7555 states and 12238 transitions. [2023-12-25 22:23:47,569 INFO L78 Accepts]: Start accepts. Automaton has 7555 states and 12238 transitions. Word has length 501 [2023-12-25 22:23:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:23:47,570 INFO L495 AbstractCegarLoop]: Abstraction has 7555 states and 12238 transitions. [2023-12-25 22:23:47,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 7555 states and 12238 transitions. [2023-12-25 22:23:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 22:23:47,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:23:47,575 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:23:47,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 22:23:47,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:47,788 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:23:47,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:23:47,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2028836885, now seen corresponding path program 1 times [2023-12-25 22:23:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:23:47,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252933226] [2023-12-25 22:23:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:47,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 105 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:23:52,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252933226] [2023-12-25 22:23:52,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252933226] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:23:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095284418] [2023-12-25 22:23:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:52,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:52,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:23:52,292 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:23:52,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 22:23:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:52,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 3354 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:23:52,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:23:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-25 22:23:53,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:23:53,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095284418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:53,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:23:53,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:23:53,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290058187] [2023-12-25 22:23:53,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:53,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:23:53,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:53,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:23:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:23:53,196 INFO L87 Difference]: Start difference. First operand 7555 states and 12238 transitions. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:53,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:53,491 INFO L93 Difference]: Finished difference Result 23033 states and 37422 transitions. [2023-12-25 22:23:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:23:53,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 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 501 [2023-12-25 22:23:53,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:53,505 INFO L225 Difference]: With dead ends: 23033 [2023-12-25 22:23:53,505 INFO L226 Difference]: Without dead ends: 16322 [2023-12-25 22:23:53,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:23:53,512 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 1500 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 4637 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:53,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 4637 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:23:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16322 states. [2023-12-25 22:23:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16322 to 7366. [2023-12-25 22:23:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7366 states, 7365 states have (on average 1.6210454854039376) internal successors, (11939), 7365 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7366 states to 7366 states and 11939 transitions. [2023-12-25 22:23:53,662 INFO L78 Accepts]: Start accepts. Automaton has 7366 states and 11939 transitions. Word has length 501 [2023-12-25 22:23:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:23:53,663 INFO L495 AbstractCegarLoop]: Abstraction has 7366 states and 11939 transitions. [2023-12-25 22:23:53,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:53,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7366 states and 11939 transitions. [2023-12-25 22:23:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 22:23:53,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:23:53,668 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:23:53,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-25 22:23:53,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:53,878 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:23:53,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:23:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash -538985449, now seen corresponding path program 1 times [2023-12-25 22:23:53,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:23:53,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637420822] [2023-12-25 22:23:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:53,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:23:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 105 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:23:58,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:23:58,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637420822] [2023-12-25 22:23:58,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637420822] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:23:58,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190618268] [2023-12-25 22:23:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:23:58,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:23:58,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:23:58,909 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:23:58,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 22:23:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:23:59,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 3355 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-25 22:23:59,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:23:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-25 22:23:59,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:23:59,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190618268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:23:59,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:23:59,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:23:59,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254451673] [2023-12-25 22:23:59,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:23:59,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:23:59,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:23:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:23:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:23:59,653 INFO L87 Difference]: Start difference. First operand 7366 states and 11939 transitions. Second operand has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:23:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:23:59,936 INFO L93 Difference]: Finished difference Result 21970 states and 35719 transitions. [2023-12-25 22:23:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:23:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 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 501 [2023-12-25 22:23:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:23:59,952 INFO L225 Difference]: With dead ends: 21970 [2023-12-25 22:23:59,952 INFO L226 Difference]: Without dead ends: 15394 [2023-12-25 22:23:59,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:23:59,960 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 1299 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:23:59,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 4639 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:23:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15394 states. [2023-12-25 22:24:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15394 to 7177. [2023-12-25 22:24:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7177 states, 7176 states have (on average 1.6220735785953178) internal successors, (11640), 7176 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7177 states to 7177 states and 11640 transitions. [2023-12-25 22:24:00,076 INFO L78 Accepts]: Start accepts. Automaton has 7177 states and 11640 transitions. Word has length 501 [2023-12-25 22:24:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:24:00,076 INFO L495 AbstractCegarLoop]: Abstraction has 7177 states and 11640 transitions. [2023-12-25 22:24:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 7177 states and 11640 transitions. [2023-12-25 22:24:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 22:24:00,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:24:00,081 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:24:00,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 22:24:00,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-25 22:24:00,291 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:24:00,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:24:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2137006933, now seen corresponding path program 1 times [2023-12-25 22:24:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:24:00,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269183150] [2023-12-25 22:24:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:00,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:24:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 105 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:24:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:24:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269183150] [2023-12-25 22:24:05,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269183150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:24:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351633028] [2023-12-25 22:24:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:05,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:05,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:24:05,010 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:24:05,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 22:24:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:05,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 3356 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:24:05,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:24:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 22:24:05,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:24:05,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351633028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:24:05,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:24:05,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-25 22:24:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058479140] [2023-12-25 22:24:05,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:24:05,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:24:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:24:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:24:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:24:05,844 INFO L87 Difference]: Start difference. First operand 7177 states and 11640 transitions. Second operand has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:24:06,151 INFO L93 Difference]: Finished difference Result 22597 states and 36736 transitions. [2023-12-25 22:24:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 22:24:06,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 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 501 [2023-12-25 22:24:06,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:24:06,164 INFO L225 Difference]: With dead ends: 22597 [2023-12-25 22:24:06,164 INFO L226 Difference]: Without dead ends: 16156 [2023-12-25 22:24:06,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-12-25 22:24:06,171 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 2064 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:24:06,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 4143 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:24:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16156 states. [2023-12-25 22:24:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16156 to 7448. [2023-12-25 22:24:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7448 states, 7447 states have (on average 1.6236068215388748) internal successors, (12091), 7447 states have internal predecessors, (12091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7448 states to 7448 states and 12091 transitions. [2023-12-25 22:24:06,289 INFO L78 Accepts]: Start accepts. Automaton has 7448 states and 12091 transitions. Word has length 501 [2023-12-25 22:24:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:24:06,289 INFO L495 AbstractCegarLoop]: Abstraction has 7448 states and 12091 transitions. [2023-12-25 22:24:06,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 7448 states and 12091 transitions. [2023-12-25 22:24:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 22:24:06,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:24:06,293 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:24:06,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 22:24:06,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:06,504 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:24:06,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:24:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash -423855913, now seen corresponding path program 1 times [2023-12-25 22:24:06,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:24:06,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952352673] [2023-12-25 22:24:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:06,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:24:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 59 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:24:14,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:24:14,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952352673] [2023-12-25 22:24:14,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952352673] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:24:14,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016402030] [2023-12-25 22:24:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:14,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:24:14,649 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:24:14,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 22:24:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:15,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 3357 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-25 22:24:15,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:24:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 22:24:15,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:24:15,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016402030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:24:15,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:24:15,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-25 22:24:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017328744] [2023-12-25 22:24:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:24:15,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:24:15,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:24:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:24:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:24:15,556 INFO L87 Difference]: Start difference. First operand 7448 states and 12091 transitions. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:24:15,776 INFO L93 Difference]: Finished difference Result 19946 states and 32511 transitions. [2023-12-25 22:24:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:24:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 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 501 [2023-12-25 22:24:15,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:24:15,787 INFO L225 Difference]: With dead ends: 19946 [2023-12-25 22:24:15,787 INFO L226 Difference]: Without dead ends: 14352 [2023-12-25 22:24:15,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 502 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-25 22:24:15,792 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 1916 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:24:15,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 2776 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:24:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14352 states. [2023-12-25 22:24:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14352 to 7578. [2023-12-25 22:24:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7578 states, 7577 states have (on average 1.6234657516167348) internal successors, (12301), 7577 states have internal predecessors, (12301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7578 states to 7578 states and 12301 transitions. [2023-12-25 22:24:15,899 INFO L78 Accepts]: Start accepts. Automaton has 7578 states and 12301 transitions. Word has length 501 [2023-12-25 22:24:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:24:15,899 INFO L495 AbstractCegarLoop]: Abstraction has 7578 states and 12301 transitions. [2023-12-25 22:24:15,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7578 states and 12301 transitions. [2023-12-25 22:24:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 22:24:15,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:24:15,903 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:24:15,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 22:24:16,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:16,113 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:24:16,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:24:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash -732333283, now seen corresponding path program 1 times [2023-12-25 22:24:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:24:16,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025502299] [2023-12-25 22:24:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:16,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:24:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 163 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:24:21,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:24:21,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025502299] [2023-12-25 22:24:21,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025502299] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:24:21,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723377293] [2023-12-25 22:24:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:21,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:21,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:24:21,517 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:24:21,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 22:24:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:22,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 3356 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:24:22,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:24:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-25 22:24:22,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:24:22,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723377293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:24:22,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:24:22,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:24:22,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493556875] [2023-12-25 22:24:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:24:22,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:24:22,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:24:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:24:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:24:22,470 INFO L87 Difference]: Start difference. First operand 7578 states and 12301 transitions. Second operand has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:24:22,761 INFO L93 Difference]: Finished difference Result 25613 states and 41664 transitions. [2023-12-25 22:24:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:24:22,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 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 502 [2023-12-25 22:24:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:24:22,778 INFO L225 Difference]: With dead ends: 25613 [2023-12-25 22:24:22,778 INFO L226 Difference]: Without dead ends: 18825 [2023-12-25 22:24:22,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:24:22,786 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 2065 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:24:22,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 4267 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:24:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18825 states. [2023-12-25 22:24:22,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18825 to 8334. [2023-12-25 22:24:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8334 states, 8333 states have (on average 1.6197047881915276) internal successors, (13497), 8333 states have internal predecessors, (13497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 13497 transitions. [2023-12-25 22:24:22,915 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 13497 transitions. Word has length 502 [2023-12-25 22:24:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:24:22,916 INFO L495 AbstractCegarLoop]: Abstraction has 8334 states and 13497 transitions. [2023-12-25 22:24:22,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 13497 transitions. [2023-12-25 22:24:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 22:24:22,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:24:22,920 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:24:22,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 22:24:23,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:23,128 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:24:23,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:24:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash -368866785, now seen corresponding path program 1 times [2023-12-25 22:24:23,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:24:23,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358015958] [2023-12-25 22:24:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:23,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:24:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 106 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:24:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:24:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358015958] [2023-12-25 22:24:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358015958] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:24:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408351020] [2023-12-25 22:24:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:28,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:24:28,115 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:24:28,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 22:24:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:28,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 3357 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:24:28,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:24:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-25 22:24:28,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:24:28,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408351020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:24:28,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:24:28,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:24:28,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346922349] [2023-12-25 22:24:28,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:24:28,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:24:28,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:24:28,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:24:28,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:24:28,989 INFO L87 Difference]: Start difference. First operand 8334 states and 13497 transitions. Second operand has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:24:29,281 INFO L93 Difference]: Finished difference Result 25775 states and 41856 transitions. [2023-12-25 22:24:29,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:24:29,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 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 502 [2023-12-25 22:24:29,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:24:29,297 INFO L225 Difference]: With dead ends: 25775 [2023-12-25 22:24:29,297 INFO L226 Difference]: Without dead ends: 18447 [2023-12-25 22:24:29,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:24:29,305 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 1566 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 4814 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:24:29,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 4814 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:24:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18447 states. [2023-12-25 22:24:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18447 to 8145. [2023-12-25 22:24:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8145 states, 8144 states have (on average 1.6205795677799608) internal successors, (13198), 8144 states have internal predecessors, (13198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8145 states to 8145 states and 13198 transitions. [2023-12-25 22:24:29,449 INFO L78 Accepts]: Start accepts. Automaton has 8145 states and 13198 transitions. Word has length 502 [2023-12-25 22:24:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:24:29,449 INFO L495 AbstractCegarLoop]: Abstraction has 8145 states and 13198 transitions. [2023-12-25 22:24:29,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8145 states and 13198 transitions. [2023-12-25 22:24:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 22:24:29,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:24:29,454 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:24:29,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-25 22:24:29,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-25 22:24:29,660 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:24:29,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:24:29,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1633019485, now seen corresponding path program 1 times [2023-12-25 22:24:29,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:24:29,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817470281] [2023-12-25 22:24:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:29,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:24:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 106 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:24:34,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:24:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817470281] [2023-12-25 22:24:34,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817470281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:24:34,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323628686] [2023-12-25 22:24:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:34,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:24:34,913 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:24:34,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 22:24:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:35,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-25 22:24:35,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:24:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-25 22:24:35,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:24:35,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323628686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:24:35,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:24:35,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 22:24:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102371330] [2023-12-25 22:24:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:24:35,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:24:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:24:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:24:35,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:24:35,738 INFO L87 Difference]: Start difference. First operand 8145 states and 13198 transitions. Second operand has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:24:36,014 INFO L93 Difference]: Finished difference Result 24442 states and 39723 transitions. [2023-12-25 22:24:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:24:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 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 502 [2023-12-25 22:24:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:24:36,030 INFO L225 Difference]: With dead ends: 24442 [2023-12-25 22:24:36,030 INFO L226 Difference]: Without dead ends: 17249 [2023-12-25 22:24:36,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:24:36,038 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 1575 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 4095 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:24:36,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 4095 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:24:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17249 states. [2023-12-25 22:24:36,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17249 to 7956. [2023-12-25 22:24:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7956 states, 7955 states have (on average 1.6214959145191703) internal successors, (12899), 7955 states have internal predecessors, (12899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7956 states to 7956 states and 12899 transitions. [2023-12-25 22:24:36,169 INFO L78 Accepts]: Start accepts. Automaton has 7956 states and 12899 transitions. Word has length 502 [2023-12-25 22:24:36,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:24:36,169 INFO L495 AbstractCegarLoop]: Abstraction has 7956 states and 12899 transitions. [2023-12-25 22:24:36,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 7956 states and 12899 transitions. [2023-12-25 22:24:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 22:24:36,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:24:36,174 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:24:36,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-25 22:24:36,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:36,381 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:24:36,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:24:36,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1310562593, now seen corresponding path program 1 times [2023-12-25 22:24:36,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:24:36,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060875349] [2023-12-25 22:24:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:24:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 106 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:24:40,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:24:40,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060875349] [2023-12-25 22:24:40,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060875349] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:24:40,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366152706] [2023-12-25 22:24:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:40,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:40,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:24:40,903 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:24:40,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 22:24:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:41,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:24:41,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:24:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 22:24:41,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:24:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366152706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:24:41,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:24:41,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-25 22:24:41,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608785508] [2023-12-25 22:24:41,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:24:41,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:24:41,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:24:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:24:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:24:41,804 INFO L87 Difference]: Start difference. First operand 7956 states and 12899 transitions. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:24:42,135 INFO L93 Difference]: Finished difference Result 24209 states and 39320 transitions. [2023-12-25 22:24:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 22:24:42,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 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 502 [2023-12-25 22:24:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:24:42,151 INFO L225 Difference]: With dead ends: 24209 [2023-12-25 22:24:42,155 INFO L226 Difference]: Without dead ends: 17151 [2023-12-25 22:24:42,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-12-25 22:24:42,167 INFO L413 NwaCegarLoop]: 1210 mSDtfsCounter, 2124 mSDsluCounter, 3570 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:24:42,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2124 Valid, 4780 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:24:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17151 states. [2023-12-25 22:24:42,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17151 to 7767. [2023-12-25 22:24:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7767 states, 7766 states have (on average 1.6224568632500644) internal successors, (12600), 7766 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7767 states to 7767 states and 12600 transitions. [2023-12-25 22:24:42,287 INFO L78 Accepts]: Start accepts. Automaton has 7767 states and 12600 transitions. Word has length 502 [2023-12-25 22:24:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:24:42,287 INFO L495 AbstractCegarLoop]: Abstraction has 7767 states and 12600 transitions. [2023-12-25 22:24:42,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 7767 states and 12600 transitions. [2023-12-25 22:24:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 22:24:42,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:24:42,292 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:24:42,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-25 22:24:42,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:42,501 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:24:42,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:24:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash 907067805, now seen corresponding path program 1 times [2023-12-25 22:24:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:24:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553501385] [2023-12-25 22:24:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:24:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 87 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:24:47,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:24:47,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553501385] [2023-12-25 22:24:47,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553501385] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:24:47,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503456445] [2023-12-25 22:24:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:47,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:47,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:24:47,246 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:24:47,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-25 22:24:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:24:47,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 22:24:47,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:24:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 22:24:48,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:24:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503456445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:24:48,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:24:48,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-25 22:24:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158431358] [2023-12-25 22:24:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:24:48,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:24:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:24:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:24:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:24:48,093 INFO L87 Difference]: Start difference. First operand 7767 states and 12600 transitions. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:24:48,425 INFO L93 Difference]: Finished difference Result 23746 states and 38587 transitions. [2023-12-25 22:24:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 22:24:48,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 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 502 [2023-12-25 22:24:48,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:24:48,439 INFO L225 Difference]: With dead ends: 23746 [2023-12-25 22:24:48,440 INFO L226 Difference]: Without dead ends: 16823 [2023-12-25 22:24:48,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-12-25 22:24:48,447 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 1996 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:24:48,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1996 Valid, 4322 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:24:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16823 states. [2023-12-25 22:24:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16823 to 7768. [2023-12-25 22:24:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7768 states, 7767 states have (on average 1.623020471224411) internal successors, (12606), 7767 states have internal predecessors, (12606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7768 states to 7768 states and 12606 transitions. [2023-12-25 22:24:48,580 INFO L78 Accepts]: Start accepts. Automaton has 7768 states and 12606 transitions. Word has length 502 [2023-12-25 22:24:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:24:48,580 INFO L495 AbstractCegarLoop]: Abstraction has 7768 states and 12606 transitions. [2023-12-25 22:24:48,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:24:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7768 states and 12606 transitions. [2023-12-25 22:24:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 22:24:48,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:24:48,585 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:24:48,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-25 22:24:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:24:48,792 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:24:48,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:24:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2126982241, now seen corresponding path program 1 times [2023-12-25 22:24:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:24:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180694159] [2023-12-25 22:24:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:24:48,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:24:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 41 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:00,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:25:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180694159] [2023-12-25 22:25:00,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180694159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:25:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018582027] [2023-12-25 22:25:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:00,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:00,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:25:00,399 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:25:00,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-25 22:25:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:01,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-25 22:25:01,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:25:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 22:25:01,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:25:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018582027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:25:01,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:25:01,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2023-12-25 22:25:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511924317] [2023-12-25 22:25:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:25:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:25:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:25:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:25:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-25 22:25:01,382 INFO L87 Difference]: Start difference. First operand 7768 states and 12606 transitions. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:25:01,609 INFO L93 Difference]: Finished difference Result 21076 states and 34326 transitions. [2023-12-25 22:25:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:25:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 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 502 [2023-12-25 22:25:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:25:01,625 INFO L225 Difference]: With dead ends: 21076 [2023-12-25 22:25:01,625 INFO L226 Difference]: Without dead ends: 15212 [2023-12-25 22:25:01,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 505 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2023-12-25 22:25:01,632 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 1984 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:25:01,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1984 Valid, 2819 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:25:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15212 states. [2023-12-25 22:25:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15212 to 7898. [2023-12-25 22:25:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7898 states, 7897 states have (on average 1.6228947701658858) internal successors, (12816), 7897 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7898 states to 7898 states and 12816 transitions. [2023-12-25 22:25:01,785 INFO L78 Accepts]: Start accepts. Automaton has 7898 states and 12816 transitions. Word has length 502 [2023-12-25 22:25:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:25:01,785 INFO L495 AbstractCegarLoop]: Abstraction has 7898 states and 12816 transitions. [2023-12-25 22:25:01,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states and 12816 transitions. [2023-12-25 22:25:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-25 22:25:01,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:25:01,790 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:25:01,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-25 22:25:02,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:02,001 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:25:02,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:25:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1526624173, now seen corresponding path program 1 times [2023-12-25 22:25:02,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:25:02,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214307744] [2023-12-25 22:25:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:02,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:25:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 164 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:07,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:25:07,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214307744] [2023-12-25 22:25:07,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214307744] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:25:07,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599644825] [2023-12-25 22:25:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:07,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:07,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:25:07,017 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:25:07,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-25 22:25:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:07,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-25 22:25:07,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:25:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 22:25:07,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:25:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599644825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:25:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:25:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 22:25:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036613231] [2023-12-25 22:25:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:25:07,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:25:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:25:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:25:07,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:25:07,736 INFO L87 Difference]: Start difference. First operand 7898 states and 12816 transitions. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:07,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:25:07,931 INFO L93 Difference]: Finished difference Result 20441 states and 33230 transitions. [2023-12-25 22:25:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:25:07,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 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 503 [2023-12-25 22:25:07,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:25:07,944 INFO L225 Difference]: With dead ends: 20441 [2023-12-25 22:25:07,944 INFO L226 Difference]: Without dead ends: 13113 [2023-12-25 22:25:07,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-25 22:25:07,951 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 1621 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:25:07,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 2604 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:25:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13113 states. [2023-12-25 22:25:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 8114. [2023-12-25 22:25:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8114 states, 8113 states have (on average 1.622088006902502) internal successors, (13160), 8113 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8114 states to 8114 states and 13160 transitions. [2023-12-25 22:25:08,068 INFO L78 Accepts]: Start accepts. Automaton has 8114 states and 13160 transitions. Word has length 503 [2023-12-25 22:25:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:25:08,069 INFO L495 AbstractCegarLoop]: Abstraction has 8114 states and 13160 transitions. [2023-12-25 22:25:08,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8114 states and 13160 transitions. [2023-12-25 22:25:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-25 22:25:08,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:25:08,073 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:25:08,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-25 22:25:08,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-12-25 22:25:08,284 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:25:08,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:25:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash -90816277, now seen corresponding path program 1 times [2023-12-25 22:25:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:25:08,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143888050] [2023-12-25 22:25:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:25:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 107 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:13,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:25:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143888050] [2023-12-25 22:25:13,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143888050] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:25:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419037495] [2023-12-25 22:25:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:13,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:13,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:25:13,222 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:25:13,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-25 22:25:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:13,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-25 22:25:13,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:25:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-25 22:25:13,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:25:13,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419037495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:25:13,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:25:13,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 22:25:13,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310716316] [2023-12-25 22:25:13,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:25:13,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:25:13,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:25:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:25:13,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:25:13,939 INFO L87 Difference]: Start difference. First operand 8114 states and 13160 transitions. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:25:14,134 INFO L93 Difference]: Finished difference Result 21403 states and 34820 transitions. [2023-12-25 22:25:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:25:14,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 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 503 [2023-12-25 22:25:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:25:14,146 INFO L225 Difference]: With dead ends: 21403 [2023-12-25 22:25:14,146 INFO L226 Difference]: Without dead ends: 13859 [2023-12-25 22:25:14,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-25 22:25:14,154 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1497 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:25:14,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 2780 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:25:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13859 states. [2023-12-25 22:25:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13859 to 8330. [2023-12-25 22:25:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8330 states, 8329 states have (on average 1.621323088005763) internal successors, (13504), 8329 states have internal predecessors, (13504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 13504 transitions. [2023-12-25 22:25:14,268 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 13504 transitions. Word has length 503 [2023-12-25 22:25:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:25:14,268 INFO L495 AbstractCegarLoop]: Abstraction has 8330 states and 13504 transitions. [2023-12-25 22:25:14,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 13504 transitions. [2023-12-25 22:25:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-25 22:25:14,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:25:14,273 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:25:14,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-25 22:25:14,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-12-25 22:25:14,484 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:25:14,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:25:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1838115949, now seen corresponding path program 1 times [2023-12-25 22:25:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:25:14,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710505664] [2023-12-25 22:25:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:25:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 107 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:19,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:25:19,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710505664] [2023-12-25 22:25:19,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710505664] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:25:19,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498697625] [2023-12-25 22:25:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:19,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:19,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:25:19,374 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:25:19,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-25 22:25:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:19,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-25 22:25:19,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:25:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-25 22:25:20,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:25:20,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498697625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:25:20,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:25:20,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 22:25:20,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595003351] [2023-12-25 22:25:20,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:25:20,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:25:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:25:20,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:25:20,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:25:20,082 INFO L87 Difference]: Start difference. First operand 8330 states and 13504 transitions. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:20,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:25:20,280 INFO L93 Difference]: Finished difference Result 21985 states and 35740 transitions. [2023-12-25 22:25:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:25:20,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 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 503 [2023-12-25 22:25:20,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:25:20,292 INFO L225 Difference]: With dead ends: 21985 [2023-12-25 22:25:20,292 INFO L226 Difference]: Without dead ends: 14225 [2023-12-25 22:25:20,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-25 22:25:20,299 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 1363 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:25:20,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 2952 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:25:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14225 states. [2023-12-25 22:25:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14225 to 8411. [2023-12-25 22:25:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8411 states, 8410 states have (on average 1.619857312722949) internal successors, (13623), 8410 states have internal predecessors, (13623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8411 states to 8411 states and 13623 transitions. [2023-12-25 22:25:20,445 INFO L78 Accepts]: Start accepts. Automaton has 8411 states and 13623 transitions. Word has length 503 [2023-12-25 22:25:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:25:20,445 INFO L495 AbstractCegarLoop]: Abstraction has 8411 states and 13623 transitions. [2023-12-25 22:25:20,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8411 states and 13623 transitions. [2023-12-25 22:25:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-25 22:25:20,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:25:20,449 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:25:20,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-25 22:25:20,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-12-25 22:25:20,660 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:25:20,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:25:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 781384747, now seen corresponding path program 1 times [2023-12-25 22:25:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:25:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836499208] [2023-12-25 22:25:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:20,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:25:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 107 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:26,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:25:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836499208] [2023-12-25 22:25:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836499208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:25:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894898818] [2023-12-25 22:25:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:26,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:26,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:25:26,233 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:25:26,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-25 22:25:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:26,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-25 22:25:26,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:25:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-25 22:25:26,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:25:26,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894898818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:25:26,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:25:26,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 22:25:26,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437375529] [2023-12-25 22:25:26,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:25:26,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:25:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:25:26,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:25:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:25:26,957 INFO L87 Difference]: Start difference. First operand 8411 states and 13623 transitions. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:25:27,159 INFO L93 Difference]: Finished difference Result 22942 states and 37265 transitions. [2023-12-25 22:25:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:25:27,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 503 [2023-12-25 22:25:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:25:27,171 INFO L225 Difference]: With dead ends: 22942 [2023-12-25 22:25:27,172 INFO L226 Difference]: Without dead ends: 15101 [2023-12-25 22:25:27,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-25 22:25:27,179 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 1229 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 3124 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:25:27,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 3124 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:25:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15101 states. [2023-12-25 22:25:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15101 to 8622. [2023-12-25 22:25:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8622 states, 8621 states have (on average 1.6195336967869156) internal successors, (13962), 8621 states have internal predecessors, (13962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8622 states to 8622 states and 13962 transitions. [2023-12-25 22:25:27,302 INFO L78 Accepts]: Start accepts. Automaton has 8622 states and 13962 transitions. Word has length 503 [2023-12-25 22:25:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:25:27,302 INFO L495 AbstractCegarLoop]: Abstraction has 8622 states and 13962 transitions. [2023-12-25 22:25:27,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:27,302 INFO L276 IsEmpty]: Start isEmpty. Operand 8622 states and 13962 transitions. [2023-12-25 22:25:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-25 22:25:27,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:25:27,307 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:25:27,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-25 22:25:27,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:27,518 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:25:27,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:25:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash 808450349, now seen corresponding path program 1 times [2023-12-25 22:25:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:25:27,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513841688] [2023-12-25 22:25:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:25:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 88 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:32,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:25:32,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513841688] [2023-12-25 22:25:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513841688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:25:32,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642232708] [2023-12-25 22:25:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:32,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:32,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:25:32,171 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:25:32,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-25 22:25:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:32,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-25 22:25:32,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:25:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-25 22:25:32,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:25:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642232708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:25:32,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:25:32,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 22:25:32,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842570324] [2023-12-25 22:25:32,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:25:32,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:25:32,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:25:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:25:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:25:32,861 INFO L87 Difference]: Start difference. First operand 8622 states and 13962 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:25:33,057 INFO L93 Difference]: Finished difference Result 23909 states and 38825 transitions. [2023-12-25 22:25:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:25:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 503 [2023-12-25 22:25:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:25:33,071 INFO L225 Difference]: With dead ends: 23909 [2023-12-25 22:25:33,071 INFO L226 Difference]: Without dead ends: 15857 [2023-12-25 22:25:33,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-25 22:25:33,080 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 1094 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:25:33,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 3297 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:25:33,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15857 states. [2023-12-25 22:25:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15857 to 8838. [2023-12-25 22:25:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8838 states, 8837 states have (on average 1.6194409867602126) internal successors, (14311), 8837 states have internal predecessors, (14311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8838 states to 8838 states and 14311 transitions. [2023-12-25 22:25:33,201 INFO L78 Accepts]: Start accepts. Automaton has 8838 states and 14311 transitions. Word has length 503 [2023-12-25 22:25:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:25:33,201 INFO L495 AbstractCegarLoop]: Abstraction has 8838 states and 14311 transitions. [2023-12-25 22:25:33,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8838 states and 14311 transitions. [2023-12-25 22:25:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-25 22:25:33,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:25:33,206 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:25:33,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-25 22:25:33,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-25 22:25:33,417 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:25:33,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:25:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1242179435, now seen corresponding path program 1 times [2023-12-25 22:25:33,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:25:33,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508905637] [2023-12-25 22:25:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:33,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:25:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 69 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:39,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:25:39,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508905637] [2023-12-25 22:25:39,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508905637] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:25:39,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876774217] [2023-12-25 22:25:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:39,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:25:39,256 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:25:39,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-25 22:25:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:39,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-25 22:25:39,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:25:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-25 22:25:39,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:25:39,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876774217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:25:39,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:25:39,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 22:25:39,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412448021] [2023-12-25 22:25:39,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:25:39,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:25:39,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:25:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:25:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:25:39,975 INFO L87 Difference]: Start difference. First operand 8838 states and 14311 transitions. Second operand has 5 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:25:40,173 INFO L93 Difference]: Finished difference Result 24541 states and 39840 transitions. [2023-12-25 22:25:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:25:40,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 503 [2023-12-25 22:25:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:25:40,186 INFO L225 Difference]: With dead ends: 24541 [2023-12-25 22:25:40,186 INFO L226 Difference]: Without dead ends: 16273 [2023-12-25 22:25:40,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-25 22:25:40,194 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 960 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:25:40,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 3469 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:25:40,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16273 states. [2023-12-25 22:25:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16273 to 8969. [2023-12-25 22:25:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8969 states, 8968 states have (on average 1.6196476360392507) internal successors, (14525), 8968 states have internal predecessors, (14525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8969 states to 8969 states and 14525 transitions. [2023-12-25 22:25:40,318 INFO L78 Accepts]: Start accepts. Automaton has 8969 states and 14525 transitions. Word has length 503 [2023-12-25 22:25:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:25:40,318 INFO L495 AbstractCegarLoop]: Abstraction has 8969 states and 14525 transitions. [2023-12-25 22:25:40,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:25:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8969 states and 14525 transitions. [2023-12-25 22:25:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-25 22:25:40,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:25:40,322 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:25:40,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-25 22:25:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-25 22:25:40,534 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:25:40,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:25:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -603187731, now seen corresponding path program 1 times [2023-12-25 22:25:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:25:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441667281] [2023-12-25 22:25:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:25:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 8 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:49,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:25:49,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441667281] [2023-12-25 22:25:49,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441667281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:25:49,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973633209] [2023-12-25 22:25:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:25:49,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:25:49,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:25:49,465 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:25:49,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-25 22:25:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:25:50,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 3365 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-25 22:25:50,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:25:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 8 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:53,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:25:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 8 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:25:55,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973633209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:25:55,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:25:55,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24, 18] total 53 [2023-12-25 22:25:55,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478085639] [2023-12-25 22:25:55,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:25:55,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-25 22:25:55,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:25:55,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-25 22:25:55,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2502, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 22:25:55,566 INFO L87 Difference]: Start difference. First operand 8969 states and 14525 transitions. Second operand has 54 states, 54 states have (on average 27.77777777777778) internal successors, (1500), 53 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:05,593 INFO L93 Difference]: Finished difference Result 173015 states and 280895 transitions. [2023-12-25 22:26:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-12-25 22:26:05,593 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 27.77777777777778) internal successors, (1500), 53 states have internal predecessors, (1500), 0 states have call successors, (0), 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 503 [2023-12-25 22:26:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:05,729 INFO L225 Difference]: With dead ends: 173015 [2023-12-25 22:26:05,729 INFO L226 Difference]: Without dead ends: 164134 [2023-12-25 22:26:05,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1206 GetRequests, 966 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23593 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=8150, Invalid=50172, Unknown=0, NotChecked=0, Total=58322 [2023-12-25 22:26:05,742 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 94198 mSDsluCounter, 34830 mSDsCounter, 0 mSdLazyCounter, 5144 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94198 SdHoareTripleChecker+Valid, 35788 SdHoareTripleChecker+Invalid, 5289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 5144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:05,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94198 Valid, 35788 Invalid, 5289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [145 Valid, 5144 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 22:26:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164134 states. [2023-12-25 22:26:06,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164134 to 34001. [2023-12-25 22:26:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34001 states, 34000 states have (on average 1.62) internal successors, (55080), 34000 states have internal predecessors, (55080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34001 states to 34001 states and 55080 transitions. [2023-12-25 22:26:06,791 INFO L78 Accepts]: Start accepts. Automaton has 34001 states and 55080 transitions. Word has length 503 [2023-12-25 22:26:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:06,791 INFO L495 AbstractCegarLoop]: Abstraction has 34001 states and 55080 transitions. [2023-12-25 22:26:06,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 27.77777777777778) internal successors, (1500), 53 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 34001 states and 55080 transitions. [2023-12-25 22:26:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-25 22:26:06,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:06,800 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:06,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-25 22:26:07,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:26:07,015 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:07,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash 664482043, now seen corresponding path program 1 times [2023-12-25 22:26:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:07,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870803417] [2023-12-25 22:26:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:07,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-25 22:26:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870803417] [2023-12-25 22:26:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870803417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:08,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:26:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62316567] [2023-12-25 22:26:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:08,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:26:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:08,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:26:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:26:08,072 INFO L87 Difference]: Start difference. First operand 34001 states and 55080 transitions. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:08,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:08,521 INFO L93 Difference]: Finished difference Result 99853 states and 161712 transitions. [2023-12-25 22:26:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:26:08,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 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 505 [2023-12-25 22:26:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:08,587 INFO L225 Difference]: With dead ends: 99853 [2023-12-25 22:26:08,587 INFO L226 Difference]: Without dead ends: 66987 [2023-12-25 22:26:08,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:26:08,614 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 547 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:08,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1954 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:26:08,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66987 states. [2023-12-25 22:26:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66987 to 34237. [2023-12-25 22:26:09,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34237 states, 34236 states have (on average 1.6157261362308681) internal successors, (55316), 34236 states have internal predecessors, (55316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34237 states to 34237 states and 55316 transitions. [2023-12-25 22:26:09,244 INFO L78 Accepts]: Start accepts. Automaton has 34237 states and 55316 transitions. Word has length 505 [2023-12-25 22:26:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:09,244 INFO L495 AbstractCegarLoop]: Abstraction has 34237 states and 55316 transitions. [2023-12-25 22:26:09,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:09,245 INFO L276 IsEmpty]: Start isEmpty. Operand 34237 states and 55316 transitions. [2023-12-25 22:26:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-25 22:26:09,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:09,254 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:09,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-25 22:26:09,255 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:09,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash -184270817, now seen corresponding path program 1 times [2023-12-25 22:26:09,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:09,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682060061] [2023-12-25 22:26:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:09,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 22:26:10,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682060061] [2023-12-25 22:26:10,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682060061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:10,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:10,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:26:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892264886] [2023-12-25 22:26:10,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:26:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:26:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:26:10,379 INFO L87 Difference]: Start difference. First operand 34237 states and 55316 transitions. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:11,053 INFO L93 Difference]: Finished difference Result 100415 states and 162280 transitions. [2023-12-25 22:26:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:26:11,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 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 505 [2023-12-25 22:26:11,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:11,121 INFO L225 Difference]: With dead ends: 100415 [2023-12-25 22:26:11,121 INFO L226 Difference]: Without dead ends: 67370 [2023-12-25 22:26:11,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:26:11,148 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 938 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:11,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 3696 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 22:26:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67370 states. [2023-12-25 22:26:11,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67370 to 34301. [2023-12-25 22:26:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34301 states, 34300 states have (on average 1.6145772594752186) internal successors, (55380), 34300 states have internal predecessors, (55380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34301 states to 34301 states and 55380 transitions. [2023-12-25 22:26:11,863 INFO L78 Accepts]: Start accepts. Automaton has 34301 states and 55380 transitions. Word has length 505 [2023-12-25 22:26:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:11,863 INFO L495 AbstractCegarLoop]: Abstraction has 34301 states and 55380 transitions. [2023-12-25 22:26:11,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 34301 states and 55380 transitions. [2023-12-25 22:26:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-25 22:26:11,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:11,875 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:11,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-25 22:26:11,875 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:11,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1873214559, now seen corresponding path program 1 times [2023-12-25 22:26:11,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:11,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603705895] [2023-12-25 22:26:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:11,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-25 22:26:17,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:17,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603705895] [2023-12-25 22:26:17,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603705895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:17,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:17,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:26:17,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793550611] [2023-12-25 22:26:17,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:17,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:26:17,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:17,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:26:17,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:26:17,647 INFO L87 Difference]: Start difference. First operand 34301 states and 55380 transitions. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:18,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:18,322 INFO L93 Difference]: Finished difference Result 100739 states and 162684 transitions. [2023-12-25 22:26:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:26:18,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 505 [2023-12-25 22:26:18,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:18,395 INFO L225 Difference]: With dead ends: 100739 [2023-12-25 22:26:18,396 INFO L226 Difference]: Without dead ends: 67570 [2023-12-25 22:26:18,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:26:18,430 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 995 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 4509 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:18,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 4509 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 22:26:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67570 states. [2023-12-25 22:26:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67570 to 34421. [2023-12-25 22:26:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34421 states, 34420 states have (on average 1.6131319000581057) internal successors, (55524), 34420 states have internal predecessors, (55524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34421 states to 34421 states and 55524 transitions. [2023-12-25 22:26:19,146 INFO L78 Accepts]: Start accepts. Automaton has 34421 states and 55524 transitions. Word has length 505 [2023-12-25 22:26:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:19,146 INFO L495 AbstractCegarLoop]: Abstraction has 34421 states and 55524 transitions. [2023-12-25 22:26:19,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 34421 states and 55524 transitions. [2023-12-25 22:26:19,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-25 22:26:19,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:19,156 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:19,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-25 22:26:19,156 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:19,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1578988015, now seen corresponding path program 1 times [2023-12-25 22:26:19,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:19,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257898579] [2023-12-25 22:26:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:19,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-25 22:26:20,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:20,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257898579] [2023-12-25 22:26:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257898579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:20,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:20,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:26:20,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708819697] [2023-12-25 22:26:20,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:20,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:26:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:26:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:26:20,283 INFO L87 Difference]: Start difference. First operand 34421 states and 55524 transitions. Second operand has 5 states, 5 states have (on average 98.0) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:20,687 INFO L93 Difference]: Finished difference Result 72478 states and 116902 transitions. [2023-12-25 22:26:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:26:20,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 98.0) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 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 506 [2023-12-25 22:26:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:20,726 INFO L225 Difference]: With dead ends: 72478 [2023-12-25 22:26:20,726 INFO L226 Difference]: Without dead ends: 39193 [2023-12-25 22:26:20,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:26:20,747 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 2389 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:20,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 2254 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:26:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39193 states. [2023-12-25 22:26:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39193 to 34405. [2023-12-25 22:26:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34405 states, 34404 states have (on average 1.6129519823276364) internal successors, (55492), 34404 states have internal predecessors, (55492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34405 states to 34405 states and 55492 transitions. [2023-12-25 22:26:21,399 INFO L78 Accepts]: Start accepts. Automaton has 34405 states and 55492 transitions. Word has length 506 [2023-12-25 22:26:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:21,400 INFO L495 AbstractCegarLoop]: Abstraction has 34405 states and 55492 transitions. [2023-12-25 22:26:21,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.0) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 34405 states and 55492 transitions. [2023-12-25 22:26:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-25 22:26:21,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:21,412 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:21,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-25 22:26:21,412 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:21,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1198266423, now seen corresponding path program 1 times [2023-12-25 22:26:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:21,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378919486] [2023-12-25 22:26:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:21,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-25 22:26:27,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378919486] [2023-12-25 22:26:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378919486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:27,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 22:26:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725397104] [2023-12-25 22:26:27,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:27,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 22:26:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:27,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 22:26:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:26:27,254 INFO L87 Difference]: Start difference. First operand 34405 states and 55492 transitions. Second operand has 10 states, 10 states have (on average 49.3) internal successors, (493), 9 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:28,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:28,323 INFO L93 Difference]: Finished difference Result 135472 states and 218348 transitions. [2023-12-25 22:26:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 22:26:28,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 49.3) internal successors, (493), 9 states have internal predecessors, (493), 0 states have call successors, (0), 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 506 [2023-12-25 22:26:28,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:28,428 INFO L225 Difference]: With dead ends: 135472 [2023-12-25 22:26:28,428 INFO L226 Difference]: Without dead ends: 102091 [2023-12-25 22:26:28,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2023-12-25 22:26:28,463 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 2888 mSDsluCounter, 6432 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 7417 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:28,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2888 Valid, 7417 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 22:26:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102091 states. [2023-12-25 22:26:29,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102091 to 35477. [2023-12-25 22:26:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35477 states, 35476 states have (on average 1.6077348066298343) internal successors, (57036), 35476 states have internal predecessors, (57036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35477 states to 35477 states and 57036 transitions. [2023-12-25 22:26:29,186 INFO L78 Accepts]: Start accepts. Automaton has 35477 states and 57036 transitions. Word has length 506 [2023-12-25 22:26:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:29,186 INFO L495 AbstractCegarLoop]: Abstraction has 35477 states and 57036 transitions. [2023-12-25 22:26:29,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.3) internal successors, (493), 9 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 35477 states and 57036 transitions. [2023-12-25 22:26:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 22:26:29,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:29,197 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:29,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-25 22:26:29,197 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:29,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1262638373, now seen corresponding path program 1 times [2023-12-25 22:26:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:29,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782141600] [2023-12-25 22:26:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-25 22:26:32,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782141600] [2023-12-25 22:26:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782141600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:32,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:32,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:26:32,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114682243] [2023-12-25 22:26:32,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:32,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:26:32,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:32,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:26:32,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:26:32,875 INFO L87 Difference]: Start difference. First operand 35477 states and 57036 transitions. Second operand has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:33,653 INFO L93 Difference]: Finished difference Result 145924 states and 234282 transitions. [2023-12-25 22:26:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 22:26:33,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 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 507 [2023-12-25 22:26:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:33,759 INFO L225 Difference]: With dead ends: 145924 [2023-12-25 22:26:33,759 INFO L226 Difference]: Without dead ends: 111363 [2023-12-25 22:26:33,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:26:33,795 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 2264 mSDsluCounter, 4714 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 5743 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:33,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 5743 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:26:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111363 states. [2023-12-25 22:26:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111363 to 38201. [2023-12-25 22:26:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38201 states, 38200 states have (on average 1.6) internal successors, (61120), 38200 states have internal predecessors, (61120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38201 states to 38201 states and 61120 transitions. [2023-12-25 22:26:34,617 INFO L78 Accepts]: Start accepts. Automaton has 38201 states and 61120 transitions. Word has length 507 [2023-12-25 22:26:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:34,618 INFO L495 AbstractCegarLoop]: Abstraction has 38201 states and 61120 transitions. [2023-12-25 22:26:34,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 38201 states and 61120 transitions. [2023-12-25 22:26:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 22:26:34,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:34,629 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:34,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-25 22:26:34,629 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:34,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1898797567, now seen corresponding path program 1 times [2023-12-25 22:26:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348650698] [2023-12-25 22:26:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-25 22:26:35,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:35,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348650698] [2023-12-25 22:26:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348650698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:35,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:35,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:26:35,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333832962] [2023-12-25 22:26:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:35,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:26:35,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:26:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:26:35,791 INFO L87 Difference]: Start difference. First operand 38201 states and 61120 transitions. Second operand has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:36,303 INFO L93 Difference]: Finished difference Result 112007 states and 179100 transitions. [2023-12-25 22:26:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:26:36,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 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 507 [2023-12-25 22:26:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:36,370 INFO L225 Difference]: With dead ends: 112007 [2023-12-25 22:26:36,370 INFO L226 Difference]: Without dead ends: 75038 [2023-12-25 22:26:36,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:26:36,398 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 546 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:36,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 2682 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:26:36,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75038 states. [2023-12-25 22:26:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75038 to 38537. [2023-12-25 22:26:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38537 states, 38536 states have (on average 1.5947685281295412) internal successors, (61456), 38536 states have internal predecessors, (61456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38537 states to 38537 states and 61456 transitions. [2023-12-25 22:26:37,126 INFO L78 Accepts]: Start accepts. Automaton has 38537 states and 61456 transitions. Word has length 507 [2023-12-25 22:26:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:37,127 INFO L495 AbstractCegarLoop]: Abstraction has 38537 states and 61456 transitions. [2023-12-25 22:26:37,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 38537 states and 61456 transitions. [2023-12-25 22:26:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-12-25 22:26:37,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:37,138 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:37,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-25 22:26:37,138 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:37,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash -268297757, now seen corresponding path program 1 times [2023-12-25 22:26:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:37,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52955851] [2023-12-25 22:26:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-25 22:26:38,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52955851] [2023-12-25 22:26:38,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52955851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:38,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:38,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:26:38,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897325036] [2023-12-25 22:26:38,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:38,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:26:38,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:26:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:26:38,199 INFO L87 Difference]: Start difference. First operand 38537 states and 61456 transitions. Second operand has 5 states, 5 states have (on average 94.6) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:38,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:38,575 INFO L93 Difference]: Finished difference Result 80748 states and 128798 transitions. [2023-12-25 22:26:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:26:38,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 94.6) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 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 508 [2023-12-25 22:26:38,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:38,614 INFO L225 Difference]: With dead ends: 80748 [2023-12-25 22:26:38,615 INFO L226 Difference]: Without dead ends: 43315 [2023-12-25 22:26:38,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:26:38,640 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 2339 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:38,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 2207 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:26:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43315 states. [2023-12-25 22:26:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43315 to 38485. [2023-12-25 22:26:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38485 states, 38484 states have (on average 1.594532792848976) internal successors, (61364), 38484 states have internal predecessors, (61364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38485 states to 38485 states and 61364 transitions. [2023-12-25 22:26:39,279 INFO L78 Accepts]: Start accepts. Automaton has 38485 states and 61364 transitions. Word has length 508 [2023-12-25 22:26:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:39,279 INFO L495 AbstractCegarLoop]: Abstraction has 38485 states and 61364 transitions. [2023-12-25 22:26:39,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.6) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 38485 states and 61364 transitions. [2023-12-25 22:26:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-12-25 22:26:39,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:39,290 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:39,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-25 22:26:39,290 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:39,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:39,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1307112637, now seen corresponding path program 1 times [2023-12-25 22:26:39,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:39,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045691450] [2023-12-25 22:26:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-25 22:26:43,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:43,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045691450] [2023-12-25 22:26:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045691450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:43,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:43,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:26:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122697141] [2023-12-25 22:26:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:43,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:26:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:26:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:26:43,286 INFO L87 Difference]: Start difference. First operand 38485 states and 61364 transitions. Second operand has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:44,350 INFO L93 Difference]: Finished difference Result 160000 states and 254730 transitions. [2023-12-25 22:26:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 22:26:44,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 0 states have call successors, (0), 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 508 [2023-12-25 22:26:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:44,477 INFO L225 Difference]: With dead ends: 160000 [2023-12-25 22:26:44,477 INFO L226 Difference]: Without dead ends: 122323 [2023-12-25 22:26:44,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:26:44,492 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 2264 mSDsluCounter, 4542 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:44,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 5528 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:26:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122323 states. [2023-12-25 22:26:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122323 to 41889. [2023-12-25 22:26:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41889 states, 41888 states have (on average 1.5863254392666157) internal successors, (66448), 41888 states have internal predecessors, (66448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41889 states to 41889 states and 66448 transitions. [2023-12-25 22:26:45,534 INFO L78 Accepts]: Start accepts. Automaton has 41889 states and 66448 transitions. Word has length 508 [2023-12-25 22:26:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:45,534 INFO L495 AbstractCegarLoop]: Abstraction has 41889 states and 66448 transitions. [2023-12-25 22:26:45,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 41889 states and 66448 transitions. [2023-12-25 22:26:45,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-12-25 22:26:45,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:45,548 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:45,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-25 22:26:45,548 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:45,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1852508311, now seen corresponding path program 1 times [2023-12-25 22:26:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884004515] [2023-12-25 22:26:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-25 22:26:46,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884004515] [2023-12-25 22:26:46,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884004515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:46,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:46,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:26:46,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485718542] [2023-12-25 22:26:46,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:46,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:26:46,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:46,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:26:46,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:26:46,717 INFO L87 Difference]: Start difference. First operand 41889 states and 66448 transitions. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:47,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:47,236 INFO L93 Difference]: Finished difference Result 123231 states and 195300 transitions. [2023-12-25 22:26:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:26:47,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 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 508 [2023-12-25 22:26:47,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:47,315 INFO L225 Difference]: With dead ends: 123231 [2023-12-25 22:26:47,316 INFO L226 Difference]: Without dead ends: 82462 [2023-12-25 22:26:47,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:26:47,353 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 546 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 3596 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:47,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 3596 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:26:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82462 states. [2023-12-25 22:26:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82462 to 42305. [2023-12-25 22:26:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42305 states, 42304 states have (on average 1.5805597579425112) internal successors, (66864), 42304 states have internal predecessors, (66864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42305 states to 42305 states and 66864 transitions. [2023-12-25 22:26:48,083 INFO L78 Accepts]: Start accepts. Automaton has 42305 states and 66864 transitions. Word has length 508 [2023-12-25 22:26:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:48,083 INFO L495 AbstractCegarLoop]: Abstraction has 42305 states and 66864 transitions. [2023-12-25 22:26:48,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 42305 states and 66864 transitions. [2023-12-25 22:26:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 22:26:48,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:48,097 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:48,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-25 22:26:48,097 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:48,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:48,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1315116725, now seen corresponding path program 1 times [2023-12-25 22:26:48,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:48,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306897978] [2023-12-25 22:26:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:48,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-25 22:26:49,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:49,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306897978] [2023-12-25 22:26:49,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306897978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:49,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:49,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:26:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397121522] [2023-12-25 22:26:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:49,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:26:49,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:26:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:26:49,338 INFO L87 Difference]: Start difference. First operand 42305 states and 66864 transitions. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:49,861 INFO L93 Difference]: Finished difference Result 124003 states and 195732 transitions. [2023-12-25 22:26:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:26:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 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 509 [2023-12-25 22:26:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:49,935 INFO L225 Difference]: With dead ends: 124003 [2023-12-25 22:26:49,935 INFO L226 Difference]: Without dead ends: 82694 [2023-12-25 22:26:49,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:26:49,968 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 543 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:49,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 3116 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:26:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82694 states. [2023-12-25 22:26:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82694 to 42721. [2023-12-25 22:26:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42721 states, 42720 states have (on average 1.5749063670411985) internal successors, (67280), 42720 states have internal predecessors, (67280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42721 states to 42721 states and 67280 transitions. [2023-12-25 22:26:50,722 INFO L78 Accepts]: Start accepts. Automaton has 42721 states and 67280 transitions. Word has length 509 [2023-12-25 22:26:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:50,723 INFO L495 AbstractCegarLoop]: Abstraction has 42721 states and 67280 transitions. [2023-12-25 22:26:50,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 42721 states and 67280 transitions. [2023-12-25 22:26:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 22:26:50,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:50,736 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:50,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-25 22:26:50,736 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:50,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:50,736 INFO L85 PathProgramCache]: Analyzing trace with hash -151939051, now seen corresponding path program 1 times [2023-12-25 22:26:50,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:50,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461377158] [2023-12-25 22:26:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:50,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-25 22:26:54,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:54,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461377158] [2023-12-25 22:26:54,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461377158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:54,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:54,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:26:54,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461961393] [2023-12-25 22:26:54,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:26:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:26:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:26:54,282 INFO L87 Difference]: Start difference. First operand 42721 states and 67280 transitions. Second operand has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:55,114 INFO L93 Difference]: Finished difference Result 179848 states and 283090 transitions. [2023-12-25 22:26:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 22:26:55,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 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 509 [2023-12-25 22:26:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:55,244 INFO L225 Difference]: With dead ends: 179848 [2023-12-25 22:26:55,245 INFO L226 Difference]: Without dead ends: 137827 [2023-12-25 22:26:55,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:26:55,287 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 2224 mSDsluCounter, 4860 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 5806 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:55,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2224 Valid, 5806 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:26:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137827 states. [2023-12-25 22:26:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137827 to 47065. [2023-12-25 22:26:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47065 states, 47064 states have (on average 1.56901240863505) internal successors, (73844), 47064 states have internal predecessors, (73844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47065 states to 47065 states and 73844 transitions. [2023-12-25 22:26:56,302 INFO L78 Accepts]: Start accepts. Automaton has 47065 states and 73844 transitions. Word has length 509 [2023-12-25 22:26:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:56,302 INFO L495 AbstractCegarLoop]: Abstraction has 47065 states and 73844 transitions. [2023-12-25 22:26:56,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 47065 states and 73844 transitions. [2023-12-25 22:26:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 22:26:56,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:56,315 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:56,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-25 22:26:56,316 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:56,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash 385217851, now seen corresponding path program 1 times [2023-12-25 22:26:56,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:56,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676874240] [2023-12-25 22:26:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:26:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-25 22:26:57,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:26:57,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676874240] [2023-12-25 22:26:57,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676874240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:26:57,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:26:57,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:26:57,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73923214] [2023-12-25 22:26:57,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:26:57,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:26:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:26:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:26:57,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:26:57,441 INFO L87 Difference]: Start difference. First operand 47065 states and 73844 transitions. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:26:58,023 INFO L93 Difference]: Finished difference Result 138823 states and 217504 transitions. [2023-12-25 22:26:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:26:58,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 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 509 [2023-12-25 22:26:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:26:58,110 INFO L225 Difference]: With dead ends: 138823 [2023-12-25 22:26:58,110 INFO L226 Difference]: Without dead ends: 92802 [2023-12-25 22:26:58,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:26:58,148 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 546 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:26:58,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 3443 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:26:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92802 states. [2023-12-25 22:26:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92802 to 47641. [2023-12-25 22:26:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47641 states, 47640 states have (on average 1.5621326616288833) internal successors, (74420), 47640 states have internal predecessors, (74420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47641 states to 47641 states and 74420 transitions. [2023-12-25 22:26:59,075 INFO L78 Accepts]: Start accepts. Automaton has 47641 states and 74420 transitions. Word has length 509 [2023-12-25 22:26:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:26:59,075 INFO L495 AbstractCegarLoop]: Abstraction has 47641 states and 74420 transitions. [2023-12-25 22:26:59,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:26:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 47641 states and 74420 transitions. [2023-12-25 22:26:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-25 22:26:59,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:26:59,088 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:26:59,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-25 22:26:59,089 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:26:59,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:26:59,089 INFO L85 PathProgramCache]: Analyzing trace with hash 844133091, now seen corresponding path program 1 times [2023-12-25 22:26:59,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:26:59,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783125745] [2023-12-25 22:26:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:26:59,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:26:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-25 22:27:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783125745] [2023-12-25 22:27:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783125745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:00,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:00,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:27:00,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776920288] [2023-12-25 22:27:00,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:27:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:27:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:27:00,243 INFO L87 Difference]: Start difference. First operand 47641 states and 74420 transitions. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:00,846 INFO L93 Difference]: Finished difference Result 141175 states and 220296 transitions. [2023-12-25 22:27:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:27:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 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 510 [2023-12-25 22:27:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:00,932 INFO L225 Difference]: With dead ends: 141175 [2023-12-25 22:27:00,932 INFO L226 Difference]: Without dead ends: 94350 [2023-12-25 22:27:00,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:27:00,971 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 546 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:00,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 2412 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:27:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94350 states. [2023-12-25 22:27:01,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94350 to 47889. [2023-12-25 22:27:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47889 states, 47888 states have (on average 1.559221516872703) internal successors, (74668), 47888 states have internal predecessors, (74668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47889 states to 47889 states and 74668 transitions. [2023-12-25 22:27:01,807 INFO L78 Accepts]: Start accepts. Automaton has 47889 states and 74668 transitions. Word has length 510 [2023-12-25 22:27:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:27:01,807 INFO L495 AbstractCegarLoop]: Abstraction has 47889 states and 74668 transitions. [2023-12-25 22:27:01,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 47889 states and 74668 transitions. [2023-12-25 22:27:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-25 22:27:01,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:27:01,821 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:27:01,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-25 22:27:01,821 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:27:01,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:27:01,822 INFO L85 PathProgramCache]: Analyzing trace with hash 700978013, now seen corresponding path program 1 times [2023-12-25 22:27:01,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:27:01,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295986109] [2023-12-25 22:27:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:27:01,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:27:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-25 22:27:02,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:02,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295986109] [2023-12-25 22:27:02,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295986109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:02,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:02,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:27:02,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32100189] [2023-12-25 22:27:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:02,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:27:02,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:27:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:27:02,874 INFO L87 Difference]: Start difference. First operand 47889 states and 74668 transitions. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:03,709 INFO L93 Difference]: Finished difference Result 140595 states and 218792 transitions. [2023-12-25 22:27:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:27:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 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 510 [2023-12-25 22:27:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:03,806 INFO L225 Difference]: With dead ends: 140595 [2023-12-25 22:27:03,806 INFO L226 Difference]: Without dead ends: 93602 [2023-12-25 22:27:03,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:27:03,851 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 543 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:03,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 2488 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:27:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93602 states. [2023-12-25 22:27:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93602 to 48465. [2023-12-25 22:27:04,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48465 states, 48464 states have (on average 1.5525751072961373) internal successors, (75244), 48464 states have internal predecessors, (75244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48465 states to 48465 states and 75244 transitions. [2023-12-25 22:27:04,817 INFO L78 Accepts]: Start accepts. Automaton has 48465 states and 75244 transitions. Word has length 510 [2023-12-25 22:27:04,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:27:04,817 INFO L495 AbstractCegarLoop]: Abstraction has 48465 states and 75244 transitions. [2023-12-25 22:27:04,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:04,817 INFO L276 IsEmpty]: Start isEmpty. Operand 48465 states and 75244 transitions. [2023-12-25 22:27:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-25 22:27:04,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:27:04,832 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:27:04,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-25 22:27:04,832 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:27:04,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:27:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash -773678961, now seen corresponding path program 1 times [2023-12-25 22:27:04,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:27:04,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600774581] [2023-12-25 22:27:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:27:04,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:27:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-25 22:27:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:05,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600774581] [2023-12-25 22:27:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600774581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:27:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744961343] [2023-12-25 22:27:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:27:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:27:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:27:05,931 INFO L87 Difference]: Start difference. First operand 48465 states and 75244 transitions. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:06,512 INFO L93 Difference]: Finished difference Result 141579 states and 219464 transitions. [2023-12-25 22:27:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:27:06,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 510 [2023-12-25 22:27:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:06,598 INFO L225 Difference]: With dead ends: 141579 [2023-12-25 22:27:06,599 INFO L226 Difference]: Without dead ends: 94250 [2023-12-25 22:27:06,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:27:06,626 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 540 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:06,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 2564 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:27:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94250 states. [2023-12-25 22:27:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94250 to 48881. [2023-12-25 22:27:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48881 states, 48880 states have (on average 1.547872340425532) internal successors, (75660), 48880 states have internal predecessors, (75660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48881 states to 48881 states and 75660 transitions. [2023-12-25 22:27:07,539 INFO L78 Accepts]: Start accepts. Automaton has 48881 states and 75660 transitions. Word has length 510 [2023-12-25 22:27:07,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:27:07,540 INFO L495 AbstractCegarLoop]: Abstraction has 48881 states and 75660 transitions. [2023-12-25 22:27:07,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 48881 states and 75660 transitions. [2023-12-25 22:27:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-25 22:27:07,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:27:07,554 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:27:07,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-25 22:27:07,554 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:27:07,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:27:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash -865590083, now seen corresponding path program 1 times [2023-12-25 22:27:07,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:27:07,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193887563] [2023-12-25 22:27:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:27:07,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:27:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-25 22:27:11,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:11,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193887563] [2023-12-25 22:27:11,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193887563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:11,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:11,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:27:11,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532420775] [2023-12-25 22:27:11,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:11,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:27:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:27:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:27:11,159 INFO L87 Difference]: Start difference. First operand 48881 states and 75660 transitions. Second operand has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:12,184 INFO L93 Difference]: Finished difference Result 204472 states and 316126 transitions. [2023-12-25 22:27:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 22:27:12,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 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 510 [2023-12-25 22:27:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:12,328 INFO L225 Difference]: With dead ends: 204472 [2023-12-25 22:27:12,328 INFO L226 Difference]: Without dead ends: 156183 [2023-12-25 22:27:12,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:27:12,366 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 2250 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 5140 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:12,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2250 Valid, 5140 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:27:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156183 states. [2023-12-25 22:27:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156183 to 53093. [2023-12-25 22:27:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53093 states, 53092 states have (on average 1.5420779025088525) internal successors, (81872), 53092 states have internal predecessors, (81872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53093 states to 53093 states and 81872 transitions. [2023-12-25 22:27:13,514 INFO L78 Accepts]: Start accepts. Automaton has 53093 states and 81872 transitions. Word has length 510 [2023-12-25 22:27:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:27:13,514 INFO L495 AbstractCegarLoop]: Abstraction has 53093 states and 81872 transitions. [2023-12-25 22:27:13,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 53093 states and 81872 transitions. [2023-12-25 22:27:13,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-25 22:27:13,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:27:13,530 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:27:13,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-25 22:27:13,530 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:27:13,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:27:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1807010639, now seen corresponding path program 1 times [2023-12-25 22:27:13,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:27:13,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123356192] [2023-12-25 22:27:13,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:27:13,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:27:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-25 22:27:16,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:16,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123356192] [2023-12-25 22:27:16,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123356192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:16,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:16,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:27:16,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173471409] [2023-12-25 22:27:16,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:16,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:27:16,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:16,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:27:16,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:27:16,750 INFO L87 Difference]: Start difference. First operand 53093 states and 81872 transitions. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:17,722 INFO L93 Difference]: Finished difference Result 221984 states and 342610 transitions. [2023-12-25 22:27:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 22:27:17,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 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 511 [2023-12-25 22:27:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:17,881 INFO L225 Difference]: With dead ends: 221984 [2023-12-25 22:27:17,881 INFO L226 Difference]: Without dead ends: 169375 [2023-12-25 22:27:17,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:27:17,934 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 2264 mSDsluCounter, 4026 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 4883 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:17,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 4883 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:27:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169375 states. [2023-12-25 22:27:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169375 to 57437. [2023-12-25 22:27:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57437 states, 57436 states have (on average 1.5404276063792743) internal successors, (88476), 57436 states have internal predecessors, (88476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57437 states to 57437 states and 88476 transitions. [2023-12-25 22:27:19,348 INFO L78 Accepts]: Start accepts. Automaton has 57437 states and 88476 transitions. Word has length 511 [2023-12-25 22:27:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:27:19,349 INFO L495 AbstractCegarLoop]: Abstraction has 57437 states and 88476 transitions. [2023-12-25 22:27:19,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 57437 states and 88476 transitions. [2023-12-25 22:27:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-25 22:27:19,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:27:19,365 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:27:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-25 22:27:19,366 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:27:19,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:27:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash -224022385, now seen corresponding path program 1 times [2023-12-25 22:27:19,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:27:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951414756] [2023-12-25 22:27:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:27:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:27:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-25 22:27:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951414756] [2023-12-25 22:27:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951414756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:20,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:20,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:27:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585506511] [2023-12-25 22:27:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:27:20,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:27:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:27:20,475 INFO L87 Difference]: Start difference. First operand 57437 states and 88476 transitions. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:21,104 INFO L93 Difference]: Finished difference Result 167407 states and 257448 transitions. [2023-12-25 22:27:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:27:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 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 511 [2023-12-25 22:27:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:21,217 INFO L225 Difference]: With dead ends: 167407 [2023-12-25 22:27:21,217 INFO L226 Difference]: Without dead ends: 111338 [2023-12-25 22:27:21,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:27:21,254 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 537 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:21,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 3090 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:27:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111338 states. [2023-12-25 22:27:22,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111338 to 57853. [2023-12-25 22:27:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57853 states, 57852 states have (on average 1.5365415197400263) internal successors, (88892), 57852 states have internal predecessors, (88892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57853 states to 57853 states and 88892 transitions. [2023-12-25 22:27:22,424 INFO L78 Accepts]: Start accepts. Automaton has 57853 states and 88892 transitions. Word has length 511 [2023-12-25 22:27:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:27:22,425 INFO L495 AbstractCegarLoop]: Abstraction has 57853 states and 88892 transitions. [2023-12-25 22:27:22,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:22,425 INFO L276 IsEmpty]: Start isEmpty. Operand 57853 states and 88892 transitions. [2023-12-25 22:27:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-25 22:27:22,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:27:22,441 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:27:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-25 22:27:22,441 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:27:22,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:27:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash -68083167, now seen corresponding path program 1 times [2023-12-25 22:27:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:27:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701310721] [2023-12-25 22:27:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:27:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:27:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-25 22:27:23,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:23,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701310721] [2023-12-25 22:27:23,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701310721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:23,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:23,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:27:23,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363172596] [2023-12-25 22:27:23,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:23,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:27:23,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:23,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:27:23,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:27:23,507 INFO L87 Difference]: Start difference. First operand 57853 states and 88892 transitions. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:24,121 INFO L93 Difference]: Finished difference Result 169159 states and 259352 transitions. [2023-12-25 22:27:24,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:27:24,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 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 511 [2023-12-25 22:27:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:24,233 INFO L225 Difference]: With dead ends: 169159 [2023-12-25 22:27:24,233 INFO L226 Difference]: Without dead ends: 112434 [2023-12-25 22:27:24,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:27:24,355 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 540 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:24,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 3017 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:27:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112434 states. [2023-12-25 22:27:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112434 to 58429. [2023-12-25 22:27:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58429 states, 58428 states have (on average 1.5312521393852263) internal successors, (89468), 58428 states have internal predecessors, (89468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58429 states to 58429 states and 89468 transitions. [2023-12-25 22:27:25,361 INFO L78 Accepts]: Start accepts. Automaton has 58429 states and 89468 transitions. Word has length 511 [2023-12-25 22:27:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:27:25,361 INFO L495 AbstractCegarLoop]: Abstraction has 58429 states and 89468 transitions. [2023-12-25 22:27:25,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 58429 states and 89468 transitions. [2023-12-25 22:27:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-25 22:27:25,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:27:25,376 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:27:25,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-25 22:27:25,377 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:27:25,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:27:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2003511791, now seen corresponding path program 1 times [2023-12-25 22:27:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:27:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131866461] [2023-12-25 22:27:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:27:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:27:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-25 22:27:26,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:26,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131866461] [2023-12-25 22:27:26,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131866461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:26,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:26,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:27:26,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145595766] [2023-12-25 22:27:26,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:26,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:27:26,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:26,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:27:26,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:27:26,425 INFO L87 Difference]: Start difference. First operand 58429 states and 89468 transitions. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:27,242 INFO L93 Difference]: Finished difference Result 172379 states and 263524 transitions. [2023-12-25 22:27:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:27:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 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 511 [2023-12-25 22:27:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:27,381 INFO L225 Difference]: With dead ends: 172379 [2023-12-25 22:27:27,381 INFO L226 Difference]: Without dead ends: 114854 [2023-12-25 22:27:27,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:27:27,432 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 543 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:27,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 2402 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:27:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114854 states. [2023-12-25 22:27:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114854 to 58925. [2023-12-25 22:27:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58925 states, 58924 states have (on average 1.5267802593170865) internal successors, (89964), 58924 states have internal predecessors, (89964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58925 states to 58925 states and 89964 transitions. [2023-12-25 22:27:28,917 INFO L78 Accepts]: Start accepts. Automaton has 58925 states and 89964 transitions. Word has length 511 [2023-12-25 22:27:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:27:28,918 INFO L495 AbstractCegarLoop]: Abstraction has 58925 states and 89964 transitions. [2023-12-25 22:27:28,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 58925 states and 89964 transitions. [2023-12-25 22:27:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-25 22:27:28,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:27:28,936 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 22:27:28,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-25 22:27:28,937 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:27:28,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:27:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1193183861, now seen corresponding path program 1 times [2023-12-25 22:27:28,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:27:28,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548865162] [2023-12-25 22:27:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:27:28,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:27:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:27:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-25 22:27:30,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:27:30,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548865162] [2023-12-25 22:27:30,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548865162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:27:30,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:27:30,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:27:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430114837] [2023-12-25 22:27:30,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:27:30,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:27:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:27:30,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:27:30,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:27:30,110 INFO L87 Difference]: Start difference. First operand 58925 states and 89964 transitions. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:27:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:27:30,741 INFO L93 Difference]: Finished difference Result 174835 states and 266552 transitions. [2023-12-25 22:27:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:27:30,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 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 511 [2023-12-25 22:27:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:27:30,857 INFO L225 Difference]: With dead ends: 174835 [2023-12-25 22:27:30,857 INFO L226 Difference]: Without dead ends: 116738 [2023-12-25 22:27:30,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:27:30,900 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 546 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:27:30,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 2332 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:27:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116738 states.