/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-invgen/up.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 04:32:30,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 04:32:30,538 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 04:32:30,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 04:32:30,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 04:32:30,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 04:32:30,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 04:32:30,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 04:32:30,564 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 04:32:30,566 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 04:32:30,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 04:32:30,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 04:32:30,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 04:32:30,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 04:32:30,569 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 04:32:30,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 04:32:30,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 04:32:30,569 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 04:32:30,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 04:32:30,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 04:32:30,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 04:32:30,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 04:32:30,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 04:32:30,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 04:32:30,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 04:32:30,571 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 04:32:30,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 04:32:30,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 04:32:30,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 04:32:30,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 04:32:30,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 04:32:30,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 04:32:30,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:32:30,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 04:32:30,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 04:32:30,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 04:32:30,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 04:32:30,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 04:32:30,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 04:32:30,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 04:32:30,574 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 04:32:30,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 04:32:30,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 04:32:30,574 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 04:32:30,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 04:32:30,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 04:32:30,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 04:32:30,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 04:32:30,779 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 04:32:30,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/up.i [2023-12-21 04:32:31,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 04:32:32,044 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 04:32:32,044 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i [2023-12-21 04:32:32,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9572647c8/99dcbfa708c54d9b91fdd474a69f2c5e/FLAG94857c1e9 [2023-12-21 04:32:32,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9572647c8/99dcbfa708c54d9b91fdd474a69f2c5e [2023-12-21 04:32:32,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 04:32:32,066 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 04:32:32,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 04:32:32,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 04:32:32,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 04:32:32,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5693a8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32, skipping insertion in model container [2023-12-21 04:32:32,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 04:32:32,198 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2023-12-21 04:32:32,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:32:32,219 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 04:32:32,227 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2023-12-21 04:32:32,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:32:32,240 INFO L206 MainTranslator]: Completed translation [2023-12-21 04:32:32,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32 WrapperNode [2023-12-21 04:32:32,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 04:32:32,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 04:32:32,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 04:32:32,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 04:32:32,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,259 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-12-21 04:32:32,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 04:32:32,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 04:32:32,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 04:32:32,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 04:32:32,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,267 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,276 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 04:32:32,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 04:32:32,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 04:32:32,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 04:32:32,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 04:32:32,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (1/1) ... [2023-12-21 04:32:32,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:32:32,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:32,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 04:32:32,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 04:32:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 04:32:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 04:32:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 04:32:32,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 04:32:32,382 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 04:32:32,384 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 04:32:32,506 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 04:32:32,518 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 04:32:32,518 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 04:32:32,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:32:32 BoogieIcfgContainer [2023-12-21 04:32:32,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 04:32:32,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 04:32:32,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 04:32:32,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 04:32:32,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:32:32" (1/3) ... [2023-12-21 04:32:32,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6fb699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:32:32, skipping insertion in model container [2023-12-21 04:32:32,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:32" (2/3) ... [2023-12-21 04:32:32,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6fb699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:32:32, skipping insertion in model container [2023-12-21 04:32:32,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:32:32" (3/3) ... [2023-12-21 04:32:32,524 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i [2023-12-21 04:32:32,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 04:32:32,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 04:32:32,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 04:32:32,578 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;@618cf07e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 04:32:32,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 04:32:32,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:32,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 04:32:32,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:32,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 04:32:32,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:32,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2070081356, now seen corresponding path program 1 times [2023-12-21 04:32:32,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:32,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14102531] [2023-12-21 04:32:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:32,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:32,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14102531] [2023-12-21 04:32:32,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14102531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:32:32,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:32:32,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 04:32:32,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316142675] [2023-12-21 04:32:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:32:32,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 04:32:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:32,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 04:32:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 04:32:32,883 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:32,941 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2023-12-21 04:32:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 04:32:32,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-21 04:32:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:32,947 INFO L225 Difference]: With dead ends: 22 [2023-12-21 04:32:32,947 INFO L226 Difference]: Without dead ends: 9 [2023-12-21 04:32:32,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:32:32,952 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:32,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-21 04:32:32,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-21 04:32:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-12-21 04:32:32,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-12-21 04:32:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:32,973 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-12-21 04:32:32,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:32,973 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-12-21 04:32:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 04:32:32,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:32,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:32:32,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 04:32:32,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:32,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash -200541263, now seen corresponding path program 1 times [2023-12-21 04:32:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:32,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294219847] [2023-12-21 04:32:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:33,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294219847] [2023-12-21 04:32:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294219847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871844411] [2023-12-21 04:32:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:33,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:33,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:33,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 04:32:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:33,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 04:32:33,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:33,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 04:32:33,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871844411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:32:33,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 04:32:33,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-21 04:32:33,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113436417] [2023-12-21 04:32:33,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:32:33,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 04:32:33,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:33,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 04:32:33,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:32:33,170 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:33,202 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-12-21 04:32:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 04:32:33,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-21 04:32:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:33,203 INFO L225 Difference]: With dead ends: 19 [2023-12-21 04:32:33,203 INFO L226 Difference]: Without dead ends: 17 [2023-12-21 04:32:33,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-21 04:32:33,204 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:33,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:33,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-21 04:32:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2023-12-21 04:32:33,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-12-21 04:32:33,207 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2023-12-21 04:32:33,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:33,207 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-12-21 04:32:33,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-21 04:32:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 04:32:33,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:33,208 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:32:33,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:33,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:33,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:33,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash -20437016, now seen corresponding path program 1 times [2023-12-21 04:32:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:33,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747317775] [2023-12-21 04:32:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:33,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:33,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747317775] [2023-12-21 04:32:33,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747317775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:33,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201868277] [2023-12-21 04:32:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:33,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:33,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:33,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:33,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 04:32:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:33,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 04:32:33,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:33,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201868277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:33,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:33,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-21 04:32:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649083908] [2023-12-21 04:32:33,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:33,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 04:32:33,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 04:32:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-21 04:32:33,634 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:33,683 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-12-21 04:32:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 04:32:33,684 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 10 [2023-12-21 04:32:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:33,684 INFO L225 Difference]: With dead ends: 22 [2023-12-21 04:32:33,684 INFO L226 Difference]: Without dead ends: 12 [2023-12-21 04:32:33,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-21 04:32:33,685 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:33,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-21 04:32:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-21 04:32:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-12-21 04:32:33,688 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2023-12-21 04:32:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:33,688 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-12-21 04:32:33,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-21 04:32:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 04:32:33,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:33,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:32:33,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 04:32:33,893 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,SelfDestructingSolverStorable2 [2023-12-21 04:32:33,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:33,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1449494067, now seen corresponding path program 2 times [2023-12-21 04:32:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:33,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274923894] [2023-12-21 04:32:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:33,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:33,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274923894] [2023-12-21 04:32:33,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274923894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:33,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254268426] [2023-12-21 04:32:33,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:32:33,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:33,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:33,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:34,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 04:32:34,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:32:34,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:34,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 04:32:34,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:34,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:34,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254268426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:34,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:34,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-12-21 04:32:34,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072534872] [2023-12-21 04:32:34,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:34,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 04:32:34,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:34,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 04:32:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 04:32:34,058 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:34,092 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-12-21 04:32:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 04:32:34,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 11 [2023-12-21 04:32:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:34,094 INFO L225 Difference]: With dead ends: 23 [2023-12-21 04:32:34,095 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 04:32:34,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-21 04:32:34,100 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:34,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 04:32:34,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2023-12-21 04:32:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-12-21 04:32:34,108 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2023-12-21 04:32:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:34,108 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-12-21 04:32:34,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-12-21 04:32:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 04:32:34,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:34,110 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-21 04:32:34,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:34,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:34,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:34,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:34,315 INFO L85 PathProgramCache]: Analyzing trace with hash -271735732, now seen corresponding path program 3 times [2023-12-21 04:32:34,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:34,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902234342] [2023-12-21 04:32:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:34,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:34,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902234342] [2023-12-21 04:32:34,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902234342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:34,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952655102] [2023-12-21 04:32:34,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:32:34,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:34,400 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:34,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 04:32:34,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 04:32:34,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:34,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 04:32:34,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:34,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:34,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952655102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:34,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:34,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-12-21 04:32:34,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167770075] [2023-12-21 04:32:34,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:34,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 04:32:34,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:34,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 04:32:34,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-21 04:32:34,597 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:34,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:34,662 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-12-21 04:32:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 04:32:34,667 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-21 04:32:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:34,668 INFO L225 Difference]: With dead ends: 29 [2023-12-21 04:32:34,669 INFO L226 Difference]: Without dead ends: 16 [2023-12-21 04:32:34,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-12-21 04:32:34,670 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:34,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-21 04:32:34,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-21 04:32:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-12-21 04:32:34,675 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2023-12-21 04:32:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:34,675 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-12-21 04:32:34,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-21 04:32:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 04:32:34,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:34,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-12-21 04:32:34,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:34,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:34,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:34,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:34,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1672117169, now seen corresponding path program 4 times [2023-12-21 04:32:34,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683253117] [2023-12-21 04:32:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:34,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:34,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683253117] [2023-12-21 04:32:34,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683253117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:34,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39533303] [2023-12-21 04:32:34,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:32:34,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:34,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:34,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:34,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 04:32:34,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:32:34,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:34,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 04:32:34,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:35,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:35,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39533303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:35,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:35,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-12-21 04:32:35,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826525792] [2023-12-21 04:32:35,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:35,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 04:32:35,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:35,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 04:32:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-21 04:32:35,054 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:35,097 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-12-21 04:32:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 04:32:35,098 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 15 [2023-12-21 04:32:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:35,099 INFO L225 Difference]: With dead ends: 27 [2023-12-21 04:32:35,099 INFO L226 Difference]: Without dead ends: 25 [2023-12-21 04:32:35,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 04:32:35,100 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:35,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-21 04:32:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2023-12-21 04:32:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-12-21 04:32:35,104 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2023-12-21 04:32:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:35,105 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-12-21 04:32:35,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-12-21 04:32:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 04:32:35,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:35,106 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2023-12-21 04:32:35,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:35,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:35,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:35,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1016702952, now seen corresponding path program 5 times [2023-12-21 04:32:35,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:35,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869702330] [2023-12-21 04:32:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:35,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:35,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869702330] [2023-12-21 04:32:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869702330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:35,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008220181] [2023-12-21 04:32:35,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:32:35,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:35,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:35,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:35,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 04:32:35,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 04:32:35,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:35,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 04:32:35,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:35,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:35,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008220181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:35,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:35,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-21 04:32:35,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008881673] [2023-12-21 04:32:35,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:35,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 04:32:35,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 04:32:35,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-12-21 04:32:35,581 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:35,650 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-12-21 04:32:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 04:32:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 18 [2023-12-21 04:32:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:35,651 INFO L225 Difference]: With dead ends: 36 [2023-12-21 04:32:35,651 INFO L226 Difference]: Without dead ends: 20 [2023-12-21 04:32:35,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-12-21 04:32:35,652 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:35,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-21 04:32:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-21 04:32:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-12-21 04:32:35,654 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2023-12-21 04:32:35,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:35,654 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-12-21 04:32:35,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-12-21 04:32:35,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 04:32:35,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:35,655 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2023-12-21 04:32:35,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:35,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:35,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:35,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1036141773, now seen corresponding path program 6 times [2023-12-21 04:32:35,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775242376] [2023-12-21 04:32:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:35,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775242376] [2023-12-21 04:32:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775242376] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193217833] [2023-12-21 04:32:35,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:32:35,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:35,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:35,923 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:35,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 04:32:35,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 04:32:35,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:35,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 04:32:35,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:36,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193217833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:36,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:36,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-12-21 04:32:36,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58327924] [2023-12-21 04:32:36,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:36,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 04:32:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 04:32:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 04:32:36,086 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:36,134 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-12-21 04:32:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 04:32:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 19 [2023-12-21 04:32:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:36,135 INFO L225 Difference]: With dead ends: 31 [2023-12-21 04:32:36,135 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 04:32:36,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-12-21 04:32:36,136 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:36,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 22 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:36,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 04:32:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2023-12-21 04:32:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-21 04:32:36,138 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2023-12-21 04:32:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:36,138 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-21 04:32:36,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-21 04:32:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 04:32:36,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:36,139 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-21 04:32:36,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:36,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:36,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:36,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash -225576628, now seen corresponding path program 7 times [2023-12-21 04:32:36,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:36,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432480573] [2023-12-21 04:32:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432480573] [2023-12-21 04:32:36,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432480573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39626967] [2023-12-21 04:32:36,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:32:36,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:36,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:36,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 04:32:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:36,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 04:32:36,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:36,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39626967] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:36,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:36,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2023-12-21 04:32:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220601100] [2023-12-21 04:32:36,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:36,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 04:32:36,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 04:32:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-12-21 04:32:36,682 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:36,767 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2023-12-21 04:32:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 04:32:36,767 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 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 22 [2023-12-21 04:32:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:36,767 INFO L225 Difference]: With dead ends: 43 [2023-12-21 04:32:36,767 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 04:32:36,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2023-12-21 04:32:36,769 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:36,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 56 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 04:32:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 04:32:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:36,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-12-21 04:32:36,781 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2023-12-21 04:32:36,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:36,781 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-12-21 04:32:36,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-12-21 04:32:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 04:32:36,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:36,782 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-12-21 04:32:36,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 04:32:36,986 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,SelfDestructingSolverStorable8 [2023-12-21 04:32:36,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:36,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1029465167, now seen corresponding path program 8 times [2023-12-21 04:32:36,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:36,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351437091] [2023-12-21 04:32:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:36,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351437091] [2023-12-21 04:32:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351437091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:37,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792595009] [2023-12-21 04:32:37,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:32:37,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:37,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:37,064 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:37,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 04:32:37,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:32:37,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:37,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 04:32:37,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:37,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:37,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792595009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:37,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:37,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2023-12-21 04:32:37,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166678443] [2023-12-21 04:32:37,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:37,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 04:32:37,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:37,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 04:32:37,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 04:32:37,181 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:37,237 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2023-12-21 04:32:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 04:32:37,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 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 23 [2023-12-21 04:32:37,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:37,238 INFO L225 Difference]: With dead ends: 35 [2023-12-21 04:32:37,238 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 04:32:37,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 10 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2023-12-21 04:32:37,238 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:37,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 04:32:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2023-12-21 04:32:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-12-21 04:32:37,241 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2023-12-21 04:32:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:37,241 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-12-21 04:32:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-12-21 04:32:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 04:32:37,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:37,241 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2023-12-21 04:32:37,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:37,446 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,SelfDestructingSolverStorable9 [2023-12-21 04:32:37,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:37,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1569490920, now seen corresponding path program 9 times [2023-12-21 04:32:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006754147] [2023-12-21 04:32:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:37,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006754147] [2023-12-21 04:32:37,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006754147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:37,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686692331] [2023-12-21 04:32:37,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:32:37,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:37,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:37,595 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:37,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 04:32:37,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 04:32:37,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:37,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 04:32:37,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:37,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686692331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:37,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:37,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2023-12-21 04:32:37,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974266894] [2023-12-21 04:32:37,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:37,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 04:32:37,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:37,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 04:32:37,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-12-21 04:32:37,883 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:37,974 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2023-12-21 04:32:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 04:32:37,974 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2023-12-21 04:32:37,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:37,975 INFO L225 Difference]: With dead ends: 50 [2023-12-21 04:32:37,975 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 04:32:37,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2023-12-21 04:32:37,976 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:37,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 04:32:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-21 04:32:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-12-21 04:32:37,981 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2023-12-21 04:32:37,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:37,981 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-12-21 04:32:37,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-12-21 04:32:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 04:32:37,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:37,982 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-21 04:32:37,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:38,186 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,SelfDestructingSolverStorable10 [2023-12-21 04:32:38,187 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:38,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash 194015181, now seen corresponding path program 10 times [2023-12-21 04:32:38,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951223435] [2023-12-21 04:32:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:38,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:38,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951223435] [2023-12-21 04:32:38,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951223435] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:38,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694902850] [2023-12-21 04:32:38,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:32:38,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:38,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:38,284 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:38,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 04:32:38,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:32:38,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:38,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 04:32:38,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:38,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:38,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694902850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:38,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:38,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-12-21 04:32:38,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272876376] [2023-12-21 04:32:38,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:38,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 04:32:38,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 04:32:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-21 04:32:38,456 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:38,515 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-12-21 04:32:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 04:32:38,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 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 27 [2023-12-21 04:32:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:38,517 INFO L225 Difference]: With dead ends: 39 [2023-12-21 04:32:38,518 INFO L226 Difference]: Without dead ends: 37 [2023-12-21 04:32:38,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 12 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2023-12-21 04:32:38,518 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:38,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 17 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-21 04:32:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2023-12-21 04:32:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 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) [2023-12-21 04:32:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-12-21 04:32:38,524 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2023-12-21 04:32:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:38,524 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-12-21 04:32:38,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-12-21 04:32:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 04:32:38,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:38,526 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2023-12-21 04:32:38,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:38,731 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,SelfDestructingSolverStorable11 [2023-12-21 04:32:38,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:38,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1114902964, now seen corresponding path program 11 times [2023-12-21 04:32:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499176948] [2023-12-21 04:32:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:38,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:38,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:38,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499176948] [2023-12-21 04:32:38,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499176948] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:38,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941083136] [2023-12-21 04:32:38,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:32:38,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:38,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:38,862 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:38,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 04:32:38,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-21 04:32:38,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:38,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 04:32:38,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:39,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:39,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941083136] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:39,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:39,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2023-12-21 04:32:39,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217130855] [2023-12-21 04:32:39,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 04:32:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 04:32:39,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2023-12-21 04:32:39,177 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:39,289 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2023-12-21 04:32:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 04:32:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2023-12-21 04:32:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:39,290 INFO L225 Difference]: With dead ends: 57 [2023-12-21 04:32:39,290 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 04:32:39,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 37 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 04:32:39,291 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:39,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 72 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 04:32:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-21 04:32:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 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) [2023-12-21 04:32:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-12-21 04:32:39,293 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2023-12-21 04:32:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:39,293 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-12-21 04:32:39,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-12-21 04:32:39,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 04:32:39,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:39,294 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2023-12-21 04:32:39,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:39,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 04:32:39,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:39,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1977572273, now seen corresponding path program 12 times [2023-12-21 04:32:39,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:39,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725567364] [2023-12-21 04:32:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:39,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:39,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725567364] [2023-12-21 04:32:39,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725567364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:39,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479137687] [2023-12-21 04:32:39,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:32:39,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:39,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:39,604 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:39,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 04:32:39,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 04:32:39,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:39,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 04:32:39,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:39,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:39,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479137687] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:39,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:39,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-12-21 04:32:39,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001398515] [2023-12-21 04:32:39,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:39,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 04:32:39,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:39,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 04:32:39,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-21 04:32:39,791 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:39,871 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2023-12-21 04:32:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 04:32:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 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 31 [2023-12-21 04:32:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:39,872 INFO L225 Difference]: With dead ends: 43 [2023-12-21 04:32:39,872 INFO L226 Difference]: Without dead ends: 41 [2023-12-21 04:32:39,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 14 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2023-12-21 04:32:39,872 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:39,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:39,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-21 04:32:39,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2023-12-21 04:32:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-12-21 04:32:39,875 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2023-12-21 04:32:39,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:39,875 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-12-21 04:32:39,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-12-21 04:32:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 04:32:39,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:39,875 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2023-12-21 04:32:39,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:40,080 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,SelfDestructingSolverStorable13 [2023-12-21 04:32:40,080 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:40,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash -205994008, now seen corresponding path program 13 times [2023-12-21 04:32:40,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:40,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330209945] [2023-12-21 04:32:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:40,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:40,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:40,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330209945] [2023-12-21 04:32:40,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330209945] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:40,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983425949] [2023-12-21 04:32:40,239 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:32:40,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:40,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:40,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:40,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 04:32:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:40,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 04:32:40,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:40,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:40,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983425949] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:40,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:40,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2023-12-21 04:32:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623235511] [2023-12-21 04:32:40,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:40,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 04:32:40,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 04:32:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2023-12-21 04:32:40,686 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:40,807 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2023-12-21 04:32:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 04:32:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 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 [2023-12-21 04:32:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:40,807 INFO L225 Difference]: With dead ends: 64 [2023-12-21 04:32:40,807 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 04:32:40,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 42 SyntacticMatches, 15 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 04:32:40,808 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:40,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 04:32:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-21 04:32:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2023-12-21 04:32:40,810 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2023-12-21 04:32:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:40,811 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2023-12-21 04:32:40,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2023-12-21 04:32:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 04:32:40,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:40,811 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2023-12-21 04:32:40,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:41,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:41,016 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:41,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1344076493, now seen corresponding path program 14 times [2023-12-21 04:32:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:41,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129487494] [2023-12-21 04:32:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:41,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129487494] [2023-12-21 04:32:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129487494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033399080] [2023-12-21 04:32:41,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:32:41,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:41,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:41,158 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:41,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 04:32:41,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:32:41,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:41,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 04:32:41,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:41,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:41,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033399080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:41,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:41,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2023-12-21 04:32:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278801452] [2023-12-21 04:32:41,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:41,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 04:32:41,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:41,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 04:32:41,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-21 04:32:41,370 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:41,460 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2023-12-21 04:32:41,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 04:32:41,461 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 35 [2023-12-21 04:32:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:41,461 INFO L225 Difference]: With dead ends: 47 [2023-12-21 04:32:41,461 INFO L226 Difference]: Without dead ends: 45 [2023-12-21 04:32:41,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2023-12-21 04:32:41,462 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:41,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-21 04:32:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2023-12-21 04:32:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2023-12-21 04:32:41,464 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2023-12-21 04:32:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:41,464 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2023-12-21 04:32:41,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2023-12-21 04:32:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 04:32:41,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:41,465 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2023-12-21 04:32:41,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 04:32:41,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 04:32:41,669 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:41,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash -592477364, now seen corresponding path program 15 times [2023-12-21 04:32:41,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:41,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791283060] [2023-12-21 04:32:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:41,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:41,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791283060] [2023-12-21 04:32:41,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791283060] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723550875] [2023-12-21 04:32:41,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:32:41,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:41,898 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) [2023-12-21 04:32:41,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 04:32:41,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-21 04:32:41,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:41,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 04:32:41,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:42,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723550875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:42,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2023-12-21 04:32:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514605341] [2023-12-21 04:32:42,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:42,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 04:32:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 04:32:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2023-12-21 04:32:42,303 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:42,453 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2023-12-21 04:32:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 04:32:42,454 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 04:32:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:42,454 INFO L225 Difference]: With dead ends: 71 [2023-12-21 04:32:42,454 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 04:32:42,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 17 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 04:32:42,455 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:42,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 110 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:42,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 04:32:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-21 04:32:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2023-12-21 04:32:42,457 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2023-12-21 04:32:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:42,457 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2023-12-21 04:32:42,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2023-12-21 04:32:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 04:32:42,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:42,458 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2023-12-21 04:32:42,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-21 04:32:42,662 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,SelfDestructingSolverStorable16 [2023-12-21 04:32:42,663 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:42,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:42,663 INFO L85 PathProgramCache]: Analyzing trace with hash 876985265, now seen corresponding path program 16 times [2023-12-21 04:32:42,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:42,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988670105] [2023-12-21 04:32:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:42,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:42,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988670105] [2023-12-21 04:32:42,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988670105] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496352395] [2023-12-21 04:32:42,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:32:42,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:42,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:42,822 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) [2023-12-21 04:32:42,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 04:32:42,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:32:42,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:42,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 04:32:42,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:42,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:43,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496352395] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:43,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:43,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2023-12-21 04:32:43,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575943272] [2023-12-21 04:32:43,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:43,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 04:32:43,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:43,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 04:32:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 04:32:43,049 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:43,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:43,149 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2023-12-21 04:32:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 04:32:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 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 39 [2023-12-21 04:32:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:43,149 INFO L225 Difference]: With dead ends: 51 [2023-12-21 04:32:43,149 INFO L226 Difference]: Without dead ends: 49 [2023-12-21 04:32:43,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 18 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2023-12-21 04:32:43,150 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:43,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 21 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-21 04:32:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2023-12-21 04:32:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2023-12-21 04:32:43,155 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2023-12-21 04:32:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:43,155 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2023-12-21 04:32:43,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2023-12-21 04:32:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 04:32:43,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:43,156 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1] [2023-12-21 04:32:43,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:43,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 04:32:43,360 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:43,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash -13211672, now seen corresponding path program 17 times [2023-12-21 04:32:43,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:43,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608455740] [2023-12-21 04:32:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:43,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:43,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608455740] [2023-12-21 04:32:43,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608455740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119247231] [2023-12-21 04:32:43,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:32:43,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:43,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:43,608 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) [2023-12-21 04:32:43,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 04:32:43,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-12-21 04:32:43,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:43,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 04:32:43,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:43,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119247231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:44,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:44,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2023-12-21 04:32:44,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494315302] [2023-12-21 04:32:44,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:44,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 04:32:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:44,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 04:32:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 04:32:44,087 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:44,236 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2023-12-21 04:32:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 04:32:44,236 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 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 42 [2023-12-21 04:32:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:44,237 INFO L225 Difference]: With dead ends: 78 [2023-12-21 04:32:44,237 INFO L226 Difference]: Without dead ends: 44 [2023-12-21 04:32:44,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 52 SyntacticMatches, 19 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=481, Invalid=1589, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 04:32:44,238 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:44,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-21 04:32:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-21 04:32:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2023-12-21 04:32:44,240 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2023-12-21 04:32:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:44,240 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2023-12-21 04:32:44,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2023-12-21 04:32:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 04:32:44,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:44,240 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2023-12-21 04:32:44,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:44,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:44,449 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:44,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:44,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1233132083, now seen corresponding path program 18 times [2023-12-21 04:32:44,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:44,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305294841] [2023-12-21 04:32:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:44,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:44,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305294841] [2023-12-21 04:32:44,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305294841] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482948332] [2023-12-21 04:32:44,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:32:44,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:44,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:44,628 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) [2023-12-21 04:32:44,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 04:32:44,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-21 04:32:44,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:44,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 04:32:44,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:44,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:44,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482948332] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:44,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:44,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2023-12-21 04:32:44,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651485629] [2023-12-21 04:32:44,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:44,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 04:32:44,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:44,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 04:32:44,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2023-12-21 04:32:44,963 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:45,089 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2023-12-21 04:32:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 04:32:45,089 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 43 [2023-12-21 04:32:45,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:45,090 INFO L225 Difference]: With dead ends: 55 [2023-12-21 04:32:45,090 INFO L226 Difference]: Without dead ends: 53 [2023-12-21 04:32:45,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 20 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2023-12-21 04:32:45,091 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:45,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-21 04:32:45,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2023-12-21 04:32:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2023-12-21 04:32:45,094 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2023-12-21 04:32:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:45,094 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2023-12-21 04:32:45,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2023-12-21 04:32:45,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 04:32:45,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:45,094 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-12-21 04:32:45,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:45,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:45,295 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:45,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1377781684, now seen corresponding path program 19 times [2023-12-21 04:32:45,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:45,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705347229] [2023-12-21 04:32:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:45,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:45,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:45,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705347229] [2023-12-21 04:32:45,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705347229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:45,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779258734] [2023-12-21 04:32:45,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:32:45,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:45,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:45,576 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) [2023-12-21 04:32:45,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 04:32:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:45,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 04:32:45,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:45,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:46,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779258734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:46,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:46,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2023-12-21 04:32:46,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261010793] [2023-12-21 04:32:46,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:46,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 04:32:46,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:46,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 04:32:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 04:32:46,094 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:46,306 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2023-12-21 04:32:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 04:32:46,307 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 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 46 [2023-12-21 04:32:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:46,307 INFO L225 Difference]: With dead ends: 85 [2023-12-21 04:32:46,307 INFO L226 Difference]: Without dead ends: 48 [2023-12-21 04:32:46,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 57 SyntacticMatches, 21 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 04:32:46,308 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:46,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:46,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-21 04:32:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-21 04:32:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2023-12-21 04:32:46,311 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2023-12-21 04:32:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:46,311 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2023-12-21 04:32:46,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2023-12-21 04:32:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 04:32:46,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:46,311 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2023-12-21 04:32:46,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:46,516 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,SelfDestructingSolverStorable20 [2023-12-21 04:32:46,516 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:46,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2034320463, now seen corresponding path program 20 times [2023-12-21 04:32:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:46,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426085857] [2023-12-21 04:32:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:46,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:46,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426085857] [2023-12-21 04:32:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426085857] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738246949] [2023-12-21 04:32:46,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:32:46,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:46,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:46,687 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) [2023-12-21 04:32:46,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 04:32:46,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:32:46,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:46,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 04:32:46,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:46,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:46,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738246949] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:46,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:46,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2023-12-21 04:32:46,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333967072] [2023-12-21 04:32:46,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:46,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 04:32:46,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:46,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 04:32:46,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-12-21 04:32:46,938 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:47,053 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2023-12-21 04:32:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 04:32:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 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 47 [2023-12-21 04:32:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:47,054 INFO L225 Difference]: With dead ends: 59 [2023-12-21 04:32:47,054 INFO L226 Difference]: Without dead ends: 57 [2023-12-21 04:32:47,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 79 SyntacticMatches, 22 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2023-12-21 04:32:47,055 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:47,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:32:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-21 04:32:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2023-12-21 04:32:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2023-12-21 04:32:47,059 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2023-12-21 04:32:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:47,059 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2023-12-21 04:32:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2023-12-21 04:32:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 04:32:47,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:47,060 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1] [2023-12-21 04:32:47,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:47,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-21 04:32:47,261 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:47,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1847420904, now seen corresponding path program 21 times [2023-12-21 04:32:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:47,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928944573] [2023-12-21 04:32:47,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:47,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:47,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:47,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928944573] [2023-12-21 04:32:47,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928944573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:47,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245564480] [2023-12-21 04:32:47,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:32:47,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:47,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:47,573 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) [2023-12-21 04:32:47,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 04:32:47,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 04:32:47,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:47,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 04:32:47,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:47,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245564480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:48,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 40 [2023-12-21 04:32:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402903675] [2023-12-21 04:32:48,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:48,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 04:32:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:48,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 04:32:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 04:32:48,144 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:48,355 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2023-12-21 04:32:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 04:32:48,356 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 04:32:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:48,356 INFO L225 Difference]: With dead ends: 92 [2023-12-21 04:32:48,356 INFO L226 Difference]: Without dead ends: 52 [2023-12-21 04:32:48,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 62 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=658, Invalid=2204, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 04:32:48,357 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:48,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-21 04:32:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-21 04:32:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2023-12-21 04:32:48,360 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2023-12-21 04:32:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:48,360 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2023-12-21 04:32:48,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:48,360 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2023-12-21 04:32:48,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 04:32:48,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:48,360 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2023-12-21 04:32:48,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:48,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:48,565 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:48,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash -674156339, now seen corresponding path program 22 times [2023-12-21 04:32:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:48,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211107160] [2023-12-21 04:32:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:48,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:48,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211107160] [2023-12-21 04:32:48,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211107160] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:48,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307514674] [2023-12-21 04:32:48,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:32:48,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:48,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:48,773 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) [2023-12-21 04:32:48,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 04:32:48,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:32:48,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:48,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 04:32:48,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:48,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:49,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307514674] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:49,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:49,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2023-12-21 04:32:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655143119] [2023-12-21 04:32:49,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 04:32:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 04:32:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-12-21 04:32:49,042 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:49,157 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2023-12-21 04:32:49,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 04:32:49,157 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 04:32:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:49,158 INFO L225 Difference]: With dead ends: 63 [2023-12-21 04:32:49,158 INFO L226 Difference]: Without dead ends: 61 [2023-12-21 04:32:49,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 86 SyntacticMatches, 24 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2023-12-21 04:32:49,158 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:49,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 21 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-21 04:32:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2023-12-21 04:32:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2023-12-21 04:32:49,161 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2023-12-21 04:32:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:49,161 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2023-12-21 04:32:49,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2023-12-21 04:32:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 04:32:49,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:49,161 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2023-12-21 04:32:49,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:49,362 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:49,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash -519598772, now seen corresponding path program 23 times [2023-12-21 04:32:49,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:49,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006407486] [2023-12-21 04:32:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006407486] [2023-12-21 04:32:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006407486] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768609462] [2023-12-21 04:32:49,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:32:49,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:49,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:49,683 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) [2023-12-21 04:32:49,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 04:32:49,730 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-21 04:32:49,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:49,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 04:32:49,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:50,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768609462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:50,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:50,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 43 [2023-12-21 04:32:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658502711] [2023-12-21 04:32:50,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 04:32:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 04:32:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 04:32:50,266 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:50,492 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2023-12-21 04:32:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 04:32:50,493 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 04:32:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:50,493 INFO L225 Difference]: With dead ends: 99 [2023-12-21 04:32:50,493 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 04:32:50,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 67 SyntacticMatches, 25 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=757, Invalid=2549, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 04:32:50,494 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:50,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 127 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 04:32:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-21 04:32:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-12-21 04:32:50,497 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2023-12-21 04:32:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:50,497 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-12-21 04:32:50,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-12-21 04:32:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 04:32:50,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:50,497 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1] [2023-12-21 04:32:50,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 04:32:50,702 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:50,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1211259825, now seen corresponding path program 24 times [2023-12-21 04:32:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127744550] [2023-12-21 04:32:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:50,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:50,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127744550] [2023-12-21 04:32:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127744550] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:50,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828063442] [2023-12-21 04:32:50,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:32:50,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:50,905 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) [2023-12-21 04:32:50,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 04:32:50,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-21 04:32:50,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:50,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 04:32:50,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:51,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828063442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:51,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 18 [2023-12-21 04:32:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738903889] [2023-12-21 04:32:51,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 04:32:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 04:32:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2023-12-21 04:32:51,232 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:51,366 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2023-12-21 04:32:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 04:32:51,366 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 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 55 [2023-12-21 04:32:51,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:51,367 INFO L225 Difference]: With dead ends: 67 [2023-12-21 04:32:51,367 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 04:32:51,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 93 SyntacticMatches, 26 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 04:32:51,367 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:51,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:51,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 04:32:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2023-12-21 04:32:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2023-12-21 04:32:51,370 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2023-12-21 04:32:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:51,370 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2023-12-21 04:32:51,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2023-12-21 04:32:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 04:32:51,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:51,371 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1] [2023-12-21 04:32:51,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:51,571 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,SelfDestructingSolverStorable25 [2023-12-21 04:32:51,571 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:51,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:51,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1668954136, now seen corresponding path program 25 times [2023-12-21 04:32:51,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:51,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558691615] [2023-12-21 04:32:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:51,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 223 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:51,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:51,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558691615] [2023-12-21 04:32:51,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558691615] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:51,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904282162] [2023-12-21 04:32:51,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:32:51,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:51,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:51,999 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) [2023-12-21 04:32:52,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 04:32:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:52,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 04:32:52,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:52,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:52,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904282162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:52,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:52,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2023-12-21 04:32:52,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831342481] [2023-12-21 04:32:52,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:52,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 04:32:52,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:52,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 04:32:52,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 04:32:52,505 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:52,818 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2023-12-21 04:32:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 04:32:52,818 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 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 58 [2023-12-21 04:32:52,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:52,818 INFO L225 Difference]: With dead ends: 106 [2023-12-21 04:32:52,818 INFO L226 Difference]: Without dead ends: 60 [2023-12-21 04:32:52,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 72 SyntacticMatches, 27 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=863, Invalid=2919, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 04:32:52,821 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:52,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-21 04:32:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-21 04:32:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2023-12-21 04:32:52,824 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2023-12-21 04:32:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:52,824 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2023-12-21 04:32:52,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2023-12-21 04:32:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 04:32:52,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:52,824 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1] [2023-12-21 04:32:52,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:53,029 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,SelfDestructingSolverStorable26 [2023-12-21 04:32:53,029 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:53,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:53,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1154950195, now seen corresponding path program 26 times [2023-12-21 04:32:53,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200189386] [2023-12-21 04:32:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 91 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:53,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200189386] [2023-12-21 04:32:53,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200189386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:53,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981981320] [2023-12-21 04:32:53,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:32:53,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:53,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:53,254 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) [2023-12-21 04:32:53,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 04:32:53,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:32:53,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:53,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 04:32:53,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:53,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:53,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981981320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:53,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:53,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2023-12-21 04:32:53,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894275691] [2023-12-21 04:32:53,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:53,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 04:32:53,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:53,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 04:32:53,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2023-12-21 04:32:53,523 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:53,697 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2023-12-21 04:32:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 04:32:53,697 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 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 59 [2023-12-21 04:32:53,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:53,698 INFO L225 Difference]: With dead ends: 71 [2023-12-21 04:32:53,698 INFO L226 Difference]: Without dead ends: 69 [2023-12-21 04:32:53,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 100 SyntacticMatches, 28 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 04:32:53,698 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:53,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 20 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-21 04:32:53,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2023-12-21 04:32:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2023-12-21 04:32:53,701 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2023-12-21 04:32:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:53,701 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2023-12-21 04:32:53,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2023-12-21 04:32:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 04:32:53,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:53,702 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2023-12-21 04:32:53,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:53,906 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,SelfDestructingSolverStorable27 [2023-12-21 04:32:53,906 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:53,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:53,906 INFO L85 PathProgramCache]: Analyzing trace with hash -133430708, now seen corresponding path program 27 times [2023-12-21 04:32:53,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:53,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952433080] [2023-12-21 04:32:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:53,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:54,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952433080] [2023-12-21 04:32:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952433080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788780447] [2023-12-21 04:32:54,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:32:54,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:54,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:54,294 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) [2023-12-21 04:32:54,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 04:32:54,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-21 04:32:54,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:54,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 04:32:54,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:54,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:55,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788780447] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:55,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:55,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2023-12-21 04:32:55,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540477610] [2023-12-21 04:32:55,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:55,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 04:32:55,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:55,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 04:32:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 04:32:55,026 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 50 states, 50 states have (on average 2.24) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:55,308 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2023-12-21 04:32:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 04:32:55,309 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.24) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 04:32:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:55,309 INFO L225 Difference]: With dead ends: 113 [2023-12-21 04:32:55,309 INFO L226 Difference]: Without dead ends: 64 [2023-12-21 04:32:55,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 77 SyntacticMatches, 29 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1779 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=976, Invalid=3314, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 04:32:55,310 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:55,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-21 04:32:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-21 04:32:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2023-12-21 04:32:55,313 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2023-12-21 04:32:55,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:55,313 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2023-12-21 04:32:55,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.24) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2023-12-21 04:32:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 04:32:55,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:55,314 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1] [2023-12-21 04:32:55,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:55,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 04:32:55,514 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:55,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash 629709745, now seen corresponding path program 28 times [2023-12-21 04:32:55,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:55,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790155329] [2023-12-21 04:32:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:55,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 105 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:55,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:55,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790155329] [2023-12-21 04:32:55,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790155329] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:55,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569781381] [2023-12-21 04:32:55,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:32:55,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:55,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:55,751 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) [2023-12-21 04:32:55,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 04:32:55,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:32:55,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:55,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 04:32:55,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:55,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569781381] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:56,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:56,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2023-12-21 04:32:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859344277] [2023-12-21 04:32:56,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 04:32:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:56,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 04:32:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=259, Unknown=0, NotChecked=0, Total=420 [2023-12-21 04:32:56,125 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:56,274 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2023-12-21 04:32:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 04:32:56,274 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 04:32:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:56,274 INFO L225 Difference]: With dead ends: 75 [2023-12-21 04:32:56,274 INFO L226 Difference]: Without dead ends: 73 [2023-12-21 04:32:56,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 107 SyntacticMatches, 30 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 04:32:56,275 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:56,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-21 04:32:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2023-12-21 04:32:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2023-12-21 04:32:56,278 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2023-12-21 04:32:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:56,278 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2023-12-21 04:32:56,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2023-12-21 04:32:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 04:32:56,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:56,279 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2023-12-21 04:32:56,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-21 04:32:56,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:56,484 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:56,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:56,484 INFO L85 PathProgramCache]: Analyzing trace with hash -729315352, now seen corresponding path program 29 times [2023-12-21 04:32:56,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:56,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150139058] [2023-12-21 04:32:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:56,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 302 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:56,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:56,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150139058] [2023-12-21 04:32:56,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150139058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:56,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818374769] [2023-12-21 04:32:56,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:32:56,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:56,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:56,927 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) [2023-12-21 04:32:56,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 04:32:56,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-21 04:32:56,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:56,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 04:32:57,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:57,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:57,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818374769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:57,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:57,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 52 [2023-12-21 04:32:57,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878118071] [2023-12-21 04:32:57,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:57,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 04:32:57,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:57,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 04:32:57,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 04:32:57,684 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:57,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:57,921 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2023-12-21 04:32:57,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 04:32:57,921 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-21 04:32:57,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:57,922 INFO L225 Difference]: With dead ends: 120 [2023-12-21 04:32:57,922 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 04:32:57,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 82 SyntacticMatches, 31 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1096, Invalid=3734, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 04:32:57,923 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:57,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 182 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 04:32:57,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-21 04:32:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2023-12-21 04:32:57,926 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2023-12-21 04:32:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:57,926 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2023-12-21 04:32:57,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2023-12-21 04:32:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 04:32:57,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:57,927 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1] [2023-12-21 04:32:57,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:58,132 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,SelfDestructingSolverStorable30 [2023-12-21 04:32:58,132 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:58,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1436477133, now seen corresponding path program 30 times [2023-12-21 04:32:58,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:58,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202784354] [2023-12-21 04:32:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:58,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 120 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:58,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202784354] [2023-12-21 04:32:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202784354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909177850] [2023-12-21 04:32:58,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:32:58,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:58,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:58,396 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) [2023-12-21 04:32:58,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 04:32:58,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2023-12-21 04:32:58,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:32:58,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 04:32:58,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:32:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:58,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:32:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909177850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:32:58,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:32:58,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 21 [2023-12-21 04:32:58,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482077294] [2023-12-21 04:32:58,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:32:58,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 04:32:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:32:58,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 04:32:58,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2023-12-21 04:32:58,915 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:32:59,107 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2023-12-21 04:32:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-21 04:32:59,108 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-21 04:32:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:32:59,108 INFO L225 Difference]: With dead ends: 79 [2023-12-21 04:32:59,108 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 04:32:59,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 32 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 04:32:59,109 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:32:59,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:32:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 04:32:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2023-12-21 04:32:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-12-21 04:32:59,112 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2023-12-21 04:32:59,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:32:59,112 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-12-21 04:32:59,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:32:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-12-21 04:32:59,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 04:32:59,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:32:59,113 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1, 1, 1] [2023-12-21 04:32:59,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 04:32:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:59,313 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:32:59,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:32:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash -959047860, now seen corresponding path program 31 times [2023-12-21 04:32:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:32:59,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93301632] [2023-12-21 04:32:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:32:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:32:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:32:59,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:32:59,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93301632] [2023-12-21 04:32:59,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93301632] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:32:59,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655737746] [2023-12-21 04:32:59,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:32:59,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:32:59,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:32:59,835 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:32:59,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 04:32:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:32:59,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 04:32:59,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:00,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655737746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:00,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:00,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 55 [2023-12-21 04:33:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416290810] [2023-12-21 04:33:00,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 04:33:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 04:33:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 04:33:00,798 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 56 states, 56 states have (on average 2.25) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:01,132 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2023-12-21 04:33:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 04:33:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.25) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 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 70 [2023-12-21 04:33:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:01,132 INFO L225 Difference]: With dead ends: 127 [2023-12-21 04:33:01,132 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 04:33:01,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 87 SyntacticMatches, 33 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1223, Invalid=4179, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 04:33:01,136 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:01,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 174 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 04:33:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-12-21 04:33:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2023-12-21 04:33:01,150 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2023-12-21 04:33:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:01,150 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2023-12-21 04:33:01,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.25) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2023-12-21 04:33:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 04:33:01,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:01,150 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1] [2023-12-21 04:33:01,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-21 04:33:01,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:01,355 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:01,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 497646513, now seen corresponding path program 32 times [2023-12-21 04:33:01,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:01,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923879309] [2023-12-21 04:33:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:01,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 136 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:01,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923879309] [2023-12-21 04:33:01,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923879309] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806210603] [2023-12-21 04:33:01,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:33:01,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:01,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:01,651 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:01,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-21 04:33:01,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:33:01,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:01,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 04:33:01,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:01,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:02,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806210603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:02,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:02,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 22 [2023-12-21 04:33:02,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102914298] [2023-12-21 04:33:02,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:02,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 04:33:02,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:02,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 04:33:02,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2023-12-21 04:33:02,044 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:02,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:02,176 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2023-12-21 04:33:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 04:33:02,176 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-21 04:33:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:02,177 INFO L225 Difference]: With dead ends: 83 [2023-12-21 04:33:02,177 INFO L226 Difference]: Without dead ends: 81 [2023-12-21 04:33:02,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 34 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 04:33:02,177 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:02,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 17 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-21 04:33:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2023-12-21 04:33:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2023-12-21 04:33:02,181 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2023-12-21 04:33:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:02,181 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2023-12-21 04:33:02,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2023-12-21 04:33:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 04:33:02,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:02,185 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1] [2023-12-21 04:33:02,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:02,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-21 04:33:02,390 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:02,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash -835016728, now seen corresponding path program 33 times [2023-12-21 04:33:02,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:02,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009406636] [2023-12-21 04:33:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:02,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 393 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:02,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:02,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009406636] [2023-12-21 04:33:02,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009406636] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:02,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374657455] [2023-12-21 04:33:02,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:33:02,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:02,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:02,764 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:02,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-21 04:33:02,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-12-21 04:33:02,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:02,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 04:33:02,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:03,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:03,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374657455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:03,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:03,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 58 [2023-12-21 04:33:03,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157593509] [2023-12-21 04:33:03,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:03,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 04:33:03,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:03,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 04:33:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 04:33:03,803 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:04,186 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2023-12-21 04:33:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 04:33:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-21 04:33:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:04,186 INFO L225 Difference]: With dead ends: 134 [2023-12-21 04:33:04,186 INFO L226 Difference]: Without dead ends: 76 [2023-12-21 04:33:04,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 92 SyntacticMatches, 35 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2517 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1357, Invalid=4649, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 04:33:04,187 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:04,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 213 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-21 04:33:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-21 04:33:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2023-12-21 04:33:04,191 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2023-12-21 04:33:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:04,191 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2023-12-21 04:33:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2023-12-21 04:33:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 04:33:04,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:04,191 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1] [2023-12-21 04:33:04,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:04,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-21 04:33:04,397 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:04,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash 172708301, now seen corresponding path program 34 times [2023-12-21 04:33:04,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:04,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883757451] [2023-12-21 04:33:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:04,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 153 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:04,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883757451] [2023-12-21 04:33:04,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883757451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506888454] [2023-12-21 04:33:04,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:33:04,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:04,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:04,699 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:04,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-21 04:33:04,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:33:04,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:04,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 04:33:04,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:04,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:05,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506888454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:05,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:05,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2023-12-21 04:33:05,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072540441] [2023-12-21 04:33:05,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:05,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 04:33:05,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 04:33:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2023-12-21 04:33:05,250 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:05,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:05,468 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2023-12-21 04:33:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 04:33:05,468 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 04:33:05,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:05,468 INFO L225 Difference]: With dead ends: 87 [2023-12-21 04:33:05,468 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 04:33:05,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 128 SyntacticMatches, 36 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 04:33:05,469 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:05,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 23 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 04:33:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2023-12-21 04:33:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2023-12-21 04:33:05,472 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 75 [2023-12-21 04:33:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:05,473 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2023-12-21 04:33:05,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2023-12-21 04:33:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 04:33:05,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:05,473 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1] [2023-12-21 04:33:05,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:05,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-21 04:33:05,674 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:05,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash -213005236, now seen corresponding path program 35 times [2023-12-21 04:33:05,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:05,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368093603] [2023-12-21 04:33:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:05,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 443 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:06,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:06,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368093603] [2023-12-21 04:33:06,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368093603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:06,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599689500] [2023-12-21 04:33:06,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:33:06,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:06,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:06,279 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:06,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-21 04:33:06,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-12-21 04:33:06,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:06,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 04:33:06,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:06,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:07,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599689500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:07,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:07,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 61 [2023-12-21 04:33:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420739824] [2023-12-21 04:33:07,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:07,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-21 04:33:07,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-21 04:33:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 04:33:07,443 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 62 states, 62 states have (on average 2.2580645161290325) internal successors, (140), 61 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:07,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:07,804 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2023-12-21 04:33:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 04:33:07,804 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.2580645161290325) internal successors, (140), 61 states have internal predecessors, (140), 0 states have call successors, (0), 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 78 [2023-12-21 04:33:07,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:07,805 INFO L225 Difference]: With dead ends: 141 [2023-12-21 04:33:07,805 INFO L226 Difference]: Without dead ends: 80 [2023-12-21 04:33:07,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 97 SyntacticMatches, 37 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2791 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1498, Invalid=5144, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 04:33:07,806 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:07,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 166 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-21 04:33:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-21 04:33:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:07,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2023-12-21 04:33:07,809 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 78 [2023-12-21 04:33:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:07,810 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2023-12-21 04:33:07,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.2580645161290325) internal successors, (140), 61 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:07,810 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2023-12-21 04:33:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 04:33:07,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:07,810 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1] [2023-12-21 04:33:07,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-21 04:33:08,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:08,015 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:08,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 24968113, now seen corresponding path program 36 times [2023-12-21 04:33:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700152893] [2023-12-21 04:33:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 171 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:08,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:08,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700152893] [2023-12-21 04:33:08,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700152893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:08,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184288192] [2023-12-21 04:33:08,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:33:08,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:08,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:08,346 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:08,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-21 04:33:08,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-21 04:33:08,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:08,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 04:33:08,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:08,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:08,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184288192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:08,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:08,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 24 [2023-12-21 04:33:08,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431648611] [2023-12-21 04:33:08,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:08,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 04:33:08,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:08,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 04:33:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2023-12-21 04:33:08,811 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:08,964 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2023-12-21 04:33:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 04:33:08,964 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 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 79 [2023-12-21 04:33:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:08,964 INFO L225 Difference]: With dead ends: 91 [2023-12-21 04:33:08,964 INFO L226 Difference]: Without dead ends: 89 [2023-12-21 04:33:08,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 135 SyntacticMatches, 38 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 04:33:08,965 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:08,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 19 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-21 04:33:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2023-12-21 04:33:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2023-12-21 04:33:08,969 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2023-12-21 04:33:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:08,969 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2023-12-21 04:33:08,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2023-12-21 04:33:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 04:33:08,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:08,969 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1] [2023-12-21 04:33:08,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-21 04:33:09,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 04:33:09,174 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:09,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash 800532456, now seen corresponding path program 37 times [2023-12-21 04:33:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:09,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098493062] [2023-12-21 04:33:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 496 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:09,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:09,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098493062] [2023-12-21 04:33:09,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098493062] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:09,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716621405] [2023-12-21 04:33:09,665 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:33:09,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:09,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:09,666 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:09,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-21 04:33:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:09,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 04:33:09,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:10,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:10,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716621405] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:10,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:10,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 64 [2023-12-21 04:33:10,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456958829] [2023-12-21 04:33:10,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:10,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 04:33:10,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:10,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 04:33:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 04:33:10,517 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 65 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 64 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:10,887 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2023-12-21 04:33:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 04:33:10,888 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 64 states have internal predecessors, (147), 0 states have call successors, (0), 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 82 [2023-12-21 04:33:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:10,888 INFO L225 Difference]: With dead ends: 148 [2023-12-21 04:33:10,888 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 04:33:10,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 102 SyntacticMatches, 39 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1646, Invalid=5664, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 04:33:10,889 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:10,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 251 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 04:33:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-21 04:33:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2023-12-21 04:33:10,893 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2023-12-21 04:33:10,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:10,893 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2023-12-21 04:33:10,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 64 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2023-12-21 04:33:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 04:33:10,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:10,894 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1] [2023-12-21 04:33:10,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:11,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-21 04:33:11,099 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:11,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash 709237965, now seen corresponding path program 38 times [2023-12-21 04:33:11,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:11,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074245007] [2023-12-21 04:33:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:11,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 190 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:11,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:11,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074245007] [2023-12-21 04:33:11,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074245007] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:11,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706563113] [2023-12-21 04:33:11,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:33:11,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:11,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:11,465 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:11,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-21 04:33:11,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:33:11,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:11,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 04:33:11,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:11,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:12,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706563113] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:12,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:12,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2023-12-21 04:33:12,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329106475] [2023-12-21 04:33:12,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:12,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 04:33:12,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 04:33:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2023-12-21 04:33:12,001 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:12,183 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2023-12-21 04:33:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-21 04:33:12,183 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 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 83 [2023-12-21 04:33:12,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:12,185 INFO L225 Difference]: With dead ends: 95 [2023-12-21 04:33:12,185 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 04:33:12,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 142 SyntacticMatches, 40 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 04:33:12,191 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:12,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 21 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 04:33:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2023-12-21 04:33:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2023-12-21 04:33:12,201 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 83 [2023-12-21 04:33:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:12,201 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2023-12-21 04:33:12,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2023-12-21 04:33:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 04:33:12,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:12,202 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1, 1, 1] [2023-12-21 04:33:12,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:12,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 04:33:12,407 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:12,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1968906572, now seen corresponding path program 39 times [2023-12-21 04:33:12,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:12,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645586941] [2023-12-21 04:33:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:12,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 552 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:13,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:13,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645586941] [2023-12-21 04:33:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645586941] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:13,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441337197] [2023-12-21 04:33:13,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:33:13,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:13,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:13,055 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:13,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-21 04:33:13,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-12-21 04:33:13,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:13,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 04:33:13,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:13,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:14,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441337197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:14,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:14,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 67 [2023-12-21 04:33:14,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013709989] [2023-12-21 04:33:14,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:14,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-21 04:33:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-21 04:33:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 04:33:14,424 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 68 states, 68 states have (on average 2.264705882352941) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:14,909 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2023-12-21 04:33:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 04:33:14,910 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.264705882352941) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 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 86 [2023-12-21 04:33:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:14,910 INFO L225 Difference]: With dead ends: 155 [2023-12-21 04:33:14,910 INFO L226 Difference]: Without dead ends: 88 [2023-12-21 04:33:14,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 107 SyntacticMatches, 41 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3381 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1801, Invalid=6209, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 04:33:14,911 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:14,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 230 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-21 04:33:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-21 04:33:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2023-12-21 04:33:14,923 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2023-12-21 04:33:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:14,923 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2023-12-21 04:33:14,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.264705882352941) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2023-12-21 04:33:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 04:33:14,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:14,923 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1] [2023-12-21 04:33:14,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:15,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-21 04:33:15,124 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:15,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash -202695759, now seen corresponding path program 40 times [2023-12-21 04:33:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:15,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230800460] [2023-12-21 04:33:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 210 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:15,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:15,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230800460] [2023-12-21 04:33:15,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230800460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:15,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137035295] [2023-12-21 04:33:15,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:33:15,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:15,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:15,515 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:15,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-21 04:33:15,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:33:15,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:15,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 04:33:15,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:15,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:16,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137035295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:16,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:16,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2023-12-21 04:33:16,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104765718] [2023-12-21 04:33:16,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:16,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 04:33:16,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:16,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 04:33:16,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2023-12-21 04:33:16,048 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:16,304 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2023-12-21 04:33:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 04:33:16,304 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 04:33:16,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:16,305 INFO L225 Difference]: With dead ends: 99 [2023-12-21 04:33:16,305 INFO L226 Difference]: Without dead ends: 97 [2023-12-21 04:33:16,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 149 SyntacticMatches, 42 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 04:33:16,305 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:16,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-21 04:33:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2023-12-21 04:33:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2023-12-21 04:33:16,310 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 87 [2023-12-21 04:33:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:16,310 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2023-12-21 04:33:16,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2023-12-21 04:33:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 04:33:16,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:16,310 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1] [2023-12-21 04:33:16,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:16,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:16,515 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:16,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash 219482088, now seen corresponding path program 41 times [2023-12-21 04:33:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085937903] [2023-12-21 04:33:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:16,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 611 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:17,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085937903] [2023-12-21 04:33:17,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085937903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:17,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242549191] [2023-12-21 04:33:17,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:33:17,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:17,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:17,067 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:17,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-21 04:33:17,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-12-21 04:33:17,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:17,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 04:33:17,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:17,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242549191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:18,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:18,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 70 [2023-12-21 04:33:18,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484565863] [2023-12-21 04:33:18,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-21 04:33:18,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:18,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-21 04:33:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 04:33:18,621 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 70 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:19,056 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2023-12-21 04:33:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 04:33:19,057 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 70 states have internal predecessors, (161), 0 states have call successors, (0), 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 90 [2023-12-21 04:33:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:19,057 INFO L225 Difference]: With dead ends: 162 [2023-12-21 04:33:19,057 INFO L226 Difference]: Without dead ends: 92 [2023-12-21 04:33:19,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 112 SyntacticMatches, 43 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3697 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1963, Invalid=6779, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 04:33:19,058 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:19,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 285 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:33:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-21 04:33:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-21 04:33:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2023-12-21 04:33:19,062 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2023-12-21 04:33:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:19,063 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2023-12-21 04:33:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 70 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2023-12-21 04:33:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 04:33:19,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:19,063 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1] [2023-12-21 04:33:19,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:19,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:19,264 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:19,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1957119949, now seen corresponding path program 42 times [2023-12-21 04:33:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:19,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930765048] [2023-12-21 04:33:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:19,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 231 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:19,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930765048] [2023-12-21 04:33:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930765048] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364695506] [2023-12-21 04:33:19,675 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:33:19,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:19,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:19,676 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:19,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-21 04:33:19,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-21 04:33:19,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:19,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 04:33:19,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:19,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:20,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364695506] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:20,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:20,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 27 [2023-12-21 04:33:20,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86497369] [2023-12-21 04:33:20,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:20,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 04:33:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 04:33:20,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2023-12-21 04:33:20,297 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:20,499 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2023-12-21 04:33:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 04:33:20,500 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 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 91 [2023-12-21 04:33:20,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:20,500 INFO L225 Difference]: With dead ends: 103 [2023-12-21 04:33:20,500 INFO L226 Difference]: Without dead ends: 101 [2023-12-21 04:33:20,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 156 SyntacticMatches, 44 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 04:33:20,501 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:20,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-21 04:33:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2023-12-21 04:33:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2023-12-21 04:33:20,507 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2023-12-21 04:33:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:20,507 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2023-12-21 04:33:20,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2023-12-21 04:33:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 04:33:20,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:20,508 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2023-12-21 04:33:20,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:20,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-21 04:33:20,713 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:20,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:20,714 INFO L85 PathProgramCache]: Analyzing trace with hash 384177740, now seen corresponding path program 43 times [2023-12-21 04:33:20,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:20,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527407379] [2023-12-21 04:33:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:20,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 673 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:21,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:21,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527407379] [2023-12-21 04:33:21,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527407379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:21,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721509225] [2023-12-21 04:33:21,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:33:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:21,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:21,298 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:21,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-21 04:33:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:21,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 04:33:21,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:21,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:22,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721509225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:22,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 73 [2023-12-21 04:33:22,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617198185] [2023-12-21 04:33:22,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:22,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 04:33:22,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:22,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 04:33:22,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 04:33:22,338 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 74 states, 74 states have (on average 2.27027027027027) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:22,690 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2023-12-21 04:33:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 04:33:22,691 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.27027027027027) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 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 94 [2023-12-21 04:33:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:22,691 INFO L225 Difference]: With dead ends: 169 [2023-12-21 04:33:22,691 INFO L226 Difference]: Without dead ends: 96 [2023-12-21 04:33:22,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 117 SyntacticMatches, 45 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4027 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2132, Invalid=7374, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 04:33:22,693 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:22,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 208 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-21 04:33:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-21 04:33:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2023-12-21 04:33:22,697 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2023-12-21 04:33:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:22,697 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2023-12-21 04:33:22,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.27027027027027) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2023-12-21 04:33:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 04:33:22,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:22,698 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1] [2023-12-21 04:33:22,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:22,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-21 04:33:22,903 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:22,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash -371467343, now seen corresponding path program 44 times [2023-12-21 04:33:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:22,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289603716] [2023-12-21 04:33:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:22,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 253 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:23,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:23,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289603716] [2023-12-21 04:33:23,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289603716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:23,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34638191] [2023-12-21 04:33:23,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:33:23,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:23,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:23,351 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:23,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-21 04:33:23,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:33:23,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:23,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 04:33:23,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:23,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:24,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34638191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:24,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:24,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 28 [2023-12-21 04:33:24,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072251888] [2023-12-21 04:33:24,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:24,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 04:33:24,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 04:33:24,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2023-12-21 04:33:24,001 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:24,280 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2023-12-21 04:33:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 04:33:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 04:33:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:24,281 INFO L225 Difference]: With dead ends: 107 [2023-12-21 04:33:24,281 INFO L226 Difference]: Without dead ends: 105 [2023-12-21 04:33:24,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 163 SyntacticMatches, 46 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 04:33:24,282 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:24,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 21 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:24,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-21 04:33:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2023-12-21 04:33:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2023-12-21 04:33:24,286 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 95 [2023-12-21 04:33:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:24,287 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2023-12-21 04:33:24,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2023-12-21 04:33:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 04:33:24,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:24,287 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1, 1, 1] [2023-12-21 04:33:24,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:24,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-21 04:33:24,492 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:24,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1751926760, now seen corresponding path program 45 times [2023-12-21 04:33:24,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:24,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48406509] [2023-12-21 04:33:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:24,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 738 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:25,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:25,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48406509] [2023-12-21 04:33:25,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48406509] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:25,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011643559] [2023-12-21 04:33:25,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:33:25,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:25,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:25,382 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:25,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-21 04:33:25,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-12-21 04:33:25,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:25,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 04:33:25,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:26,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011643559] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:26,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:26,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2023-12-21 04:33:26,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030829473] [2023-12-21 04:33:26,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-21 04:33:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-21 04:33:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 04:33:26,717 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 77 states, 77 states have (on average 2.272727272727273) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:27,140 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2023-12-21 04:33:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 04:33:27,140 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.272727272727273) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 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 98 [2023-12-21 04:33:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:27,141 INFO L225 Difference]: With dead ends: 176 [2023-12-21 04:33:27,141 INFO L226 Difference]: Without dead ends: 100 [2023-12-21 04:33:27,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 122 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2308, Invalid=7994, Unknown=0, NotChecked=0, Total=10302 [2023-12-21 04:33:27,143 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:27,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 338 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-21 04:33:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-21 04:33:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2023-12-21 04:33:27,162 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2023-12-21 04:33:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:27,162 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2023-12-21 04:33:27,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.272727272727273) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2023-12-21 04:33:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 04:33:27,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:27,169 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1] [2023-12-21 04:33:27,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:27,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:27,374 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:27,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:27,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1769549107, now seen corresponding path program 46 times [2023-12-21 04:33:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:27,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166431667] [2023-12-21 04:33:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:27,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 276 proven. 829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:27,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166431667] [2023-12-21 04:33:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166431667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:27,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261786589] [2023-12-21 04:33:27,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:33:27,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:27,796 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:27,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-21 04:33:27,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:33:27,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:27,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 04:33:27,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:27,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261786589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:28,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:28,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2023-12-21 04:33:28,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647957877] [2023-12-21 04:33:28,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:28,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 04:33:28,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:28,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 04:33:28,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=511, Unknown=0, NotChecked=0, Total=870 [2023-12-21 04:33:28,294 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:28,617 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2023-12-21 04:33:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-21 04:33:28,617 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 04:33:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:28,618 INFO L225 Difference]: With dead ends: 111 [2023-12-21 04:33:28,618 INFO L226 Difference]: Without dead ends: 109 [2023-12-21 04:33:28,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 170 SyntacticMatches, 48 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 04:33:28,618 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:28,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 32 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-21 04:33:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-12-21 04:33:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2023-12-21 04:33:28,624 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 99 [2023-12-21 04:33:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:28,624 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2023-12-21 04:33:28,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2023-12-21 04:33:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 04:33:28,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:28,625 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1, 1, 1] [2023-12-21 04:33:28,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-12-21 04:33:28,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-21 04:33:28,830 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:28,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:28,830 INFO L85 PathProgramCache]: Analyzing trace with hash -204035252, now seen corresponding path program 47 times [2023-12-21 04:33:28,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:28,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326324450] [2023-12-21 04:33:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:28,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 806 proven. 370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:29,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:29,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326324450] [2023-12-21 04:33:29,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326324450] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:29,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430173285] [2023-12-21 04:33:29,556 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:33:29,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:29,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:29,557 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:29,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-21 04:33:29,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-21 04:33:29,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:29,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 04:33:29,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:30,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:30,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430173285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:30,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:30,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 79 [2023-12-21 04:33:30,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450872241] [2023-12-21 04:33:30,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:30,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-21 04:33:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-21 04:33:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 04:33:30,776 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 80 states, 80 states have (on average 2.275) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:31,441 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2023-12-21 04:33:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 04:33:31,441 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.275) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 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 102 [2023-12-21 04:33:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:31,442 INFO L225 Difference]: With dead ends: 183 [2023-12-21 04:33:31,442 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 04:33:31,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 127 SyntacticMatches, 49 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4729 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2491, Invalid=8639, Unknown=0, NotChecked=0, Total=11130 [2023-12-21 04:33:31,443 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:31,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 320 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:33:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 04:33:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-21 04:33:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2023-12-21 04:33:31,448 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2023-12-21 04:33:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:31,448 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2023-12-21 04:33:31,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.275) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2023-12-21 04:33:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 04:33:31,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:31,448 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1] [2023-12-21 04:33:31,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:31,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-21 04:33:31,653 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:31,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash 708262833, now seen corresponding path program 48 times [2023-12-21 04:33:31,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:31,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083351397] [2023-12-21 04:33:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:31,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 300 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:32,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083351397] [2023-12-21 04:33:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083351397] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:32,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239167931] [2023-12-21 04:33:32,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:33:32,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:32,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:32,121 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:32,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-21 04:33:32,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-12-21 04:33:32,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:32,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 04:33:32,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:32,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:32,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239167931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:32,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:32,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 30 [2023-12-21 04:33:32,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530235482] [2023-12-21 04:33:32,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:32,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 04:33:32,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 04:33:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2023-12-21 04:33:32,826 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:33,132 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2023-12-21 04:33:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 04:33:33,132 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-21 04:33:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:33,132 INFO L225 Difference]: With dead ends: 115 [2023-12-21 04:33:33,133 INFO L226 Difference]: Without dead ends: 113 [2023-12-21 04:33:33,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 177 SyntacticMatches, 50 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 04:33:33,133 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:33,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-21 04:33:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2023-12-21 04:33:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2023-12-21 04:33:33,138 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2023-12-21 04:33:33,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:33,139 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2023-12-21 04:33:33,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:33,139 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2023-12-21 04:33:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 04:33:33,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:33,139 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1, 1, 1] [2023-12-21 04:33:33,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-21 04:33:33,340 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:33,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1311447064, now seen corresponding path program 49 times [2023-12-21 04:33:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:33,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774817227] [2023-12-21 04:33:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:33,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 877 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:34,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:34,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774817227] [2023-12-21 04:33:34,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774817227] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:34,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501840193] [2023-12-21 04:33:34,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:33:34,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:34,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:34,200 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:34,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-21 04:33:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:34,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 04:33:34,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:34,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:35,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501840193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:35,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:35,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 82 [2023-12-21 04:33:35,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863610106] [2023-12-21 04:33:35,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:35,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-21 04:33:35,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:35,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-21 04:33:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 04:33:35,661 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 83 states, 83 states have (on average 2.2771084337349397) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:36,337 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2023-12-21 04:33:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 04:33:36,337 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.2771084337349397) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 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 106 [2023-12-21 04:33:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:36,337 INFO L225 Difference]: With dead ends: 190 [2023-12-21 04:33:36,337 INFO L226 Difference]: Without dead ends: 108 [2023-12-21 04:33:36,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 132 SyntacticMatches, 51 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5101 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2681, Invalid=9309, Unknown=0, NotChecked=0, Total=11990 [2023-12-21 04:33:36,339 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:36,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 265 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:33:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-21 04:33:36,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-21 04:33:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2023-12-21 04:33:36,344 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2023-12-21 04:33:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:36,344 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2023-12-21 04:33:36,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.2771084337349397) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:36,345 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2023-12-21 04:33:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 04:33:36,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:36,345 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1] [2023-12-21 04:33:36,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-12-21 04:33:36,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-12-21 04:33:36,550 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:36,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1426276915, now seen corresponding path program 50 times [2023-12-21 04:33:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:36,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329064509] [2023-12-21 04:33:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:36,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 325 proven. 976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:37,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:37,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329064509] [2023-12-21 04:33:37,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329064509] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:37,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254084788] [2023-12-21 04:33:37,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:33:37,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:37,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:37,099 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:37,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-21 04:33:37,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:33:37,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:37,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 04:33:37,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:37,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:37,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254084788] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:37,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:37,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 31 [2023-12-21 04:33:37,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490711909] [2023-12-21 04:33:37,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:37,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 04:33:37,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:37,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 04:33:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2023-12-21 04:33:37,867 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:38,198 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2023-12-21 04:33:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-21 04:33:38,198 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-21 04:33:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:38,199 INFO L225 Difference]: With dead ends: 119 [2023-12-21 04:33:38,199 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 04:33:38,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 184 SyntacticMatches, 52 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1580 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1250, Invalid=2172, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 04:33:38,199 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 58 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:38,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 19 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 04:33:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2023-12-21 04:33:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2023-12-21 04:33:38,205 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 107 [2023-12-21 04:33:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:38,205 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2023-12-21 04:33:38,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2023-12-21 04:33:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 04:33:38,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:38,205 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1] [2023-12-21 04:33:38,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:38,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:38,406 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:38,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash -99295156, now seen corresponding path program 51 times [2023-12-21 04:33:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:38,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025817904] [2023-12-21 04:33:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 951 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:39,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:39,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025817904] [2023-12-21 04:33:39,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025817904] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:39,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885792511] [2023-12-21 04:33:39,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:33:39,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:39,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:39,493 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:39,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-12-21 04:33:39,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-12-21 04:33:39,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:39,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 04:33:39,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:40,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885792511] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:41,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:41,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 85 [2023-12-21 04:33:41,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821082206] [2023-12-21 04:33:41,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:41,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-21 04:33:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-21 04:33:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 04:33:41,040 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 86 states, 86 states have (on average 2.2790697674418605) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:41,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:41,525 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2023-12-21 04:33:41,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 04:33:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.2790697674418605) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-21 04:33:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:41,526 INFO L225 Difference]: With dead ends: 197 [2023-12-21 04:33:41,526 INFO L226 Difference]: Without dead ends: 112 [2023-12-21 04:33:41,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 137 SyntacticMatches, 53 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5487 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2878, Invalid=10004, Unknown=0, NotChecked=0, Total=12882 [2023-12-21 04:33:41,527 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:41,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 341 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-21 04:33:41,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-21 04:33:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2023-12-21 04:33:41,533 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2023-12-21 04:33:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:41,533 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2023-12-21 04:33:41,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.2790697674418605) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:41,533 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2023-12-21 04:33:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 04:33:41,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:41,534 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1] [2023-12-21 04:33:41,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:41,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-12-21 04:33:41,739 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:41,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash -840614991, now seen corresponding path program 52 times [2023-12-21 04:33:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179926416] [2023-12-21 04:33:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 351 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:42,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179926416] [2023-12-21 04:33:42,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179926416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735561331] [2023-12-21 04:33:42,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:33:42,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:42,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:42,201 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:42,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-12-21 04:33:42,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:33:42,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:42,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-21 04:33:42,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:42,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:42,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735561331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:42,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:42,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 32 [2023-12-21 04:33:42,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643692631] [2023-12-21 04:33:42,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:42,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 04:33:42,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:42,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 04:33:42,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=613, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 04:33:42,934 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:43,160 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2023-12-21 04:33:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-21 04:33:43,161 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-21 04:33:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:43,161 INFO L225 Difference]: With dead ends: 123 [2023-12-21 04:33:43,161 INFO L226 Difference]: Without dead ends: 121 [2023-12-21 04:33:43,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 191 SyntacticMatches, 54 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1338, Invalid=2322, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 04:33:43,162 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:43,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 21 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-21 04:33:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2023-12-21 04:33:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2023-12-21 04:33:43,171 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 111 [2023-12-21 04:33:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:43,171 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2023-12-21 04:33:43,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2023-12-21 04:33:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 04:33:43,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:43,172 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 1, 1, 1, 1, 1] [2023-12-21 04:33:43,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:43,377 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:43,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1197926376, now seen corresponding path program 53 times [2023-12-21 04:33:43,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:43,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541062871] [2023-12-21 04:33:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:43,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1028 proven. 457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541062871] [2023-12-21 04:33:44,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541062871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689841834] [2023-12-21 04:33:44,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:33:44,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:44,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:44,431 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:44,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-21 04:33:44,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2023-12-21 04:33:44,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:44,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 04:33:44,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:45,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:46,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689841834] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:46,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 88 [2023-12-21 04:33:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6070794] [2023-12-21 04:33:46,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:46,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-21 04:33:46,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:46,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-21 04:33:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 04:33:46,160 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 89 states, 89 states have (on average 2.2808988764044944) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:46,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:46,891 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2023-12-21 04:33:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 04:33:46,891 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.2808988764044944) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-21 04:33:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:46,892 INFO L225 Difference]: With dead ends: 204 [2023-12-21 04:33:46,892 INFO L226 Difference]: Without dead ends: 116 [2023-12-21 04:33:46,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 142 SyntacticMatches, 55 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5887 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3082, Invalid=10724, Unknown=0, NotChecked=0, Total=13806 [2023-12-21 04:33:46,893 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:46,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 442 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:33:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-21 04:33:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-21 04:33:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2023-12-21 04:33:46,899 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 114 [2023-12-21 04:33:46,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:46,899 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2023-12-21 04:33:46,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.2808988764044944) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2023-12-21 04:33:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 04:33:46,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:46,899 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1] [2023-12-21 04:33:46,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:47,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:47,105 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:47,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1155462963, now seen corresponding path program 54 times [2023-12-21 04:33:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322975223] [2023-12-21 04:33:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 378 proven. 1135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:47,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322975223] [2023-12-21 04:33:47,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322975223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:47,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408004313] [2023-12-21 04:33:47,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:33:47,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:47,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:47,727 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:47,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-12-21 04:33:47,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-12-21 04:33:47,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:47,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 04:33:47,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:47,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:48,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408004313] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:48,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:48,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 33 [2023-12-21 04:33:48,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916691519] [2023-12-21 04:33:48,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:48,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 04:33:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 04:33:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 04:33:48,332 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 34 states, 34 states have (on average 3.5) internal successors, (119), 33 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:48,696 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2023-12-21 04:33:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 04:33:48,696 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 33 states have internal predecessors, (119), 0 states have call successors, (0), 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 115 [2023-12-21 04:33:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:48,697 INFO L225 Difference]: With dead ends: 127 [2023-12-21 04:33:48,697 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 04:33:48,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 198 SyntacticMatches, 56 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1429, Invalid=2477, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 04:33:48,698 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 62 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:48,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 25 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 04:33:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2023-12-21 04:33:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2023-12-21 04:33:48,704 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2023-12-21 04:33:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:48,704 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2023-12-21 04:33:48,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 33 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2023-12-21 04:33:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 04:33:48,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:48,705 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 1, 1, 1, 1, 1] [2023-12-21 04:33:48,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:48,911 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:48,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1770566988, now seen corresponding path program 55 times [2023-12-21 04:33:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:48,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567302014] [2023-12-21 04:33:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1108 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:50,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:50,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567302014] [2023-12-21 04:33:50,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567302014] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:50,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874745472] [2023-12-21 04:33:50,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:33:50,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:50,142 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:50,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-12-21 04:33:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:50,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-21 04:33:50,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:51,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:52,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874745472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:52,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:52,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2023-12-21 04:33:52,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683173220] [2023-12-21 04:33:52,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:52,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-12-21 04:33:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:52,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-12-21 04:33:52,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2023-12-21 04:33:52,252 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 92 states, 92 states have (on average 2.282608695652174) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:52,968 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2023-12-21 04:33:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 04:33:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.282608695652174) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 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 118 [2023-12-21 04:33:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:52,969 INFO L225 Difference]: With dead ends: 211 [2023-12-21 04:33:52,969 INFO L226 Difference]: Without dead ends: 120 [2023-12-21 04:33:52,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 147 SyntacticMatches, 57 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6301 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3293, Invalid=11469, Unknown=0, NotChecked=0, Total=14762 [2023-12-21 04:33:52,970 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:52,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 274 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:33:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-21 04:33:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-21 04:33:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2023-12-21 04:33:52,990 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2023-12-21 04:33:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:52,990 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2023-12-21 04:33:52,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.282608695652174) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2023-12-21 04:33:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 04:33:52,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:52,991 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1] [2023-12-21 04:33:52,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:53,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:53,191 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:53,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1070455729, now seen corresponding path program 56 times [2023-12-21 04:33:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:53,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830809200] [2023-12-21 04:33:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:53,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 406 proven. 1219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:53,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830809200] [2023-12-21 04:33:53,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830809200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337003140] [2023-12-21 04:33:53,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:33:53,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:53,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:53,800 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:53,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-12-21 04:33:53,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:33:53,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:53,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 04:33:53,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:53,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:54,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337003140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:54,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 34 [2023-12-21 04:33:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648095374] [2023-12-21 04:33:54,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:54,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 04:33:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 04:33:54,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 04:33:54,582 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 34 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:54,902 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2023-12-21 04:33:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 04:33:54,902 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 34 states have internal predecessors, (123), 0 states have call successors, (0), 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 119 [2023-12-21 04:33:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:54,903 INFO L225 Difference]: With dead ends: 131 [2023-12-21 04:33:54,903 INFO L226 Difference]: Without dead ends: 129 [2023-12-21 04:33:54,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 205 SyntacticMatches, 58 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1523, Invalid=2637, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 04:33:54,903 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 66 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:54,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 27 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:33:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-21 04:33:54,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2023-12-21 04:33:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2023-12-21 04:33:54,929 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 119 [2023-12-21 04:33:54,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:54,929 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2023-12-21 04:33:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 34 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2023-12-21 04:33:54,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 04:33:54,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:54,930 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 1, 1, 1, 1, 1] [2023-12-21 04:33:54,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-12-21 04:33:55,135 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:55,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash -180729880, now seen corresponding path program 57 times [2023-12-21 04:33:55,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:55,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277067181] [2023-12-21 04:33:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:55,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1191 proven. 520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:56,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:56,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277067181] [2023-12-21 04:33:56,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277067181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:56,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934694310] [2023-12-21 04:33:56,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:33:56,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:56,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:56,211 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:56,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-12-21 04:33:56,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2023-12-21 04:33:56,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:56,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 04:33:56,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:57,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:33:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:57,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934694310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:33:57,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:33:57,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 94 [2023-12-21 04:33:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415829205] [2023-12-21 04:33:57,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:33:57,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-12-21 04:33:57,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:33:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-12-21 04:33:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 04:33:57,997 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 95 states, 95 states have (on average 2.2842105263157895) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:58,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:33:58,622 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2023-12-21 04:33:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 04:33:58,622 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.2842105263157895) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 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 122 [2023-12-21 04:33:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:33:58,623 INFO L225 Difference]: With dead ends: 218 [2023-12-21 04:33:58,623 INFO L226 Difference]: Without dead ends: 124 [2023-12-21 04:33:58,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 152 SyntacticMatches, 59 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6729 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3511, Invalid=12239, Unknown=0, NotChecked=0, Total=15750 [2023-12-21 04:33:58,624 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:33:58,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 282 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:33:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-21 04:33:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-21 04:33:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2023-12-21 04:33:58,631 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2023-12-21 04:33:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:33:58,631 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2023-12-21 04:33:58,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.2842105263157895) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:33:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2023-12-21 04:33:58,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 04:33:58,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:33:58,631 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1] [2023-12-21 04:33:58,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-12-21 04:33:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-21 04:33:58,837 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:33:58,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:33:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1040954317, now seen corresponding path program 58 times [2023-12-21 04:33:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:33:58,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267781614] [2023-12-21 04:33:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:33:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:33:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:33:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 435 proven. 1306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:59,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:33:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267781614] [2023-12-21 04:33:59,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267781614] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:33:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490111095] [2023-12-21 04:33:59,417 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:33:59,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:33:59,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:33:59,420 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:33:59,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-12-21 04:33:59,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:33:59,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:33:59,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 04:33:59,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:33:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:33:59,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490111095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:00,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2023-12-21 04:34:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891020158] [2023-12-21 04:34:00,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 04:34:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 04:34:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=724, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 04:34:00,196 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 36 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:00,460 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2023-12-21 04:34:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-21 04:34:00,460 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 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 123 [2023-12-21 04:34:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:00,461 INFO L225 Difference]: With dead ends: 135 [2023-12-21 04:34:00,461 INFO L226 Difference]: Without dead ends: 133 [2023-12-21 04:34:00,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 212 SyntacticMatches, 60 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1620, Invalid=2802, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 04:34:00,462 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:00,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 21 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-21 04:34:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2023-12-21 04:34:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2023-12-21 04:34:00,469 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 123 [2023-12-21 04:34:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:00,469 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2023-12-21 04:34:00,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2023-12-21 04:34:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 04:34:00,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:00,469 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1] [2023-12-21 04:34:00,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:00,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-21 04:34:00,675 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:00,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:00,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1411000908, now seen corresponding path program 59 times [2023-12-21 04:34:00,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:00,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306999739] [2023-12-21 04:34:00,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:00,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1277 proven. 553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:01,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306999739] [2023-12-21 04:34:01,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306999739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:01,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955243656] [2023-12-21 04:34:01,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:34:01,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:01,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:01,745 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:01,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-12-21 04:34:01,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2023-12-21 04:34:01,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:01,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 04:34:01,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:02,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955243656] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:03,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:03,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 97 [2023-12-21 04:34:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434517811] [2023-12-21 04:34:03,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:03,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-21 04:34:03,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-21 04:34:03,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 04:34:03,542 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 98 states, 98 states have (on average 2.2857142857142856) internal successors, (224), 97 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:04,133 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2023-12-21 04:34:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 04:34:04,134 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.2857142857142856) internal successors, (224), 97 states have internal predecessors, (224), 0 states have call successors, (0), 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 126 [2023-12-21 04:34:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:04,134 INFO L225 Difference]: With dead ends: 225 [2023-12-21 04:34:04,134 INFO L226 Difference]: Without dead ends: 128 [2023-12-21 04:34:04,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 157 SyntacticMatches, 61 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7171 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3736, Invalid=13034, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 04:34:04,136 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:04,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 271 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-21 04:34:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-12-21 04:34:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2023-12-21 04:34:04,143 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 126 [2023-12-21 04:34:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:04,143 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2023-12-21 04:34:04,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.2857142857142856) internal successors, (224), 97 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:04,143 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2023-12-21 04:34:04,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 04:34:04,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:04,143 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1] [2023-12-21 04:34:04,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:04,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:04,349 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:04,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1126622287, now seen corresponding path program 60 times [2023-12-21 04:34:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:04,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065450828] [2023-12-21 04:34:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 465 proven. 1396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:04,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:04,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065450828] [2023-12-21 04:34:04,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065450828] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:04,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377236516] [2023-12-21 04:34:04,935 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:34:04,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:04,936 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:04,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-12-21 04:34:05,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2023-12-21 04:34:05,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:05,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 04:34:05,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:05,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:05,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377236516] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:05,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:05,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 36 [2023-12-21 04:34:05,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647117413] [2023-12-21 04:34:05,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:05,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 04:34:05,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 04:34:05,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 04:34:05,707 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 36 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:06,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:06,006 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2023-12-21 04:34:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 04:34:06,007 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 36 states have internal predecessors, (131), 0 states have call successors, (0), 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 127 [2023-12-21 04:34:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:06,007 INFO L225 Difference]: With dead ends: 139 [2023-12-21 04:34:06,007 INFO L226 Difference]: Without dead ends: 137 [2023-12-21 04:34:06,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 219 SyntacticMatches, 62 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2195 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1720, Invalid=2972, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 04:34:06,008 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 68 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:06,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 23 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-21 04:34:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2023-12-21 04:34:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2023-12-21 04:34:06,015 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 127 [2023-12-21 04:34:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:06,015 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2023-12-21 04:34:06,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 36 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2023-12-21 04:34:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 04:34:06,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:06,016 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1, 1] [2023-12-21 04:34:06,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:06,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:06,222 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:06,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1969686504, now seen corresponding path program 61 times [2023-12-21 04:34:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:06,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061763299] [2023-12-21 04:34:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1366 proven. 587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061763299] [2023-12-21 04:34:07,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061763299] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380074167] [2023-12-21 04:34:07,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:34:07,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:07,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:07,323 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:07,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-12-21 04:34:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:07,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 04:34:07,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:08,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:09,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380074167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:09,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:09,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 100 [2023-12-21 04:34:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186486173] [2023-12-21 04:34:09,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:09,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-21 04:34:09,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-21 04:34:09,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 04:34:09,144 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 101 states, 101 states have (on average 2.287128712871287) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:09,776 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2023-12-21 04:34:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 04:34:09,792 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.287128712871287) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 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 130 [2023-12-21 04:34:09,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:09,793 INFO L225 Difference]: With dead ends: 232 [2023-12-21 04:34:09,793 INFO L226 Difference]: Without dead ends: 132 [2023-12-21 04:34:09,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 162 SyntacticMatches, 63 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7627 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3968, Invalid=13854, Unknown=0, NotChecked=0, Total=17822 [2023-12-21 04:34:09,794 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:09,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 361 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-21 04:34:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-12-21 04:34:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.015267175572519) internal successors, (133), 131 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2023-12-21 04:34:09,802 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 130 [2023-12-21 04:34:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:09,802 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2023-12-21 04:34:09,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.287128712871287) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2023-12-21 04:34:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 04:34:09,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:09,803 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1] [2023-12-21 04:34:09,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:10,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:10,021 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:10,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1730887987, now seen corresponding path program 62 times [2023-12-21 04:34:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:10,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693722510] [2023-12-21 04:34:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:10,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 496 proven. 1489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693722510] [2023-12-21 04:34:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693722510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075129088] [2023-12-21 04:34:10,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:34:10,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:10,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:10,726 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:10,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-12-21 04:34:10,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:34:10,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:10,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 04:34:10,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:10,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:11,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075129088] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:11,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:11,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 37 [2023-12-21 04:34:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11949543] [2023-12-21 04:34:11,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:11,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 04:34:11,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:11,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 04:34:11,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 04:34:11,467 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:11,765 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2023-12-21 04:34:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-21 04:34:11,766 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-21 04:34:11,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:11,767 INFO L225 Difference]: With dead ends: 143 [2023-12-21 04:34:11,767 INFO L226 Difference]: Without dead ends: 141 [2023-12-21 04:34:11,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 226 SyntacticMatches, 64 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1823, Invalid=3147, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 04:34:11,773 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 72 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:11,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 23 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-21 04:34:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2023-12-21 04:34:11,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2023-12-21 04:34:11,788 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 131 [2023-12-21 04:34:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:11,788 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2023-12-21 04:34:11,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2023-12-21 04:34:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 04:34:11,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:11,789 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 1, 1, 1, 1, 1] [2023-12-21 04:34:11,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:11,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-12-21 04:34:11,995 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:11,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash 498155340, now seen corresponding path program 63 times [2023-12-21 04:34:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449441202] [2023-12-21 04:34:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:11,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1458 proven. 622 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:13,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:13,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449441202] [2023-12-21 04:34:13,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449441202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:13,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949896076] [2023-12-21 04:34:13,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:34:13,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:13,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:13,582 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:13,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-12-21 04:34:13,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2023-12-21 04:34:13,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:13,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 04:34:13,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:15,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:16,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949896076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:16,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:16,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 103 [2023-12-21 04:34:16,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307652530] [2023-12-21 04:34:16,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:16,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-21 04:34:16,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:16,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-21 04:34:16,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 04:34:16,429 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:17,099 INFO L93 Difference]: Finished difference Result 239 states and 241 transitions. [2023-12-21 04:34:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 04:34:17,099 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-21 04:34:17,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:17,099 INFO L225 Difference]: With dead ends: 239 [2023-12-21 04:34:17,099 INFO L226 Difference]: Without dead ends: 136 [2023-12-21 04:34:17,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 167 SyntacticMatches, 65 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8097 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4207, Invalid=14699, Unknown=0, NotChecked=0, Total=18906 [2023-12-21 04:34:17,101 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:17,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 305 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-21 04:34:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-12-21 04:34:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:17,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2023-12-21 04:34:17,109 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2023-12-21 04:34:17,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:17,109 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2023-12-21 04:34:17,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2023-12-21 04:34:17,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 04:34:17,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:17,110 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1, 1] [2023-12-21 04:34:17,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-12-21 04:34:17,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:17,316 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:17,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:17,316 INFO L85 PathProgramCache]: Analyzing trace with hash -739312719, now seen corresponding path program 64 times [2023-12-21 04:34:17,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:17,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896121898] [2023-12-21 04:34:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:17,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 528 proven. 1585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:18,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:18,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896121898] [2023-12-21 04:34:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896121898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195864935] [2023-12-21 04:34:18,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:34:18,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:18,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:18,180 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:18,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-12-21 04:34:18,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:34:18,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:18,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-21 04:34:18,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:18,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:19,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195864935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:19,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:19,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2023-12-21 04:34:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945908191] [2023-12-21 04:34:19,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 04:34:19,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 04:34:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=844, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 04:34:19,194 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 38 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:19,514 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2023-12-21 04:34:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-21 04:34:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 38 states have internal predecessors, (139), 0 states have call successors, (0), 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 135 [2023-12-21 04:34:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:19,515 INFO L225 Difference]: With dead ends: 147 [2023-12-21 04:34:19,515 INFO L226 Difference]: Without dead ends: 145 [2023-12-21 04:34:19,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 233 SyntacticMatches, 66 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2469 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1929, Invalid=3327, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 04:34:19,516 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 74 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:19,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 23 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-21 04:34:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2023-12-21 04:34:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2023-12-21 04:34:19,523 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 135 [2023-12-21 04:34:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:19,523 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2023-12-21 04:34:19,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 38 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2023-12-21 04:34:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 04:34:19,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:19,524 INFO L195 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 1, 1, 1, 1, 1] [2023-12-21 04:34:19,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:19,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-12-21 04:34:19,730 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:19,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash -268097560, now seen corresponding path program 65 times [2023-12-21 04:34:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:19,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848611286] [2023-12-21 04:34:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:19,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1553 proven. 658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848611286] [2023-12-21 04:34:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848611286] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547184718] [2023-12-21 04:34:20,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:34:20,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:20,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:20,923 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:20,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-12-21 04:34:21,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2023-12-21 04:34:21,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:21,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 04:34:21,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:22,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:23,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547184718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:23,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:23,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 106 [2023-12-21 04:34:23,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868684322] [2023-12-21 04:34:23,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:23,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-12-21 04:34:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-12-21 04:34:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2023-12-21 04:34:23,064 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 107 states, 107 states have (on average 2.289719626168224) internal successors, (245), 106 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:23,832 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2023-12-21 04:34:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-21 04:34:23,833 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.289719626168224) internal successors, (245), 106 states have internal predecessors, (245), 0 states have call successors, (0), 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 138 [2023-12-21 04:34:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:23,833 INFO L225 Difference]: With dead ends: 246 [2023-12-21 04:34:23,833 INFO L226 Difference]: Without dead ends: 140 [2023-12-21 04:34:23,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 172 SyntacticMatches, 67 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8581 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4453, Invalid=15569, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 04:34:23,835 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:23,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 493 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:34:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-21 04:34:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-12-21 04:34:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2023-12-21 04:34:23,843 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 138 [2023-12-21 04:34:23,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:23,843 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2023-12-21 04:34:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.289719626168224) internal successors, (245), 106 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2023-12-21 04:34:23,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 04:34:23,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:23,844 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1, 1] [2023-12-21 04:34:23,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:24,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-12-21 04:34:24,049 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:24,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1634457139, now seen corresponding path program 66 times [2023-12-21 04:34:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:24,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346338628] [2023-12-21 04:34:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:24,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 561 proven. 1684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:24,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346338628] [2023-12-21 04:34:24,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346338628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896768320] [2023-12-21 04:34:24,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:34:24,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:24,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:24,783 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:24,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-12-21 04:34:24,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2023-12-21 04:34:24,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:24,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 04:34:24,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 595 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:25,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 595 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896768320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:25,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 39 [2023-12-21 04:34:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946684857] [2023-12-21 04:34:25,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 04:34:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 04:34:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=886, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 04:34:25,618 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 40 states, 40 states have (on average 3.575) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:25,943 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2023-12-21 04:34:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-21 04:34:25,944 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.575) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 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 139 [2023-12-21 04:34:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:25,944 INFO L225 Difference]: With dead ends: 151 [2023-12-21 04:34:25,944 INFO L226 Difference]: Without dead ends: 149 [2023-12-21 04:34:25,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 240 SyntacticMatches, 68 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2612 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2038, Invalid=3512, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 04:34:25,945 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 42 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:25,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:25,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-21 04:34:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2023-12-21 04:34:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2023-12-21 04:34:25,953 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 139 [2023-12-21 04:34:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:25,953 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2023-12-21 04:34:25,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.575) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2023-12-21 04:34:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 04:34:25,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:25,954 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 1, 1, 1, 1, 1] [2023-12-21 04:34:25,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-12-21 04:34:26,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-21 04:34:26,159 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:26,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash -63572916, now seen corresponding path program 67 times [2023-12-21 04:34:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560077039] [2023-12-21 04:34:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1651 proven. 695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:27,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:27,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560077039] [2023-12-21 04:34:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560077039] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:27,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542768683] [2023-12-21 04:34:27,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:34:27,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:27,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:27,454 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:27,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-12-21 04:34:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:27,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-21 04:34:27,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:29,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542768683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:30,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 109 [2023-12-21 04:34:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541236860] [2023-12-21 04:34:30,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:30,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2023-12-21 04:34:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2023-12-21 04:34:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2023-12-21 04:34:30,814 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 110 states, 110 states have (on average 2.290909090909091) internal successors, (252), 109 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:31,797 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2023-12-21 04:34:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-21 04:34:31,798 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.290909090909091) internal successors, (252), 109 states have internal predecessors, (252), 0 states have call successors, (0), 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 142 [2023-12-21 04:34:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:31,798 INFO L225 Difference]: With dead ends: 253 [2023-12-21 04:34:31,798 INFO L226 Difference]: Without dead ends: 144 [2023-12-21 04:34:31,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 177 SyntacticMatches, 69 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9079 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4706, Invalid=16464, Unknown=0, NotChecked=0, Total=21170 [2023-12-21 04:34:31,799 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:31,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 375 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:34:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-21 04:34:31,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-12-21 04:34:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2023-12-21 04:34:31,819 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 142 [2023-12-21 04:34:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:31,819 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2023-12-21 04:34:31,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.290909090909091) internal successors, (252), 109 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2023-12-21 04:34:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 04:34:31,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:31,819 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1, 1] [2023-12-21 04:34:31,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-12-21 04:34:32,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-12-21 04:34:32,024 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:32,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:32,025 INFO L85 PathProgramCache]: Analyzing trace with hash -436765775, now seen corresponding path program 68 times [2023-12-21 04:34:32,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:32,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085942862] [2023-12-21 04:34:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:32,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 595 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:32,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:32,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085942862] [2023-12-21 04:34:32,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085942862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:32,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175064278] [2023-12-21 04:34:32,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:34:32,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:32,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:32,957 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:32,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-12-21 04:34:33,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:34:33,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:33,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-21 04:34:33,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 630 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:33,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 630 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:34,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175064278] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:34,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 40 [2023-12-21 04:34:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898799485] [2023-12-21 04:34:34,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:34,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 04:34:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 04:34:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=929, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 04:34:34,188 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:34,673 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2023-12-21 04:34:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-21 04:34:34,673 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 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 143 [2023-12-21 04:34:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:34,674 INFO L225 Difference]: With dead ends: 155 [2023-12-21 04:34:34,674 INFO L226 Difference]: Without dead ends: 153 [2023-12-21 04:34:34,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 247 SyntacticMatches, 70 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2759 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2150, Invalid=3702, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 04:34:34,675 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 78 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:34,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 21 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-21 04:34:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2023-12-21 04:34:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2023-12-21 04:34:34,683 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 143 [2023-12-21 04:34:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:34,683 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2023-12-21 04:34:34,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2023-12-21 04:34:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 04:34:34,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:34,684 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 1, 1, 1, 1, 1] [2023-12-21 04:34:34,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-12-21 04:34:34,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:34,890 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:34,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2066524136, now seen corresponding path program 69 times [2023-12-21 04:34:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639951441] [2023-12-21 04:34:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:34,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1752 proven. 733 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:36,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639951441] [2023-12-21 04:34:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639951441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183124490] [2023-12-21 04:34:36,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:34:36,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:36,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:36,357 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:36,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-12-21 04:34:36,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2023-12-21 04:34:36,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:36,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 04:34:36,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:38,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:39,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183124490] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:39,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:39,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 112 [2023-12-21 04:34:39,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002859175] [2023-12-21 04:34:39,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:39,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-21 04:34:39,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:39,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-21 04:34:39,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 04:34:39,566 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 113 states, 113 states have (on average 2.2920353982300883) internal successors, (259), 112 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) [2023-12-21 04:34:40,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:40,454 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2023-12-21 04:34:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-21 04:34:40,454 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.2920353982300883) internal successors, (259), 112 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 146 [2023-12-21 04:34:40,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:40,456 INFO L225 Difference]: With dead ends: 260 [2023-12-21 04:34:40,456 INFO L226 Difference]: Without dead ends: 148 [2023-12-21 04:34:40,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 182 SyntacticMatches, 71 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9591 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4966, Invalid=17384, Unknown=0, NotChecked=0, Total=22350 [2023-12-21 04:34:40,457 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:40,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 473 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:34:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-21 04:34:40,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-12-21 04:34:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2023-12-21 04:34:40,486 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 146 [2023-12-21 04:34:40,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:40,486 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2023-12-21 04:34:40,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.2920353982300883) internal successors, (259), 112 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) [2023-12-21 04:34:40,486 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2023-12-21 04:34:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 04:34:40,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:40,486 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1, 1] [2023-12-21 04:34:40,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-12-21 04:34:40,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:40,692 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:40,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:40,692 INFO L85 PathProgramCache]: Analyzing trace with hash 274855117, now seen corresponding path program 70 times [2023-12-21 04:34:40,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:40,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447831836] [2023-12-21 04:34:40,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:40,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 630 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447831836] [2023-12-21 04:34:41,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447831836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465851054] [2023-12-21 04:34:41,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:34:41,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:41,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:41,639 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:41,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-12-21 04:34:41,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:34:41,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:41,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 04:34:41,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:41,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:42,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465851054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:42,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:42,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 41 [2023-12-21 04:34:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018839989] [2023-12-21 04:34:42,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 04:34:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 04:34:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=973, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 04:34:42,506 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:42,851 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2023-12-21 04:34:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-21 04:34:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 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 147 [2023-12-21 04:34:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:42,866 INFO L225 Difference]: With dead ends: 159 [2023-12-21 04:34:42,866 INFO L226 Difference]: Without dead ends: 157 [2023-12-21 04:34:42,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 254 SyntacticMatches, 72 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2910 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2265, Invalid=3897, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 04:34:42,867 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 80 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:42,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 25 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-21 04:34:42,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-12-21 04:34:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2023-12-21 04:34:42,876 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 147 [2023-12-21 04:34:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:42,876 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2023-12-21 04:34:42,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2023-12-21 04:34:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 04:34:42,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:42,876 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 1, 1, 1, 1, 1] [2023-12-21 04:34:42,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:43,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:43,082 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:43,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2005944652, now seen corresponding path program 71 times [2023-12-21 04:34:43,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:43,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431533710] [2023-12-21 04:34:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:43,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1856 proven. 772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:44,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:44,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431533710] [2023-12-21 04:34:44,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431533710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:44,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144108658] [2023-12-21 04:34:44,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:34:44,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:44,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:44,497 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:44,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-12-21 04:34:44,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2023-12-21 04:34:44,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:44,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-21 04:34:44,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:45,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:47,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144108658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:47,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:47,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76] total 115 [2023-12-21 04:34:47,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266555612] [2023-12-21 04:34:47,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:47,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2023-12-21 04:34:47,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:47,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2023-12-21 04:34:47,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2023-12-21 04:34:47,197 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 116 states, 116 states have (on average 2.293103448275862) internal successors, (266), 115 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) [2023-12-21 04:34:48,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:48,204 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2023-12-21 04:34:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 04:34:48,204 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.293103448275862) internal successors, (266), 115 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 150 [2023-12-21 04:34:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:48,205 INFO L225 Difference]: With dead ends: 267 [2023-12-21 04:34:48,205 INFO L226 Difference]: Without dead ends: 152 [2023-12-21 04:34:48,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 187 SyntacticMatches, 73 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10117 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5233, Invalid=18329, Unknown=0, NotChecked=0, Total=23562 [2023-12-21 04:34:48,207 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:48,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 385 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:34:48,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-21 04:34:48,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-12-21 04:34:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2023-12-21 04:34:48,216 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 150 [2023-12-21 04:34:48,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:48,216 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2023-12-21 04:34:48,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.293103448275862) internal successors, (266), 115 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) [2023-12-21 04:34:48,216 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2023-12-21 04:34:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 04:34:48,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:48,216 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1, 1] [2023-12-21 04:34:48,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:48,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2023-12-21 04:34:48,417 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:48,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1512399951, now seen corresponding path program 72 times [2023-12-21 04:34:48,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976164780] [2023-12-21 04:34:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:48,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 666 proven. 1999 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:49,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:49,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976164780] [2023-12-21 04:34:49,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976164780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:49,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369922801] [2023-12-21 04:34:49,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:34:49,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:49,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:49,299 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:49,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-12-21 04:34:49,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2023-12-21 04:34:49,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:49,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-21 04:34:49,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 703 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:49,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 703 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369922801] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:50,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 42 [2023-12-21 04:34:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527879110] [2023-12-21 04:34:50,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:50,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 04:34:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 04:34:50,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=1018, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 04:34:50,225 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 42 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:50,554 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2023-12-21 04:34:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-21 04:34:50,554 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 42 states have internal predecessors, (155), 0 states have call successors, (0), 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 151 [2023-12-21 04:34:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:50,555 INFO L225 Difference]: With dead ends: 163 [2023-12-21 04:34:50,555 INFO L226 Difference]: Without dead ends: 161 [2023-12-21 04:34:50,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 261 SyntacticMatches, 74 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3065 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2383, Invalid=4097, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 04:34:50,555 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 80 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:50,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 21 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-21 04:34:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2023-12-21 04:34:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2023-12-21 04:34:50,594 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 151 [2023-12-21 04:34:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:50,594 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2023-12-21 04:34:50,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 42 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:50,594 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2023-12-21 04:34:50,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 04:34:50,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:50,595 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 1, 1, 1, 1, 1] [2023-12-21 04:34:50,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:50,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:50,800 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:50,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:50,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1695184920, now seen corresponding path program 73 times [2023-12-21 04:34:50,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:50,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570859094] [2023-12-21 04:34:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:50,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 1963 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570859094] [2023-12-21 04:34:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570859094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040063636] [2023-12-21 04:34:52,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:34:52,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:52,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:52,282 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:52,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-12-21 04:34:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:52,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 04:34:52,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 2072 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:53,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 2072 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:54,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040063636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:54,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 118 [2023-12-21 04:34:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372842061] [2023-12-21 04:34:54,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-12-21 04:34:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-12-21 04:34:54,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2023-12-21 04:34:54,756 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand has 119 states, 119 states have (on average 2.2941176470588234) internal successors, (273), 118 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:55,774 INFO L93 Difference]: Finished difference Result 274 states and 276 transitions. [2023-12-21 04:34:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 04:34:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.2941176470588234) internal successors, (273), 118 states have internal predecessors, (273), 0 states have call successors, (0), 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 154 [2023-12-21 04:34:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:55,775 INFO L225 Difference]: With dead ends: 274 [2023-12-21 04:34:55,775 INFO L226 Difference]: Without dead ends: 156 [2023-12-21 04:34:55,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 192 SyntacticMatches, 75 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10657 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5507, Invalid=19299, Unknown=0, NotChecked=0, Total=24806 [2023-12-21 04:34:55,776 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:55,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 419 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:34:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-21 04:34:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-12-21 04:34:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2023-12-21 04:34:55,785 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 154 [2023-12-21 04:34:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:55,785 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2023-12-21 04:34:55,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.2941176470588234) internal successors, (273), 118 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2023-12-21 04:34:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 04:34:55,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:55,786 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1, 1] [2023-12-21 04:34:55,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2023-12-21 04:34:55,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:55,987 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:55,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 492183501, now seen corresponding path program 74 times [2023-12-21 04:34:55,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:55,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497061953] [2023-12-21 04:34:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:55,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:34:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 703 proven. 2110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:56,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:34:56,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497061953] [2023-12-21 04:34:56,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497061953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:34:56,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115121463] [2023-12-21 04:34:56,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:34:56,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:34:56,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:34:56,851 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:34:56,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-12-21 04:34:56,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:34:56,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:34:56,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 04:34:56,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:34:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 741 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:57,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:34:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 741 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:34:57,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115121463] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:34:57,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:34:57,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 43 [2023-12-21 04:34:57,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092659480] [2023-12-21 04:34:57,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:34:57,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 04:34:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:34:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 04:34:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=1064, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 04:34:57,848 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 44 states, 44 states have (on average 3.6136363636363638) internal successors, (159), 43 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:58,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:34:58,207 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2023-12-21 04:34:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-21 04:34:58,207 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.6136363636363638) internal successors, (159), 43 states have internal predecessors, (159), 0 states have call successors, (0), 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 155 [2023-12-21 04:34:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:34:58,208 INFO L225 Difference]: With dead ends: 167 [2023-12-21 04:34:58,208 INFO L226 Difference]: Without dead ends: 165 [2023-12-21 04:34:58,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 268 SyntacticMatches, 76 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3224 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2504, Invalid=4302, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 04:34:58,209 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 84 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:34:58,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 21 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:34:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-21 04:34:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2023-12-21 04:34:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2023-12-21 04:34:58,218 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 155 [2023-12-21 04:34:58,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:34:58,218 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2023-12-21 04:34:58,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.6136363636363638) internal successors, (159), 43 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:34:58,219 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2023-12-21 04:34:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 04:34:58,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:34:58,219 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 1, 1, 1, 1, 1] [2023-12-21 04:34:58,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-12-21 04:34:58,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-12-21 04:34:58,420 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:34:58,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:34:58,420 INFO L85 PathProgramCache]: Analyzing trace with hash -374849972, now seen corresponding path program 75 times [2023-12-21 04:34:58,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:34:58,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256109811] [2023-12-21 04:34:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:34:58,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:34:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2073 proven. 853 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256109811] [2023-12-21 04:35:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256109811] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860381553] [2023-12-21 04:35:00,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:35:00,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:00,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:00,003 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:00,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-12-21 04:35:00,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2023-12-21 04:35:00,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:00,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-21 04:35:00,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2185 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:01,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2185 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:03,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860381553] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:03,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:03,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 121 [2023-12-21 04:35:03,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370095375] [2023-12-21 04:35:03,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:03,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2023-12-21 04:35:03,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:03,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2023-12-21 04:35:03,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2023-12-21 04:35:03,181 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 122 states, 122 states have (on average 2.2950819672131146) internal successors, (280), 121 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:04,108 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2023-12-21 04:35:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 04:35:04,108 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.2950819672131146) internal successors, (280), 121 states have internal predecessors, (280), 0 states have call successors, (0), 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 158 [2023-12-21 04:35:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:04,109 INFO L225 Difference]: With dead ends: 281 [2023-12-21 04:35:04,109 INFO L226 Difference]: Without dead ends: 160 [2023-12-21 04:35:04,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 197 SyntacticMatches, 77 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11211 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5788, Invalid=20294, Unknown=0, NotChecked=0, Total=26082 [2023-12-21 04:35:04,110 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:04,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 579 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:35:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-21 04:35:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-21 04:35:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2023-12-21 04:35:04,119 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 158 [2023-12-21 04:35:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:04,119 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2023-12-21 04:35:04,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.2950819672131146) internal successors, (280), 121 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2023-12-21 04:35:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 04:35:04,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:04,120 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1, 1] [2023-12-21 04:35:04,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-12-21 04:35:04,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-12-21 04:35:04,325 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:04,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1736418383, now seen corresponding path program 76 times [2023-12-21 04:35:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563091180] [2023-12-21 04:35:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:04,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 741 proven. 2224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:05,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:05,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563091180] [2023-12-21 04:35:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563091180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077397275] [2023-12-21 04:35:05,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:35:05,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:05,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:05,248 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:05,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-12-21 04:35:05,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:35:05,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:05,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-21 04:35:05,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 780 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:05,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 780 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:06,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077397275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:06,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:06,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 44 [2023-12-21 04:35:06,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689067621] [2023-12-21 04:35:06,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:06,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 04:35:06,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:06,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 04:35:06,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=1111, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 04:35:06,506 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 44 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:06,926 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2023-12-21 04:35:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-21 04:35:06,927 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 44 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2023-12-21 04:35:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:06,927 INFO L225 Difference]: With dead ends: 171 [2023-12-21 04:35:06,927 INFO L226 Difference]: Without dead ends: 169 [2023-12-21 04:35:06,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 275 SyntacticMatches, 78 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3387 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2628, Invalid=4512, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 04:35:06,928 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:06,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 26 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:35:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-21 04:35:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2023-12-21 04:35:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2023-12-21 04:35:06,938 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 159 [2023-12-21 04:35:06,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:06,938 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2023-12-21 04:35:06,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 44 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2023-12-21 04:35:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 04:35:06,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:06,939 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 1, 1, 1, 1, 1] [2023-12-21 04:35:06,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-12-21 04:35:07,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:07,144 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:07,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1049114648, now seen corresponding path program 77 times [2023-12-21 04:35:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:07,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918827335] [2023-12-21 04:35:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:07,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2186 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:08,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:08,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918827335] [2023-12-21 04:35:08,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918827335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:08,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955091631] [2023-12-21 04:35:08,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:35:08,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:08,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:08,846 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:08,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-12-21 04:35:08,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2023-12-21 04:35:08,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:08,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 04:35:08,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2301 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:10,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2301 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:11,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955091631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:11,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:11,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 82] total 124 [2023-12-21 04:35:11,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441782777] [2023-12-21 04:35:11,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:11,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2023-12-21 04:35:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:11,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2023-12-21 04:35:11,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 04:35:11,989 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand has 125 states, 125 states have (on average 2.296) internal successors, (287), 124 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:13,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:13,450 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2023-12-21 04:35:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-21 04:35:13,451 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.296) internal successors, (287), 124 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-21 04:35:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:13,451 INFO L225 Difference]: With dead ends: 288 [2023-12-21 04:35:13,451 INFO L226 Difference]: Without dead ends: 164 [2023-12-21 04:35:13,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 202 SyntacticMatches, 79 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11779 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6076, Invalid=21314, Unknown=0, NotChecked=0, Total=27390 [2023-12-21 04:35:13,453 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:13,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 529 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:35:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-21 04:35:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-12-21 04:35:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0122699386503067) internal successors, (165), 163 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2023-12-21 04:35:13,463 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 162 [2023-12-21 04:35:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:13,463 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2023-12-21 04:35:13,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.296) internal successors, (287), 124 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2023-12-21 04:35:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 04:35:13,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:13,464 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1, 1] [2023-12-21 04:35:13,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2023-12-21 04:35:13,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:13,669 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:13,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash -494359859, now seen corresponding path program 78 times [2023-12-21 04:35:13,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:13,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061241239] [2023-12-21 04:35:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:13,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 780 proven. 2341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:14,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061241239] [2023-12-21 04:35:14,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061241239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283264191] [2023-12-21 04:35:14,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:35:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:14,814 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:14,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-12-21 04:35:14,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2023-12-21 04:35:14,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:14,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 04:35:14,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 820 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:15,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 820 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:16,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283264191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:16,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:16,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 45 [2023-12-21 04:35:16,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230860433] [2023-12-21 04:35:16,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:16,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 04:35:16,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:16,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 04:35:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=1159, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 04:35:16,309 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand has 46 states, 46 states have (on average 3.630434782608696) internal successors, (167), 45 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:16,718 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2023-12-21 04:35:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-21 04:35:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.630434782608696) internal successors, (167), 45 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-21 04:35:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:16,719 INFO L225 Difference]: With dead ends: 175 [2023-12-21 04:35:16,719 INFO L226 Difference]: Without dead ends: 173 [2023-12-21 04:35:16,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 282 SyntacticMatches, 80 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3554 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2755, Invalid=4727, Unknown=0, NotChecked=0, Total=7482 [2023-12-21 04:35:16,719 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 88 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:16,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 29 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:35:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-21 04:35:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-21 04:35:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 166 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2023-12-21 04:35:16,729 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 163 [2023-12-21 04:35:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:16,730 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2023-12-21 04:35:16,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.630434782608696) internal successors, (167), 45 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2023-12-21 04:35:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-21 04:35:16,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:16,730 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 1, 1, 1, 1, 1] [2023-12-21 04:35:16,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2023-12-21 04:35:16,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-12-21 04:35:16,936 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:16,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash -26881204, now seen corresponding path program 79 times [2023-12-21 04:35:16,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:16,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234517331] [2023-12-21 04:35:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2302 proven. 938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:19,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:19,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234517331] [2023-12-21 04:35:19,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234517331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:19,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503165582] [2023-12-21 04:35:19,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:35:19,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:19,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:19,231 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:19,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-12-21 04:35:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:19,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-21 04:35:19,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2420 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:20,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2420 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:22,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503165582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:22,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:22,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84, 84] total 127 [2023-12-21 04:35:22,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619091351] [2023-12-21 04:35:22,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:22,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-12-21 04:35:22,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-12-21 04:35:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2023-12-21 04:35:22,174 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 128 states, 128 states have (on average 2.296875) internal successors, (294), 127 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:23,119 INFO L93 Difference]: Finished difference Result 295 states and 297 transitions. [2023-12-21 04:35:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-21 04:35:23,120 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.296875) internal successors, (294), 127 states have internal predecessors, (294), 0 states have call successors, (0), 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 166 [2023-12-21 04:35:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:23,120 INFO L225 Difference]: With dead ends: 295 [2023-12-21 04:35:23,120 INFO L226 Difference]: Without dead ends: 168 [2023-12-21 04:35:23,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 207 SyntacticMatches, 81 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12361 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6371, Invalid=22359, Unknown=0, NotChecked=0, Total=28730 [2023-12-21 04:35:23,122 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:23,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 324 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:35:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-21 04:35:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-21 04:35:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2023-12-21 04:35:23,142 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 166 [2023-12-21 04:35:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:23,142 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2023-12-21 04:35:23,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.296875) internal successors, (294), 127 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2023-12-21 04:35:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 04:35:23,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:23,143 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1, 1] [2023-12-21 04:35:23,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2023-12-21 04:35:23,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:23,348 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:23,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:23,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1798259791, now seen corresponding path program 80 times [2023-12-21 04:35:23,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:23,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907010698] [2023-12-21 04:35:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:23,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 820 proven. 2461 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:24,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:24,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907010698] [2023-12-21 04:35:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907010698] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:24,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000731313] [2023-12-21 04:35:24,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:35:24,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:24,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:24,388 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:24,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-12-21 04:35:24,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:35:24,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:24,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-21 04:35:24,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 861 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:24,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 861 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:25,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000731313] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:25,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:25,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 46 [2023-12-21 04:35:25,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319453901] [2023-12-21 04:35:25,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:25,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 04:35:25,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 04:35:25,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=1208, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 04:35:25,358 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 47 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 46 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:25,952 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2023-12-21 04:35:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-21 04:35:25,952 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 46 states have internal predecessors, (171), 0 states have call successors, (0), 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 167 [2023-12-21 04:35:25,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:25,953 INFO L225 Difference]: With dead ends: 179 [2023-12-21 04:35:25,953 INFO L226 Difference]: Without dead ends: 177 [2023-12-21 04:35:25,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 289 SyntacticMatches, 82 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3725 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2885, Invalid=4947, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 04:35:25,954 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 49 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:25,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 28 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:35:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-21 04:35:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2023-12-21 04:35:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2023-12-21 04:35:25,965 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 167 [2023-12-21 04:35:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:25,965 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2023-12-21 04:35:25,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 46 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2023-12-21 04:35:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-21 04:35:25,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:25,966 INFO L195 NwaCegarLoop]: trace histogram [42, 41, 41, 41, 1, 1, 1, 1, 1] [2023-12-21 04:35:25,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2023-12-21 04:35:26,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:26,171 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:26,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash -825530392, now seen corresponding path program 81 times [2023-12-21 04:35:26,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:26,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78954055] [2023-12-21 04:35:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:26,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2421 proven. 982 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:28,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:28,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78954055] [2023-12-21 04:35:28,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78954055] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:28,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692164363] [2023-12-21 04:35:28,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:35:28,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:28,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:28,070 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:28,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-12-21 04:35:28,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2023-12-21 04:35:28,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:28,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 04:35:28,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2542 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:30,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2542 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:32,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692164363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:32,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:32,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 130 [2023-12-21 04:35:32,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351592681] [2023-12-21 04:35:32,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:32,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2023-12-21 04:35:32,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:32,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2023-12-21 04:35:32,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2023-12-21 04:35:32,129 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 131 states, 131 states have (on average 2.2977099236641223) internal successors, (301), 130 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:33,301 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2023-12-21 04:35:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-21 04:35:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.2977099236641223) internal successors, (301), 130 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-12-21 04:35:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:33,302 INFO L225 Difference]: With dead ends: 302 [2023-12-21 04:35:33,302 INFO L226 Difference]: Without dead ends: 172 [2023-12-21 04:35:33,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 212 SyntacticMatches, 83 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12957 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=6673, Invalid=23429, Unknown=0, NotChecked=0, Total=30102 [2023-12-21 04:35:33,304 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:33,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 576 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:35:33,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-21 04:35:33,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-12-21 04:35:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 171 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2023-12-21 04:35:33,315 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 170 [2023-12-21 04:35:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:33,315 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2023-12-21 04:35:33,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.2977099236641223) internal successors, (301), 130 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2023-12-21 04:35:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 04:35:33,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:33,316 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1, 1] [2023-12-21 04:35:33,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-12-21 04:35:33,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2023-12-21 04:35:33,521 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:33,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash -351169075, now seen corresponding path program 82 times [2023-12-21 04:35:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:33,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111895475] [2023-12-21 04:35:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 861 proven. 2584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:34,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:34,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111895475] [2023-12-21 04:35:34,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111895475] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047515579] [2023-12-21 04:35:34,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:35:34,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:34,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:34,632 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:34,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-12-21 04:35:34,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:35:34,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:34,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-21 04:35:34,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 903 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:34,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 903 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:35,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047515579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:35,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:35,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 47 [2023-12-21 04:35:35,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646936697] [2023-12-21 04:35:35,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:35,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 04:35:35,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:35,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 04:35:35,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=998, Invalid=1258, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 04:35:35,669 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand has 48 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 47 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:36,130 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2023-12-21 04:35:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-21 04:35:36,131 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 47 states have internal predecessors, (175), 0 states have call successors, (0), 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 171 [2023-12-21 04:35:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:36,131 INFO L225 Difference]: With dead ends: 183 [2023-12-21 04:35:36,131 INFO L226 Difference]: Without dead ends: 181 [2023-12-21 04:35:36,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 296 SyntacticMatches, 84 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3900 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3018, Invalid=5172, Unknown=0, NotChecked=0, Total=8190 [2023-12-21 04:35:36,132 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 50 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:36,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 26 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:35:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-21 04:35:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2023-12-21 04:35:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2023-12-21 04:35:36,143 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 171 [2023-12-21 04:35:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:36,143 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2023-12-21 04:35:36,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 47 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2023-12-21 04:35:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 04:35:36,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:36,144 INFO L195 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 1, 1, 1, 1, 1] [2023-12-21 04:35:36,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2023-12-21 04:35:36,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:36,350 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:36,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:36,350 INFO L85 PathProgramCache]: Analyzing trace with hash 867240012, now seen corresponding path program 83 times [2023-12-21 04:35:36,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:36,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727423636] [2023-12-21 04:35:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:36,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2543 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:38,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:38,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727423636] [2023-12-21 04:35:38,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727423636] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:38,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960420303] [2023-12-21 04:35:38,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:35:38,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:38,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:38,260 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:38,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-12-21 04:35:38,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2023-12-21 04:35:38,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:38,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-21 04:35:38,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2667 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:40,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2667 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960420303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:41,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88, 88] total 133 [2023-12-21 04:35:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823050661] [2023-12-21 04:35:41,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:41,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2023-12-21 04:35:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:41,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2023-12-21 04:35:41,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2023-12-21 04:35:41,810 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 134 states, 134 states have (on average 2.298507462686567) internal successors, (308), 133 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:43,233 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2023-12-21 04:35:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-21 04:35:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.298507462686567) internal successors, (308), 133 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-21 04:35:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:43,234 INFO L225 Difference]: With dead ends: 309 [2023-12-21 04:35:43,234 INFO L226 Difference]: Without dead ends: 176 [2023-12-21 04:35:43,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 217 SyntacticMatches, 85 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13567 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=6982, Invalid=24524, Unknown=0, NotChecked=0, Total=31506 [2023-12-21 04:35:43,236 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:43,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 679 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:35:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-21 04:35:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-12-21 04:35:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 175 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2023-12-21 04:35:43,246 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 174 [2023-12-21 04:35:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:43,246 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2023-12-21 04:35:43,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.298507462686567) internal successors, (308), 133 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:43,247 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2023-12-21 04:35:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-21 04:35:43,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:43,247 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1, 1] [2023-12-21 04:35:43,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-12-21 04:35:43,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:43,453 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:43,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:43,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1135852465, now seen corresponding path program 84 times [2023-12-21 04:35:43,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:43,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918787031] [2023-12-21 04:35:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:43,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 903 proven. 2710 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:44,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918787031] [2023-12-21 04:35:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918787031] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997584336] [2023-12-21 04:35:44,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:35:44,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:44,750 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:44,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-12-21 04:35:44,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2023-12-21 04:35:44,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:44,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 92 conjunts are in the unsatisfiable core [2023-12-21 04:35:44,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 946 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:45,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 946 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:46,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997584336] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:46,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:46,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 48 [2023-12-21 04:35:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848981025] [2023-12-21 04:35:46,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:46,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 04:35:46,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:46,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 04:35:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1043, Invalid=1309, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 04:35:46,003 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 48 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:46,506 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2023-12-21 04:35:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-21 04:35:46,506 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 48 states have internal predecessors, (179), 0 states have call successors, (0), 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 175 [2023-12-21 04:35:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:46,507 INFO L225 Difference]: With dead ends: 187 [2023-12-21 04:35:46,507 INFO L226 Difference]: Without dead ends: 185 [2023-12-21 04:35:46,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 303 SyntacticMatches, 86 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4079 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3154, Invalid=5402, Unknown=0, NotChecked=0, Total=8556 [2023-12-21 04:35:46,509 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 51 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:46,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 30 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:35:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-21 04:35:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 179. [2023-12-21 04:35:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 178 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2023-12-21 04:35:46,522 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 175 [2023-12-21 04:35:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:46,523 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2023-12-21 04:35:46,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 48 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2023-12-21 04:35:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 04:35:46,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:46,523 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 1, 1, 1, 1, 1] [2023-12-21 04:35:46,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2023-12-21 04:35:46,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:46,729 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:46,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:46,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1861720088, now seen corresponding path program 85 times [2023-12-21 04:35:46,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:46,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698646641] [2023-12-21 04:35:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:46,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2668 proven. 1073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:48,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:48,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698646641] [2023-12-21 04:35:48,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698646641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:48,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126380465] [2023-12-21 04:35:48,718 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:35:48,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:48,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:48,719 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:48,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2023-12-21 04:35:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:48,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-21 04:35:48,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2795 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:51,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2795 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:52,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126380465] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:52,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:52,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90, 90] total 136 [2023-12-21 04:35:52,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626769801] [2023-12-21 04:35:52,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:52,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2023-12-21 04:35:52,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2023-12-21 04:35:52,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2023-12-21 04:35:52,971 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand has 137 states, 137 states have (on average 2.2992700729927007) internal successors, (315), 136 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) [2023-12-21 04:35:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:54,113 INFO L93 Difference]: Finished difference Result 316 states and 318 transitions. [2023-12-21 04:35:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-21 04:35:54,113 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.2992700729927007) internal successors, (315), 136 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 178 [2023-12-21 04:35:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:54,114 INFO L225 Difference]: With dead ends: 316 [2023-12-21 04:35:54,114 INFO L226 Difference]: Without dead ends: 180 [2023-12-21 04:35:54,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 222 SyntacticMatches, 87 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14191 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=7298, Invalid=25644, Unknown=0, NotChecked=0, Total=32942 [2023-12-21 04:35:54,130 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:54,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 404 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:35:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-21 04:35:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-12-21 04:35:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.011173184357542) internal successors, (181), 179 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2023-12-21 04:35:54,142 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 178 [2023-12-21 04:35:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:54,142 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2023-12-21 04:35:54,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.2992700729927007) internal successors, (315), 136 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) [2023-12-21 04:35:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2023-12-21 04:35:54,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 04:35:54,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:54,143 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1, 1] [2023-12-21 04:35:54,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2023-12-21 04:35:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:54,348 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:54,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1341595443, now seen corresponding path program 86 times [2023-12-21 04:35:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:54,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768627204] [2023-12-21 04:35:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 946 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768627204] [2023-12-21 04:35:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768627204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655564548] [2023-12-21 04:35:55,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:35:55,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:55,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:55,554 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:55,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2023-12-21 04:35:55,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:35:55,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:55,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-21 04:35:55,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:35:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 990 proven. 2795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:55,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:35:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 990 proven. 2795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655564548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:35:56,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:35:56,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 49 [2023-12-21 04:35:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370019057] [2023-12-21 04:35:56,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:35:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 04:35:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:35:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 04:35:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=1361, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 04:35:56,711 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand has 50 states, 50 states have (on average 3.66) internal successors, (183), 49 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:35:57,169 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2023-12-21 04:35:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-21 04:35:57,169 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.66) internal successors, (183), 49 states have internal predecessors, (183), 0 states have call successors, (0), 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 179 [2023-12-21 04:35:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:35:57,170 INFO L225 Difference]: With dead ends: 191 [2023-12-21 04:35:57,170 INFO L226 Difference]: Without dead ends: 189 [2023-12-21 04:35:57,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 310 SyntacticMatches, 88 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4262 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3293, Invalid=5637, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 04:35:57,172 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 96 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:35:57,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 27 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:35:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-21 04:35:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2023-12-21 04:35:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2023-12-21 04:35:57,184 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 179 [2023-12-21 04:35:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:35:57,184 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2023-12-21 04:35:57,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.66) internal successors, (183), 49 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:35:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2023-12-21 04:35:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 04:35:57,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:35:57,185 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 1, 1, 1, 1, 1] [2023-12-21 04:35:57,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2023-12-21 04:35:57,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:57,391 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:35:57,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:35:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1500634444, now seen corresponding path program 87 times [2023-12-21 04:35:57,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:35:57,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46593058] [2023-12-21 04:35:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:35:57,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:35:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:35:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2796 proven. 1120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:35:59,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:35:59,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46593058] [2023-12-21 04:35:59,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46593058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:35:59,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817344011] [2023-12-21 04:35:59,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:35:59,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:35:59,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:35:59,631 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:35:59,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2023-12-21 04:35:59,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2023-12-21 04:35:59,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:35:59,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 92 conjunts are in the unsatisfiable core [2023-12-21 04:35:59,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2926 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:01,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2926 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:02,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817344011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:02,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:02,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92, 92] total 139 [2023-12-21 04:36:02,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980678693] [2023-12-21 04:36:02,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:02,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2023-12-21 04:36:02,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:02,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2023-12-21 04:36:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2023-12-21 04:36:02,961 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 140 states, 140 states have (on average 2.3) internal successors, (322), 139 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:04,083 INFO L93 Difference]: Finished difference Result 323 states and 325 transitions. [2023-12-21 04:36:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-21 04:36:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.3) internal successors, (322), 139 states have internal predecessors, (322), 0 states have call successors, (0), 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 182 [2023-12-21 04:36:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:04,083 INFO L225 Difference]: With dead ends: 323 [2023-12-21 04:36:04,083 INFO L226 Difference]: Without dead ends: 184 [2023-12-21 04:36:04,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 227 SyntacticMatches, 89 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14829 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7621, Invalid=26789, Unknown=0, NotChecked=0, Total=34410 [2023-12-21 04:36:04,086 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:04,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 557 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:36:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-21 04:36:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-12-21 04:36:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.010928961748634) internal successors, (185), 183 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2023-12-21 04:36:04,098 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 182 [2023-12-21 04:36:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:04,098 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2023-12-21 04:36:04,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.3) internal successors, (322), 139 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2023-12-21 04:36:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-21 04:36:04,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:04,099 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1, 1] [2023-12-21 04:36:04,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2023-12-21 04:36:04,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-12-21 04:36:04,304 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:04,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:04,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1609475151, now seen corresponding path program 88 times [2023-12-21 04:36:04,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:04,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268276277] [2023-12-21 04:36:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 990 proven. 2971 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:05,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:05,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268276277] [2023-12-21 04:36:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268276277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348745680] [2023-12-21 04:36:05,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:36:05,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:05,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:05,610 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:05,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2023-12-21 04:36:05,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:36:05,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:36:05,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 04:36:05,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 1035 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:05,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 1035 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:06,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348745680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:06,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 50 [2023-12-21 04:36:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811100609] [2023-12-21 04:36:06,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:06,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 04:36:06,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:06,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 04:36:06,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 04:36:06,945 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 51 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 50 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:07,680 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2023-12-21 04:36:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 04:36:07,680 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 50 states have internal predecessors, (187), 0 states have call successors, (0), 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 183 [2023-12-21 04:36:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:07,681 INFO L225 Difference]: With dead ends: 195 [2023-12-21 04:36:07,681 INFO L226 Difference]: Without dead ends: 193 [2023-12-21 04:36:07,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 317 SyntacticMatches, 90 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4449 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3435, Invalid=5877, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 04:36:07,682 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 98 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:07,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 21 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:36:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-21 04:36:07,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2023-12-21 04:36:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.010752688172043) internal successors, (188), 186 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2023-12-21 04:36:07,695 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 183 [2023-12-21 04:36:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:07,695 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2023-12-21 04:36:07,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 50 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2023-12-21 04:36:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-21 04:36:07,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:07,696 INFO L195 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 1, 1, 1, 1, 1] [2023-12-21 04:36:07,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2023-12-21 04:36:07,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-12-21 04:36:07,901 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:07,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:07,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1145489384, now seen corresponding path program 89 times [2023-12-21 04:36:07,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:07,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308159147] [2023-12-21 04:36:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 2927 proven. 1168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:10,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:10,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308159147] [2023-12-21 04:36:10,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308159147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:10,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690781350] [2023-12-21 04:36:10,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:36:10,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:10,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:10,255 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:10,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2023-12-21 04:36:10,422 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2023-12-21 04:36:10,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:36:10,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-21 04:36:10,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 3060 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:12,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 3060 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690781350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:13,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94, 94] total 142 [2023-12-21 04:36:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061293825] [2023-12-21 04:36:13,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:13,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2023-12-21 04:36:13,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2023-12-21 04:36:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4564, Invalid=15742, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 04:36:13,919 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand has 143 states, 143 states have (on average 2.300699300699301) internal successors, (329), 142 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:15,116 INFO L93 Difference]: Finished difference Result 330 states and 332 transitions. [2023-12-21 04:36:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-21 04:36:15,116 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.300699300699301) internal successors, (329), 142 states have internal predecessors, (329), 0 states have call successors, (0), 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 186 [2023-12-21 04:36:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:15,117 INFO L225 Difference]: With dead ends: 330 [2023-12-21 04:36:15,117 INFO L226 Difference]: Without dead ends: 188 [2023-12-21 04:36:15,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 232 SyntacticMatches, 91 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15481 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7951, Invalid=27959, Unknown=0, NotChecked=0, Total=35910 [2023-12-21 04:36:15,120 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 8 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:15,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 580 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:36:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-21 04:36:15,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-21 04:36:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 187 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 189 transitions. [2023-12-21 04:36:15,137 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 189 transitions. Word has length 186 [2023-12-21 04:36:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:15,137 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 189 transitions. [2023-12-21 04:36:15,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.300699300699301) internal successors, (329), 142 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 189 transitions. [2023-12-21 04:36:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-21 04:36:15,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:15,138 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1, 1] [2023-12-21 04:36:15,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2023-12-21 04:36:15,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:15,344 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:15,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 411470797, now seen corresponding path program 90 times [2023-12-21 04:36:15,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:15,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073151283] [2023-12-21 04:36:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1035 proven. 3106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:16,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073151283] [2023-12-21 04:36:16,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073151283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589408207] [2023-12-21 04:36:16,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:36:16,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:16,616 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:16,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2023-12-21 04:36:16,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2023-12-21 04:36:16,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:36:16,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-21 04:36:16,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1081 proven. 3060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:16,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1081 proven. 3060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:17,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589408207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:17,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:17,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 51 [2023-12-21 04:36:17,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359253736] [2023-12-21 04:36:17,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:17,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 04:36:17,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 04:36:17,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1184, Invalid=1468, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 04:36:17,893 INFO L87 Difference]: Start difference. First operand 188 states and 189 transitions. Second operand has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 51 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:18,379 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2023-12-21 04:36:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-21 04:36:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 51 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2023-12-21 04:36:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:18,405 INFO L225 Difference]: With dead ends: 199 [2023-12-21 04:36:18,405 INFO L226 Difference]: Without dead ends: 197 [2023-12-21 04:36:18,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 324 SyntacticMatches, 92 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4640 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3580, Invalid=6122, Unknown=0, NotChecked=0, Total=9702 [2023-12-21 04:36:18,406 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 52 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:18,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 24 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:36:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-21 04:36:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2023-12-21 04:36:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 190 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2023-12-21 04:36:18,419 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 187 [2023-12-21 04:36:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:18,419 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2023-12-21 04:36:18,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 51 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2023-12-21 04:36:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 04:36:18,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:18,435 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 1, 1, 1, 1, 1] [2023-12-21 04:36:18,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2023-12-21 04:36:18,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:18,636 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:18,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 294670924, now seen corresponding path program 91 times [2023-12-21 04:36:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:18,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98125672] [2023-12-21 04:36:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3061 proven. 1217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:21,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98125672] [2023-12-21 04:36:21,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98125672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480845030] [2023-12-21 04:36:21,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:36:21,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:21,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:21,327 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:21,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2023-12-21 04:36:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:21,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 04:36:21,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3197 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:23,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3197 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:25,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480845030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:25,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:25,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 145 [2023-12-21 04:36:25,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152299006] [2023-12-21 04:36:25,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:25,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2023-12-21 04:36:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2023-12-21 04:36:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2023-12-21 04:36:25,022 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 146 states, 146 states have (on average 2.3013698630136985) internal successors, (336), 145 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:26,585 INFO L93 Difference]: Finished difference Result 337 states and 339 transitions. [2023-12-21 04:36:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 04:36:26,585 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.3013698630136985) internal successors, (336), 145 states have internal predecessors, (336), 0 states have call successors, (0), 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 190 [2023-12-21 04:36:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:26,585 INFO L225 Difference]: With dead ends: 337 [2023-12-21 04:36:26,585 INFO L226 Difference]: Without dead ends: 192 [2023-12-21 04:36:26,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 237 SyntacticMatches, 93 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16147 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=8288, Invalid=29154, Unknown=0, NotChecked=0, Total=37442 [2023-12-21 04:36:26,587 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 8 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:26,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 394 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:36:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-21 04:36:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-12-21 04:36:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0104712041884816) internal successors, (193), 191 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2023-12-21 04:36:26,603 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 190 [2023-12-21 04:36:26,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:26,603 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2023-12-21 04:36:26,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.3013698630136985) internal successors, (336), 145 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2023-12-21 04:36:26,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-21 04:36:26,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:26,604 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1, 1] [2023-12-21 04:36:26,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2023-12-21 04:36:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:26,810 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:26,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1993448369, now seen corresponding path program 92 times [2023-12-21 04:36:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169112758] [2023-12-21 04:36:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1081 proven. 3244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:28,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:28,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169112758] [2023-12-21 04:36:28,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169112758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:28,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107006906] [2023-12-21 04:36:28,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:36:28,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:28,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:28,301 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:28,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2023-12-21 04:36:28,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:36:28,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:36:28,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 100 conjunts are in the unsatisfiable core [2023-12-21 04:36:28,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1128 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:28,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1128 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:29,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107006906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:29,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:29,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2023-12-21 04:36:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112332846] [2023-12-21 04:36:29,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:29,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 04:36:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 04:36:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1233, Invalid=1523, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 04:36:29,687 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 53 states, 53 states have (on average 3.6792452830188678) internal successors, (195), 52 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:30,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:30,452 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2023-12-21 04:36:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-21 04:36:30,452 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.6792452830188678) internal successors, (195), 52 states have internal predecessors, (195), 0 states have call successors, (0), 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 191 [2023-12-21 04:36:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:30,453 INFO L225 Difference]: With dead ends: 203 [2023-12-21 04:36:30,453 INFO L226 Difference]: Without dead ends: 201 [2023-12-21 04:36:30,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 331 SyntacticMatches, 94 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4835 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3728, Invalid=6372, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 04:36:30,454 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 102 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:30,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 27 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:36:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-21 04:36:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2023-12-21 04:36:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0103092783505154) internal successors, (196), 194 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2023-12-21 04:36:30,467 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 191 [2023-12-21 04:36:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:30,468 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2023-12-21 04:36:30,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.6792452830188678) internal successors, (195), 52 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2023-12-21 04:36:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-21 04:36:30,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:30,468 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1] [2023-12-21 04:36:30,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2023-12-21 04:36:30,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:30,674 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:30,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash 312379368, now seen corresponding path program 93 times [2023-12-21 04:36:30,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:30,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479082580] [2023-12-21 04:36:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:30,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3198 proven. 1267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:33,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479082580] [2023-12-21 04:36:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479082580] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995190518] [2023-12-21 04:36:33,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:36:33,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:33,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:33,149 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:33,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2023-12-21 04:36:33,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2023-12-21 04:36:33,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:36:33,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-21 04:36:33,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3337 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:36,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3337 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:38,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995190518] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:38,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:38,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 98] total 148 [2023-12-21 04:36:38,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111151201] [2023-12-21 04:36:38,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:38,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2023-12-21 04:36:38,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2023-12-21 04:36:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2023-12-21 04:36:38,794 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand has 149 states, 149 states have (on average 2.302013422818792) internal successors, (343), 148 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:40,171 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2023-12-21 04:36:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-21 04:36:40,171 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 2.302013422818792) internal successors, (343), 148 states have internal predecessors, (343), 0 states have call successors, (0), 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 194 [2023-12-21 04:36:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:40,172 INFO L225 Difference]: With dead ends: 344 [2023-12-21 04:36:40,172 INFO L226 Difference]: Without dead ends: 196 [2023-12-21 04:36:40,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 242 SyntacticMatches, 95 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16827 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=8632, Invalid=30374, Unknown=0, NotChecked=0, Total=39006 [2023-12-21 04:36:40,175 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:40,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 664 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:36:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-21 04:36:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-12-21 04:36:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 195 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2023-12-21 04:36:40,214 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 194 [2023-12-21 04:36:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:40,214 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2023-12-21 04:36:40,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 2.302013422818792) internal successors, (343), 148 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2023-12-21 04:36:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-21 04:36:40,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:40,221 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1, 1] [2023-12-21 04:36:40,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2023-12-21 04:36:40,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:40,424 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:40,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash -106785075, now seen corresponding path program 94 times [2023-12-21 04:36:40,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:40,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131289889] [2023-12-21 04:36:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:40,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1128 proven. 3385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:42,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:42,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131289889] [2023-12-21 04:36:42,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131289889] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:42,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298862242] [2023-12-21 04:36:42,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:36:42,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:42,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:42,237 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:42,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2023-12-21 04:36:42,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:36:42,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:36:42,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-21 04:36:42,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1176 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:42,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1176 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:44,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298862242] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:44,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:44,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 53 [2023-12-21 04:36:44,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588327750] [2023-12-21 04:36:44,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:44,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 04:36:44,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:44,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 04:36:44,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1283, Invalid=1579, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 04:36:44,271 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand has 54 states, 54 states have (on average 3.685185185185185) internal successors, (199), 53 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:45,056 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2023-12-21 04:36:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-21 04:36:45,056 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.685185185185185) internal successors, (199), 53 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-12-21 04:36:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:45,057 INFO L225 Difference]: With dead ends: 207 [2023-12-21 04:36:45,057 INFO L226 Difference]: Without dead ends: 205 [2023-12-21 04:36:45,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 338 SyntacticMatches, 96 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5034 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3879, Invalid=6627, Unknown=0, NotChecked=0, Total=10506 [2023-12-21 04:36:45,058 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 102 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:45,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 23 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:36:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-21 04:36:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2023-12-21 04:36:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 198 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2023-12-21 04:36:45,071 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 195 [2023-12-21 04:36:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:45,072 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2023-12-21 04:36:45,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.685185185185185) internal successors, (199), 53 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2023-12-21 04:36:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 04:36:45,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:45,072 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 48, 48, 1, 1, 1, 1, 1] [2023-12-21 04:36:45,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2023-12-21 04:36:45,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2023-12-21 04:36:45,278 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:45,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1341417292, now seen corresponding path program 95 times [2023-12-21 04:36:45,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:45,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753908508] [2023-12-21 04:36:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:45,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3338 proven. 1318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:48,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:48,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753908508] [2023-12-21 04:36:48,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753908508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:48,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642118095] [2023-12-21 04:36:48,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:36:48,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:48,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:48,624 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:48,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2023-12-21 04:36:48,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2023-12-21 04:36:48,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:36:48,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 100 conjunts are in the unsatisfiable core [2023-12-21 04:36:48,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3480 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:50,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3480 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:52,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642118095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:52,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:52,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 151 [2023-12-21 04:36:52,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503490089] [2023-12-21 04:36:52,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:52,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2023-12-21 04:36:52,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2023-12-21 04:36:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5155, Invalid=17797, Unknown=0, NotChecked=0, Total=22952 [2023-12-21 04:36:52,762 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 152 states, 152 states have (on average 2.3026315789473686) internal successors, (350), 151 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:54,269 INFO L93 Difference]: Finished difference Result 351 states and 353 transitions. [2023-12-21 04:36:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-21 04:36:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 2.3026315789473686) internal successors, (350), 151 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-21 04:36:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:54,270 INFO L225 Difference]: With dead ends: 351 [2023-12-21 04:36:54,270 INFO L226 Difference]: Without dead ends: 200 [2023-12-21 04:36:54,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 247 SyntacticMatches, 97 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17521 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=8983, Invalid=31619, Unknown=0, NotChecked=0, Total=40602 [2023-12-21 04:36:54,272 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 8 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:54,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 837 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:36:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-21 04:36:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-12-21 04:36:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.0100502512562815) internal successors, (201), 199 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2023-12-21 04:36:54,285 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 198 [2023-12-21 04:36:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:54,286 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2023-12-21 04:36:54,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 2.3026315789473686) internal successors, (350), 151 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2023-12-21 04:36:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-21 04:36:54,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:54,286 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1, 1] [2023-12-21 04:36:54,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2023-12-21 04:36:54,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:54,493 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:54,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash -421758031, now seen corresponding path program 96 times [2023-12-21 04:36:54,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:54,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342207266] [2023-12-21 04:36:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:54,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:36:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1176 proven. 3529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:56,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:36:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342207266] [2023-12-21 04:36:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342207266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:36:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66444493] [2023-12-21 04:36:56,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:36:56,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:36:56,193 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:36:56,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2023-12-21 04:36:56,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2023-12-21 04:36:56,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:36:56,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 104 conjunts are in the unsatisfiable core [2023-12-21 04:36:56,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:36:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1225 proven. 3480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:56,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:36:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1225 proven. 3480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:36:57,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66444493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:36:57,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:36:57,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 54 [2023-12-21 04:36:57,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492788328] [2023-12-21 04:36:57,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:36:57,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 04:36:57,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:36:57,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 04:36:57,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1334, Invalid=1636, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 04:36:57,831 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 54 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:58,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:36:58,607 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2023-12-21 04:36:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-21 04:36:58,608 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 54 states have internal predecessors, (203), 0 states have call successors, (0), 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 199 [2023-12-21 04:36:58,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:36:58,609 INFO L225 Difference]: With dead ends: 211 [2023-12-21 04:36:58,609 INFO L226 Difference]: Without dead ends: 209 [2023-12-21 04:36:58,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 345 SyntacticMatches, 98 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5237 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4033, Invalid=6887, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 04:36:58,610 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 104 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:36:58,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 23 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:36:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-21 04:36:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2023-12-21 04:36:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.00990099009901) internal successors, (204), 202 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2023-12-21 04:36:58,624 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 199 [2023-12-21 04:36:58,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:36:58,624 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2023-12-21 04:36:58,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 54 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:36:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2023-12-21 04:36:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-21 04:36:58,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:36:58,625 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 1, 1, 1, 1, 1] [2023-12-21 04:36:58,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2023-12-21 04:36:58,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:36:58,831 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:36:58,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:36:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1809340440, now seen corresponding path program 97 times [2023-12-21 04:36:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:36:58,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100660412] [2023-12-21 04:36:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:36:58,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:36:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 3481 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:02,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:37:02,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100660412] [2023-12-21 04:37:02,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100660412] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:37:02,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302259631] [2023-12-21 04:37:02,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:37:02,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:02,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:37:02,541 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:37:02,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2023-12-21 04:37:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:02,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-21 04:37:02,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:37:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 3626 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:06,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:37:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 3626 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302259631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:37:08,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:37:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102, 102] total 154 [2023-12-21 04:37:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586695585] [2023-12-21 04:37:08,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:37:08,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2023-12-21 04:37:08,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:37:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2023-12-21 04:37:08,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5360, Invalid=18510, Unknown=0, NotChecked=0, Total=23870 [2023-12-21 04:37:08,933 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand has 155 states, 155 states have (on average 2.303225806451613) internal successors, (357), 154 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:37:10,586 INFO L93 Difference]: Finished difference Result 358 states and 360 transitions. [2023-12-21 04:37:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-21 04:37:10,586 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.303225806451613) internal successors, (357), 154 states have internal predecessors, (357), 0 states have call successors, (0), 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 202 [2023-12-21 04:37:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:37:10,586 INFO L225 Difference]: With dead ends: 358 [2023-12-21 04:37:10,587 INFO L226 Difference]: Without dead ends: 204 [2023-12-21 04:37:10,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 252 SyntacticMatches, 99 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18229 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=9341, Invalid=32889, Unknown=0, NotChecked=0, Total=42230 [2023-12-21 04:37:10,589 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:37:10,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 664 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:37:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-21 04:37:10,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-12-21 04:37:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0098522167487685) internal successors, (205), 203 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2023-12-21 04:37:10,606 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 202 [2023-12-21 04:37:10,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:37:10,606 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2023-12-21 04:37:10,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 2.303225806451613) internal successors, (357), 154 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2023-12-21 04:37:10,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-21 04:37:10,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:37:10,607 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1, 1] [2023-12-21 04:37:10,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2023-12-21 04:37:10,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2023-12-21 04:37:10,812 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:37:10,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:37:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1770716723, now seen corresponding path program 98 times [2023-12-21 04:37:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:37:10,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989575821] [2023-12-21 04:37:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:37:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:37:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1225 proven. 3676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:12,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:37:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989575821] [2023-12-21 04:37:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989575821] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:37:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94644731] [2023-12-21 04:37:12,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:37:12,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:12,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:37:12,602 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:37:12,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2023-12-21 04:37:12,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:37:12,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:37:12,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-21 04:37:12,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:37:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1275 proven. 3626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:12,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:37:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1275 proven. 3626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:14,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94644731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:37:14,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:37:14,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 55 [2023-12-21 04:37:14,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116057236] [2023-12-21 04:37:14,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:37:14,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 04:37:14,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:37:14,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 04:37:14,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1386, Invalid=1694, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 04:37:14,554 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand has 56 states, 56 states have (on average 3.6964285714285716) internal successors, (207), 55 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:37:15,225 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2023-12-21 04:37:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-21 04:37:15,225 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.6964285714285716) internal successors, (207), 55 states have internal predecessors, (207), 0 states have call successors, (0), 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 203 [2023-12-21 04:37:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:37:15,226 INFO L225 Difference]: With dead ends: 215 [2023-12-21 04:37:15,226 INFO L226 Difference]: Without dead ends: 213 [2023-12-21 04:37:15,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 352 SyntacticMatches, 100 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5444 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4190, Invalid=7152, Unknown=0, NotChecked=0, Total=11342 [2023-12-21 04:37:15,227 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 58 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:37:15,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 28 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:37:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-21 04:37:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2023-12-21 04:37:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0097087378640777) internal successors, (208), 206 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:15,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2023-12-21 04:37:15,243 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 203 [2023-12-21 04:37:15,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:37:15,243 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2023-12-21 04:37:15,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.6964285714285716) internal successors, (207), 55 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2023-12-21 04:37:15,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-21 04:37:15,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:37:15,244 INFO L195 NwaCegarLoop]: trace histogram [51, 50, 50, 50, 1, 1, 1, 1, 1] [2023-12-21 04:37:15,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2023-12-21 04:37:15,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:15,450 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:37:15,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:37:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash -628745140, now seen corresponding path program 99 times [2023-12-21 04:37:15,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:37:15,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975264526] [2023-12-21 04:37:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:37:15,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:37:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 3627 proven. 1423 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:18,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:37:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975264526] [2023-12-21 04:37:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975264526] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:37:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611906371] [2023-12-21 04:37:18,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:37:18,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:18,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:37:18,226 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:37:18,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2023-12-21 04:37:18,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2023-12-21 04:37:18,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:37:18,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 104 conjunts are in the unsatisfiable core [2023-12-21 04:37:18,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:37:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 3775 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:20,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:37:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 3775 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611906371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:37:22,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:37:22,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104] total 157 [2023-12-21 04:37:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718326785] [2023-12-21 04:37:22,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:37:22,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2023-12-21 04:37:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:37:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2023-12-21 04:37:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5569, Invalid=19237, Unknown=0, NotChecked=0, Total=24806 [2023-12-21 04:37:22,658 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 158 states, 158 states have (on average 2.3037974683544302) internal successors, (364), 157 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) [2023-12-21 04:37:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:37:24,230 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2023-12-21 04:37:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-21 04:37:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.3037974683544302) internal successors, (364), 157 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 206 [2023-12-21 04:37:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:37:24,231 INFO L225 Difference]: With dead ends: 365 [2023-12-21 04:37:24,231 INFO L226 Difference]: Without dead ends: 208 [2023-12-21 04:37:24,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 257 SyntacticMatches, 101 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18951 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9706, Invalid=34184, Unknown=0, NotChecked=0, Total=43890 [2023-12-21 04:37:24,234 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 8 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:37:24,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 790 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:37:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-21 04:37:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-12-21 04:37:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 207 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2023-12-21 04:37:24,250 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 206 [2023-12-21 04:37:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:37:24,250 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2023-12-21 04:37:24,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.3037974683544302) internal successors, (364), 157 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) [2023-12-21 04:37:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2023-12-21 04:37:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-21 04:37:24,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:37:24,251 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1, 1] [2023-12-21 04:37:24,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2023-12-21 04:37:24,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:24,457 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:37:24,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:37:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash -518390863, now seen corresponding path program 100 times [2023-12-21 04:37:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:37:24,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155572719] [2023-12-21 04:37:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:37:24,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:37:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5101 backedges. 1275 proven. 3826 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:37:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155572719] [2023-12-21 04:37:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155572719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:37:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930738821] [2023-12-21 04:37:26,120 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:37:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:37:26,121 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:37:26,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2023-12-21 04:37:26,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:37:26,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:37:26,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-21 04:37:26,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:37:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5101 backedges. 1326 proven. 3775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:26,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:37:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5101 backedges. 1326 proven. 3775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930738821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:37:28,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:37:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 56 [2023-12-21 04:37:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740406376] [2023-12-21 04:37:28,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:37:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 04:37:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:37:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 04:37:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1439, Invalid=1753, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 04:37:28,416 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 57 states, 57 states have (on average 3.7017543859649122) internal successors, (211), 56 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:37:29,347 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2023-12-21 04:37:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-12-21 04:37:29,347 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.7017543859649122) internal successors, (211), 56 states have internal predecessors, (211), 0 states have call successors, (0), 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 207 [2023-12-21 04:37:29,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:37:29,348 INFO L225 Difference]: With dead ends: 219 [2023-12-21 04:37:29,348 INFO L226 Difference]: Without dead ends: 217 [2023-12-21 04:37:29,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 359 SyntacticMatches, 102 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5655 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4350, Invalid=7422, Unknown=0, NotChecked=0, Total=11772 [2023-12-21 04:37:29,349 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 108 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:37:29,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 23 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:37:29,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-21 04:37:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2023-12-21 04:37:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 210 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2023-12-21 04:37:29,364 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 207 [2023-12-21 04:37:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:37:29,364 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2023-12-21 04:37:29,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.7017543859649122) internal successors, (211), 56 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2023-12-21 04:37:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-21 04:37:29,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:37:29,365 INFO L195 NwaCegarLoop]: trace histogram [52, 51, 51, 51, 1, 1, 1, 1, 1] [2023-12-21 04:37:29,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2023-12-21 04:37:29,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2023-12-21 04:37:29,570 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:37:29,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:37:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1325017064, now seen corresponding path program 101 times [2023-12-21 04:37:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:37:29,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800025567] [2023-12-21 04:37:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:37:29,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:37:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 3776 proven. 1477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:32,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:37:32,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800025567] [2023-12-21 04:37:32,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800025567] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:37:32,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321947860] [2023-12-21 04:37:32,867 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:37:32,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:32,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:37:32,868 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:37:32,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2023-12-21 04:37:33,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2023-12-21 04:37:33,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:37:33,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-21 04:37:33,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:37:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 3927 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:36,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:37:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 3927 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:39,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321947860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:37:39,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:37:39,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106, 106] total 160 [2023-12-21 04:37:39,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164714277] [2023-12-21 04:37:39,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:37:39,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2023-12-21 04:37:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:37:39,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2023-12-21 04:37:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5782, Invalid=19978, Unknown=0, NotChecked=0, Total=25760 [2023-12-21 04:37:39,713 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand has 161 states, 161 states have (on average 2.3043478260869565) internal successors, (371), 160 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:37:41,822 INFO L93 Difference]: Finished difference Result 372 states and 374 transitions. [2023-12-21 04:37:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-12-21 04:37:41,822 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 2.3043478260869565) internal successors, (371), 160 states have internal predecessors, (371), 0 states have call successors, (0), 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 210 [2023-12-21 04:37:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:37:41,822 INFO L225 Difference]: With dead ends: 372 [2023-12-21 04:37:41,822 INFO L226 Difference]: Without dead ends: 212 [2023-12-21 04:37:41,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 262 SyntacticMatches, 103 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19687 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=10078, Invalid=35504, Unknown=0, NotChecked=0, Total=45582 [2023-12-21 04:37:41,825 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:37:41,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 570 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:37:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-21 04:37:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-12-21 04:37:41,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.009478672985782) internal successors, (213), 211 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 213 transitions. [2023-12-21 04:37:41,842 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 213 transitions. Word has length 210 [2023-12-21 04:37:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:37:41,842 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 213 transitions. [2023-12-21 04:37:41,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 2.3043478260869565) internal successors, (371), 160 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:41,842 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 213 transitions. [2023-12-21 04:37:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 04:37:41,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:37:41,843 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1, 1] [2023-12-21 04:37:41,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2023-12-21 04:37:42,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2023-12-21 04:37:42,051 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:37:42,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:37:42,052 INFO L85 PathProgramCache]: Analyzing trace with hash 538299597, now seen corresponding path program 102 times [2023-12-21 04:37:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:37:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167229623] [2023-12-21 04:37:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:37:42,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:37:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5305 backedges. 1326 proven. 3979 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:43,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:37:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167229623] [2023-12-21 04:37:43,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167229623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:37:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429516509] [2023-12-21 04:37:43,842 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:37:43,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:37:43,843 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:37:43,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2023-12-21 04:37:44,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2023-12-21 04:37:44,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:37:44,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-21 04:37:44,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:37:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5305 backedges. 1378 proven. 3927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:44,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:37:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5305 backedges. 1378 proven. 3927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429516509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:37:45,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:37:45,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 57 [2023-12-21 04:37:45,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197105251] [2023-12-21 04:37:45,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:37:45,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 04:37:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:37:45,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 04:37:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1493, Invalid=1813, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 04:37:45,509 INFO L87 Difference]: Start difference. First operand 212 states and 213 transitions. Second operand has 58 states, 58 states have (on average 3.706896551724138) internal successors, (215), 57 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:37:46,138 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2023-12-21 04:37:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-21 04:37:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.706896551724138) internal successors, (215), 57 states have internal predecessors, (215), 0 states have call successors, (0), 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 211 [2023-12-21 04:37:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:37:46,139 INFO L225 Difference]: With dead ends: 223 [2023-12-21 04:37:46,139 INFO L226 Difference]: Without dead ends: 221 [2023-12-21 04:37:46,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 366 SyntacticMatches, 104 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5870 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4513, Invalid=7697, Unknown=0, NotChecked=0, Total=12210 [2023-12-21 04:37:46,140 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 110 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:37:46,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 23 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:37:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-21 04:37:46,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 215. [2023-12-21 04:37:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 214 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2023-12-21 04:37:46,159 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 211 [2023-12-21 04:37:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:37:46,159 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2023-12-21 04:37:46,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.706896551724138) internal successors, (215), 57 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2023-12-21 04:37:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 04:37:46,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:37:46,160 INFO L195 NwaCegarLoop]: trace histogram [53, 52, 52, 52, 1, 1, 1, 1, 1] [2023-12-21 04:37:46,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2023-12-21 04:37:46,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-12-21 04:37:46,366 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:37:46,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:37:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash -919768756, now seen corresponding path program 103 times [2023-12-21 04:37:46,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:37:46,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771968990] [2023-12-21 04:37:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:37:46,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:37:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 3928 proven. 1532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:49,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:37:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771968990] [2023-12-21 04:37:49,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771968990] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:37:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911243725] [2023-12-21 04:37:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:37:49,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:37:49,366 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:37:49,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2023-12-21 04:37:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:49,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-21 04:37:49,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:37:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 4082 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:53,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:37:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 4082 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911243725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:37:55,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:37:55,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 163 [2023-12-21 04:37:55,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653170965] [2023-12-21 04:37:55,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:37:55,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2023-12-21 04:37:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:37:55,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2023-12-21 04:37:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5999, Invalid=20733, Unknown=0, NotChecked=0, Total=26732 [2023-12-21 04:37:55,249 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 164 states, 164 states have (on average 2.3048780487804876) internal successors, (378), 163 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:37:57,270 INFO L93 Difference]: Finished difference Result 379 states and 381 transitions. [2023-12-21 04:37:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-21 04:37:57,270 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 2.3048780487804876) internal successors, (378), 163 states have internal predecessors, (378), 0 states have call successors, (0), 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 214 [2023-12-21 04:37:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:37:57,278 INFO L225 Difference]: With dead ends: 379 [2023-12-21 04:37:57,278 INFO L226 Difference]: Without dead ends: 216 [2023-12-21 04:37:57,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 267 SyntacticMatches, 105 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20437 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=10457, Invalid=36849, Unknown=0, NotChecked=0, Total=47306 [2023-12-21 04:37:57,282 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 8 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:37:57,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 775 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:37:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-21 04:37:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-21 04:37:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 215 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2023-12-21 04:37:57,300 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 214 [2023-12-21 04:37:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:37:57,300 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2023-12-21 04:37:57,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 2.3048780487804876) internal successors, (378), 163 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:37:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2023-12-21 04:37:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-21 04:37:57,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:37:57,301 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1, 1] [2023-12-21 04:37:57,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2023-12-21 04:37:57,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:57,507 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:37:57,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:37:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1468916815, now seen corresponding path program 104 times [2023-12-21 04:37:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:37:57,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052874483] [2023-12-21 04:37:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:37:57,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:37:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:37:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 1378 proven. 4135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:59,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:37:59,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052874483] [2023-12-21 04:37:59,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052874483] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:37:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266516140] [2023-12-21 04:37:59,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:37:59,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:37:59,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:37:59,265 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:37:59,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2023-12-21 04:37:59,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:37:59,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:37:59,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-21 04:37:59,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:37:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 1431 proven. 4082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:37:59,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:38:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 1431 proven. 4082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:00,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266516140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:38:00,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:38:00,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 58 [2023-12-21 04:38:00,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695200816] [2023-12-21 04:38:00,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:38:00,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 04:38:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:38:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 04:38:00,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=1874, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 04:38:00,802 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 59 states, 59 states have (on average 3.711864406779661) internal successors, (219), 58 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:38:01,403 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2023-12-21 04:38:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-21 04:38:01,403 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.711864406779661) internal successors, (219), 58 states have internal predecessors, (219), 0 states have call successors, (0), 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 215 [2023-12-21 04:38:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:38:01,404 INFO L225 Difference]: With dead ends: 227 [2023-12-21 04:38:01,404 INFO L226 Difference]: Without dead ends: 225 [2023-12-21 04:38:01,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 373 SyntacticMatches, 106 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6089 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4679, Invalid=7977, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 04:38:01,405 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 112 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:38:01,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 29 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:38:01,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-21 04:38:01,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2023-12-21 04:38:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.0091743119266054) internal successors, (220), 218 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2023-12-21 04:38:01,421 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 215 [2023-12-21 04:38:01,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:38:01,421 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2023-12-21 04:38:01,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.711864406779661) internal successors, (219), 58 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:01,421 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2023-12-21 04:38:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-21 04:38:01,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:38:01,422 INFO L195 NwaCegarLoop]: trace histogram [54, 53, 53, 53, 1, 1, 1, 1, 1] [2023-12-21 04:38:01,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2023-12-21 04:38:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2023-12-21 04:38:01,628 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:38:01,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:38:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash 925763560, now seen corresponding path program 105 times [2023-12-21 04:38:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:38:01,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146413595] [2023-12-21 04:38:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:38:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:38:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:38:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 4083 proven. 1588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:38:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146413595] [2023-12-21 04:38:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146413595] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:38:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522021942] [2023-12-21 04:38:04,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:38:04,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:04,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:38:04,680 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:38:04,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2023-12-21 04:38:04,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2023-12-21 04:38:04,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:38:04,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-21 04:38:04,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:38:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 4240 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:07,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:38:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 4240 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522021942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:38:09,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:38:09,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110, 110] total 166 [2023-12-21 04:38:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019990255] [2023-12-21 04:38:09,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:38:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2023-12-21 04:38:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:38:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2023-12-21 04:38:09,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6220, Invalid=21502, Unknown=0, NotChecked=0, Total=27722 [2023-12-21 04:38:09,493 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand has 167 states, 167 states have (on average 2.305389221556886) internal successors, (385), 166 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:38:11,147 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2023-12-21 04:38:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-21 04:38:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 2.305389221556886) internal successors, (385), 166 states have internal predecessors, (385), 0 states have call successors, (0), 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 218 [2023-12-21 04:38:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:38:11,148 INFO L225 Difference]: With dead ends: 386 [2023-12-21 04:38:11,148 INFO L226 Difference]: Without dead ends: 220 [2023-12-21 04:38:11,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 272 SyntacticMatches, 107 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21201 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=10843, Invalid=38219, Unknown=0, NotChecked=0, Total=49062 [2023-12-21 04:38:11,152 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 8 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:38:11,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 740 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:38:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-21 04:38:11,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-12-21 04:38:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 219 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 221 transitions. [2023-12-21 04:38:11,197 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 221 transitions. Word has length 218 [2023-12-21 04:38:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:38:11,197 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 221 transitions. [2023-12-21 04:38:11,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 2.305389221556886) internal successors, (385), 166 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 221 transitions. [2023-12-21 04:38:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-21 04:38:11,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:38:11,202 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1, 1] [2023-12-21 04:38:11,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2023-12-21 04:38:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2023-12-21 04:38:11,408 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:38:11,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:38:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash 899479501, now seen corresponding path program 106 times [2023-12-21 04:38:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:38:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452133641] [2023-12-21 04:38:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:38:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:38:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:38:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5725 backedges. 1431 proven. 4294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:13,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:38:13,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452133641] [2023-12-21 04:38:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452133641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:38:13,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381216401] [2023-12-21 04:38:13,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:38:13,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:13,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:38:13,361 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:38:13,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2023-12-21 04:38:13,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:38:13,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:38:13,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-21 04:38:13,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:38:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5725 backedges. 1485 proven. 4240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:13,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:38:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5725 backedges. 1485 proven. 4240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:15,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381216401] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:38:15,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:38:15,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 59 [2023-12-21 04:38:15,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882161189] [2023-12-21 04:38:15,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:38:15,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-21 04:38:15,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:38:15,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-21 04:38:15,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1604, Invalid=1936, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 04:38:15,669 INFO L87 Difference]: Start difference. First operand 220 states and 221 transitions. Second operand has 60 states, 60 states have (on average 3.716666666666667) internal successors, (223), 59 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:38:16,345 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2023-12-21 04:38:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-21 04:38:16,345 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.716666666666667) internal successors, (223), 59 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2023-12-21 04:38:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:38:16,346 INFO L225 Difference]: With dead ends: 231 [2023-12-21 04:38:16,346 INFO L226 Difference]: Without dead ends: 229 [2023-12-21 04:38:16,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 380 SyntacticMatches, 108 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6312 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4848, Invalid=8262, Unknown=0, NotChecked=0, Total=13110 [2023-12-21 04:38:16,347 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 62 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:38:16,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 24 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:38:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-21 04:38:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2023-12-21 04:38:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2023-12-21 04:38:16,363 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 219 [2023-12-21 04:38:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:38:16,363 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2023-12-21 04:38:16,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.716666666666667) internal successors, (223), 59 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2023-12-21 04:38:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-21 04:38:16,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:38:16,364 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 1, 1, 1, 1, 1] [2023-12-21 04:38:16,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2023-12-21 04:38:16,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:16,569 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:38:16,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:38:16,570 INFO L85 PathProgramCache]: Analyzing trace with hash 97674828, now seen corresponding path program 107 times [2023-12-21 04:38:16,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:38:16,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204670824] [2023-12-21 04:38:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:38:16,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:38:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:38:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 4241 proven. 1645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:20,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:38:20,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204670824] [2023-12-21 04:38:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204670824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:38:20,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131250812] [2023-12-21 04:38:20,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:38:20,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:20,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:38:20,579 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:38:20,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2023-12-21 04:38:20,773 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2023-12-21 04:38:20,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:38:20,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-21 04:38:20,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:38:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 4401 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:23,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:38:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 4401 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:26,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131250812] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:38:26,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:38:26,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112, 112] total 169 [2023-12-21 04:38:26,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937176302] [2023-12-21 04:38:26,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:38:26,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2023-12-21 04:38:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:38:26,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2023-12-21 04:38:26,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6445, Invalid=22285, Unknown=0, NotChecked=0, Total=28730 [2023-12-21 04:38:26,556 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 170 states, 170 states have (on average 2.3058823529411763) internal successors, (392), 169 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:38:28,748 INFO L93 Difference]: Finished difference Result 393 states and 395 transitions. [2023-12-21 04:38:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-21 04:38:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 2.3058823529411763) internal successors, (392), 169 states have internal predecessors, (392), 0 states have call successors, (0), 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 222 [2023-12-21 04:38:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:38:28,749 INFO L225 Difference]: With dead ends: 393 [2023-12-21 04:38:28,749 INFO L226 Difference]: Without dead ends: 224 [2023-12-21 04:38:28,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 277 SyntacticMatches, 109 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21979 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=11236, Invalid=39614, Unknown=0, NotChecked=0, Total=50850 [2023-12-21 04:38:28,751 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:38:28,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 732 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:38:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-21 04:38:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-12-21 04:38:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.0089686098654709) internal successors, (225), 223 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2023-12-21 04:38:28,776 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 222 [2023-12-21 04:38:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:38:28,776 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2023-12-21 04:38:28,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 2.3058823529411763) internal successors, (392), 169 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2023-12-21 04:38:28,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-21 04:38:28,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:38:28,777 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1, 1] [2023-12-21 04:38:28,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2023-12-21 04:38:28,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:28,982 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:38:28,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:38:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1372380081, now seen corresponding path program 108 times [2023-12-21 04:38:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:38:28,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674477740] [2023-12-21 04:38:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:38:28,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:38:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:38:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 1485 proven. 4456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:30,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:38:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674477740] [2023-12-21 04:38:30,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674477740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:38:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187213908] [2023-12-21 04:38:30,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:38:30,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:38:30,891 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:38:30,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2023-12-21 04:38:31,097 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2023-12-21 04:38:31,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:38:31,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-21 04:38:31,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:38:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 1540 proven. 4401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:31,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:38:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 1540 proven. 4401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:32,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187213908] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:38:32,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:38:32,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 60 [2023-12-21 04:38:32,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158813876] [2023-12-21 04:38:32,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:38:32,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 04:38:32,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:38:32,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 04:38:32,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1661, Invalid=1999, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 04:38:32,583 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 61 states, 61 states have (on average 3.721311475409836) internal successors, (227), 60 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:38:33,241 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2023-12-21 04:38:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-21 04:38:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.721311475409836) internal successors, (227), 60 states have internal predecessors, (227), 0 states have call successors, (0), 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 223 [2023-12-21 04:38:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:38:33,242 INFO L225 Difference]: With dead ends: 235 [2023-12-21 04:38:33,242 INFO L226 Difference]: Without dead ends: 233 [2023-12-21 04:38:33,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 387 SyntacticMatches, 110 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6539 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5020, Invalid=8552, Unknown=0, NotChecked=0, Total=13572 [2023-12-21 04:38:33,244 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 61 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:38:33,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 24 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:38:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-21 04:38:33,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 227. [2023-12-21 04:38:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.008849557522124) internal successors, (228), 226 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:33,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2023-12-21 04:38:33,261 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 223 [2023-12-21 04:38:33,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:38:33,261 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2023-12-21 04:38:33,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.721311475409836) internal successors, (227), 60 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2023-12-21 04:38:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-21 04:38:33,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:38:33,262 INFO L195 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 1, 1, 1, 1, 1] [2023-12-21 04:38:33,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2023-12-21 04:38:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2023-12-21 04:38:33,468 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:38:33,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:38:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash 786122728, now seen corresponding path program 109 times [2023-12-21 04:38:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:38:33,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532336317] [2023-12-21 04:38:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:38:33,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:38:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:38:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 4402 proven. 1703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:36,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:38:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532336317] [2023-12-21 04:38:36,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532336317] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:38:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771734280] [2023-12-21 04:38:36,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:38:36,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:36,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:38:36,800 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:38:36,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2023-12-21 04:38:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:38:36,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-21 04:38:36,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:38:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 4565 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:40,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:38:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 4565 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:42,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771734280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:38:42,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:38:42,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114, 114] total 172 [2023-12-21 04:38:42,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816216013] [2023-12-21 04:38:42,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:38:42,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2023-12-21 04:38:42,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:38:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2023-12-21 04:38:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6674, Invalid=23082, Unknown=0, NotChecked=0, Total=29756 [2023-12-21 04:38:42,273 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand has 173 states, 173 states have (on average 2.30635838150289) internal successors, (399), 172 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) [2023-12-21 04:38:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:38:43,901 INFO L93 Difference]: Finished difference Result 400 states and 402 transitions. [2023-12-21 04:38:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-12-21 04:38:43,901 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 2.30635838150289) internal successors, (399), 172 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 226 [2023-12-21 04:38:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:38:43,902 INFO L225 Difference]: With dead ends: 400 [2023-12-21 04:38:43,902 INFO L226 Difference]: Without dead ends: 228 [2023-12-21 04:38:43,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 282 SyntacticMatches, 111 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22771 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=11636, Invalid=41034, Unknown=0, NotChecked=0, Total=52670 [2023-12-21 04:38:43,906 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 8 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:38:43,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 469 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:38:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-21 04:38:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2023-12-21 04:38:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 227 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:43,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 229 transitions. [2023-12-21 04:38:43,924 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 229 transitions. Word has length 226 [2023-12-21 04:38:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:38:43,924 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 229 transitions. [2023-12-21 04:38:43,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 2.30635838150289) internal successors, (399), 172 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) [2023-12-21 04:38:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 229 transitions. [2023-12-21 04:38:43,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-21 04:38:43,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:38:43,925 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1, 1] [2023-12-21 04:38:43,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2023-12-21 04:38:44,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:44,131 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:38:44,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:38:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1679983309, now seen corresponding path program 110 times [2023-12-21 04:38:44,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:38:44,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731030939] [2023-12-21 04:38:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:38:44,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:38:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:38:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 1540 proven. 4621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:38:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731030939] [2023-12-21 04:38:46,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731030939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:38:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656963960] [2023-12-21 04:38:46,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:38:46,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:46,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:38:46,239 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:38:46,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2023-12-21 04:38:46,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:38:46,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:38:46,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 118 conjunts are in the unsatisfiable core [2023-12-21 04:38:46,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:38:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 1596 proven. 4565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:46,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:38:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 1596 proven. 4565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656963960] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:38:48,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:38:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 61 [2023-12-21 04:38:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923333509] [2023-12-21 04:38:48,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:38:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-21 04:38:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:38:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-21 04:38:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1719, Invalid=2063, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 04:38:48,351 INFO L87 Difference]: Start difference. First operand 228 states and 229 transitions. Second operand has 62 states, 62 states have (on average 3.725806451612903) internal successors, (231), 61 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:38:49,390 INFO L93 Difference]: Finished difference Result 239 states and 240 transitions. [2023-12-21 04:38:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-21 04:38:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.725806451612903) internal successors, (231), 61 states have internal predecessors, (231), 0 states have call successors, (0), 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 227 [2023-12-21 04:38:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:38:49,391 INFO L225 Difference]: With dead ends: 239 [2023-12-21 04:38:49,391 INFO L226 Difference]: Without dead ends: 237 [2023-12-21 04:38:49,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 394 SyntacticMatches, 112 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6770 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5195, Invalid=8847, Unknown=0, NotChecked=0, Total=14042 [2023-12-21 04:38:49,392 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 120 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:38:49,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 21 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:38:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-21 04:38:49,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2023-12-21 04:38:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.008695652173913) internal successors, (232), 230 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2023-12-21 04:38:49,410 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 227 [2023-12-21 04:38:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:38:49,410 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2023-12-21 04:38:49,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.725806451612903) internal successors, (231), 61 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:38:49,410 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2023-12-21 04:38:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-21 04:38:49,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:38:49,411 INFO L195 NwaCegarLoop]: trace histogram [57, 56, 56, 56, 1, 1, 1, 1, 1] [2023-12-21 04:38:49,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2023-12-21 04:38:49,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2023-12-21 04:38:49,617 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:38:49,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:38:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash -866321588, now seen corresponding path program 111 times [2023-12-21 04:38:49,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:38:49,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073678183] [2023-12-21 04:38:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:38:49,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:38:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:38:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 4566 proven. 1762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:53,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:38:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073678183] [2023-12-21 04:38:53,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073678183] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:38:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553864607] [2023-12-21 04:38:53,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:38:53,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:38:53,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:38:53,275 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:38:53,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2023-12-21 04:38:53,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2023-12-21 04:38:53,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:38:53,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-21 04:38:53,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:38:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 4732 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:56,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:38:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 4732 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:38:58,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553864607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:38:58,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:38:58,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116, 116] total 175 [2023-12-21 04:38:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463722019] [2023-12-21 04:38:58,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:38:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2023-12-21 04:38:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:38:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2023-12-21 04:38:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6907, Invalid=23893, Unknown=0, NotChecked=0, Total=30800 [2023-12-21 04:38:58,836 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 176 states, 176 states have (on average 2.3068181818181817) internal successors, (406), 175 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:39:00,584 INFO L93 Difference]: Finished difference Result 407 states and 409 transitions. [2023-12-21 04:39:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-12-21 04:39:00,584 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 2.3068181818181817) internal successors, (406), 175 states have internal predecessors, (406), 0 states have call successors, (0), 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 230 [2023-12-21 04:39:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:39:00,585 INFO L225 Difference]: With dead ends: 407 [2023-12-21 04:39:00,585 INFO L226 Difference]: Without dead ends: 232 [2023-12-21 04:39:00,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 287 SyntacticMatches, 113 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23577 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=12043, Invalid=42479, Unknown=0, NotChecked=0, Total=54522 [2023-12-21 04:39:00,587 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 8 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:39:00,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 725 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:39:00,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-21 04:39:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-12-21 04:39:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 231 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2023-12-21 04:39:00,625 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 230 [2023-12-21 04:39:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:39:00,625 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2023-12-21 04:39:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 2.3068181818181817) internal successors, (406), 175 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2023-12-21 04:39:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 04:39:00,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:39:00,626 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1, 1] [2023-12-21 04:39:00,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2023-12-21 04:39:00,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2023-12-21 04:39:00,832 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:39:00,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:39:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1142045617, now seen corresponding path program 112 times [2023-12-21 04:39:00,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:39:00,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133471435] [2023-12-21 04:39:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:39:00,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:39:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:39:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6385 backedges. 1596 proven. 4789 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:39:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133471435] [2023-12-21 04:39:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133471435] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:39:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413903206] [2023-12-21 04:39:02,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:39:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:39:02,870 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:39:02,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2023-12-21 04:39:03,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:39:03,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:39:03,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 120 conjunts are in the unsatisfiable core [2023-12-21 04:39:03,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:39:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6385 backedges. 1653 proven. 4732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:03,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:39:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6385 backedges. 1653 proven. 4732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:04,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413903206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:39:04,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:39:04,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 62 [2023-12-21 04:39:04,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616442316] [2023-12-21 04:39:04,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:39:04,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-21 04:39:04,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:39:04,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-21 04:39:04,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1778, Invalid=2128, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 04:39:04,693 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 63 states, 63 states have (on average 3.7301587301587302) internal successors, (235), 62 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:05,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:39:05,384 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2023-12-21 04:39:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-12-21 04:39:05,384 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.7301587301587302) internal successors, (235), 62 states have internal predecessors, (235), 0 states have call successors, (0), 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 231 [2023-12-21 04:39:05,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:39:05,385 INFO L225 Difference]: With dead ends: 243 [2023-12-21 04:39:05,385 INFO L226 Difference]: Without dead ends: 241 [2023-12-21 04:39:05,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 401 SyntacticMatches, 114 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7005 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5373, Invalid=9147, Unknown=0, NotChecked=0, Total=14520 [2023-12-21 04:39:05,386 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 122 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:39:05,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 29 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:39:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-21 04:39:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2023-12-21 04:39:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.0085470085470085) internal successors, (236), 234 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2023-12-21 04:39:05,404 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 231 [2023-12-21 04:39:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:39:05,404 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2023-12-21 04:39:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.7301587301587302) internal successors, (235), 62 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2023-12-21 04:39:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 04:39:05,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:39:05,405 INFO L195 NwaCegarLoop]: trace histogram [58, 57, 57, 57, 1, 1, 1, 1, 1] [2023-12-21 04:39:05,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2023-12-21 04:39:05,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:05,610 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:39:05,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:39:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2045122584, now seen corresponding path program 113 times [2023-12-21 04:39:05,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:39:05,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411097791] [2023-12-21 04:39:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:39:05,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:39:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:39:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 4733 proven. 1822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:39:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411097791] [2023-12-21 04:39:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411097791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:39:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696860482] [2023-12-21 04:39:09,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:39:09,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:39:09,374 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:39:09,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2023-12-21 04:39:09,593 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2023-12-21 04:39:09,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:39:09,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 118 conjunts are in the unsatisfiable core [2023-12-21 04:39:09,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:39:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 4902 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:13,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:39:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 4902 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696860482] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:39:16,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:39:16,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118, 118] total 178 [2023-12-21 04:39:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807784339] [2023-12-21 04:39:16,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:39:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2023-12-21 04:39:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:39:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2023-12-21 04:39:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7144, Invalid=24718, Unknown=0, NotChecked=0, Total=31862 [2023-12-21 04:39:16,116 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand has 179 states, 179 states have (on average 2.3072625698324023) internal successors, (413), 178 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:39:17,853 INFO L93 Difference]: Finished difference Result 414 states and 416 transitions. [2023-12-21 04:39:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-21 04:39:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 2.3072625698324023) internal successors, (413), 178 states have internal predecessors, (413), 0 states have call successors, (0), 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 234 [2023-12-21 04:39:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:39:17,854 INFO L225 Difference]: With dead ends: 414 [2023-12-21 04:39:17,854 INFO L226 Difference]: Without dead ends: 236 [2023-12-21 04:39:17,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 292 SyntacticMatches, 115 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24397 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=12457, Invalid=43949, Unknown=0, NotChecked=0, Total=56406 [2023-12-21 04:39:17,856 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 8 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:39:17,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 589 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:39:17,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-21 04:39:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2023-12-21 04:39:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.0085106382978724) internal successors, (237), 235 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2023-12-21 04:39:17,874 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 234 [2023-12-21 04:39:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:39:17,874 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2023-12-21 04:39:17,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 2.3072625698324023) internal successors, (413), 178 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2023-12-21 04:39:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-21 04:39:17,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:39:17,875 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1, 1] [2023-12-21 04:39:17,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2023-12-21 04:39:18,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2023-12-21 04:39:18,081 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:39:18,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:39:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1497469491, now seen corresponding path program 114 times [2023-12-21 04:39:18,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:39:18,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937053003] [2023-12-21 04:39:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:39:18,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:39:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:39:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 1653 proven. 4960 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:20,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:39:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937053003] [2023-12-21 04:39:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937053003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:39:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417082272] [2023-12-21 04:39:20,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:39:20,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:20,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:39:20,233 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:39:20,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2023-12-21 04:39:20,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2023-12-21 04:39:20,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:39:20,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 122 conjunts are in the unsatisfiable core [2023-12-21 04:39:20,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:39:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 1711 proven. 4902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:20,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:39:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 1711 proven. 4902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417082272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:39:22,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:39:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 63 [2023-12-21 04:39:22,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538909106] [2023-12-21 04:39:22,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:39:22,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 04:39:22,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:39:22,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 04:39:22,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1838, Invalid=2194, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 04:39:22,308 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand has 64 states, 64 states have (on average 3.734375) internal successors, (239), 63 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:39:23,109 INFO L93 Difference]: Finished difference Result 247 states and 248 transitions. [2023-12-21 04:39:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-12-21 04:39:23,110 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.734375) internal successors, (239), 63 states have internal predecessors, (239), 0 states have call successors, (0), 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 235 [2023-12-21 04:39:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:39:23,110 INFO L225 Difference]: With dead ends: 247 [2023-12-21 04:39:23,110 INFO L226 Difference]: Without dead ends: 245 [2023-12-21 04:39:23,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 408 SyntacticMatches, 116 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7244 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5554, Invalid=9452, Unknown=0, NotChecked=0, Total=15006 [2023-12-21 04:39:23,112 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 66 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:39:23,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:39:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-21 04:39:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 239. [2023-12-21 04:39:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 238 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2023-12-21 04:39:23,140 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 235 [2023-12-21 04:39:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:39:23,140 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2023-12-21 04:39:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.734375) internal successors, (239), 63 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2023-12-21 04:39:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-21 04:39:23,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:39:23,141 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 1, 1, 1, 1, 1] [2023-12-21 04:39:23,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2023-12-21 04:39:23,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2023-12-21 04:39:23,346 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:39:23,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:39:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash 716517452, now seen corresponding path program 115 times [2023-12-21 04:39:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:39:23,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448141621] [2023-12-21 04:39:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:39:23,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:39:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:39:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 4903 proven. 1883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:39:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448141621] [2023-12-21 04:39:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448141621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:39:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10813422] [2023-12-21 04:39:27,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:39:27,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:27,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:39:27,128 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:39:27,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2023-12-21 04:39:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:39:27,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 120 conjunts are in the unsatisfiable core [2023-12-21 04:39:27,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:39:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 5075 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:30,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:39:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 5075 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:32,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10813422] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:39:32,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:39:32,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120, 120] total 181 [2023-12-21 04:39:32,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124345766] [2023-12-21 04:39:32,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:39:32,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2023-12-21 04:39:32,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:39:32,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2023-12-21 04:39:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7385, Invalid=25557, Unknown=0, NotChecked=0, Total=32942 [2023-12-21 04:39:32,720 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 182 states, 182 states have (on average 2.3076923076923075) internal successors, (420), 181 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) [2023-12-21 04:39:35,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:39:35,339 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2023-12-21 04:39:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-12-21 04:39:35,339 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 182 states have (on average 2.3076923076923075) internal successors, (420), 181 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 238 [2023-12-21 04:39:35,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:39:35,339 INFO L225 Difference]: With dead ends: 421 [2023-12-21 04:39:35,339 INFO L226 Difference]: Without dead ends: 240 [2023-12-21 04:39:35,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 297 SyntacticMatches, 117 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25231 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=12878, Invalid=45444, Unknown=0, NotChecked=0, Total=58322 [2023-12-21 04:39:35,342 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 8 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:39:35,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 646 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:39:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-21 04:39:35,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2023-12-21 04:39:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.00836820083682) internal successors, (241), 239 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2023-12-21 04:39:35,361 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 238 [2023-12-21 04:39:35,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:39:35,361 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2023-12-21 04:39:35,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 182 states have (on average 2.3076923076923075) internal successors, (420), 181 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) [2023-12-21 04:39:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2023-12-21 04:39:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-21 04:39:35,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:39:35,362 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1, 1] [2023-12-21 04:39:35,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2023-12-21 04:39:35,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:35,568 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:39:35,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:39:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1205191759, now seen corresponding path program 116 times [2023-12-21 04:39:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:39:35,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925723289] [2023-12-21 04:39:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:39:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:39:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:39:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6845 backedges. 1711 proven. 5134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:37,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:39:37,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925723289] [2023-12-21 04:39:37,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925723289] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:39:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766349169] [2023-12-21 04:39:37,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:39:37,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:39:37,849 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:39:37,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2023-12-21 04:39:37,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:39:37,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:39:37,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 124 conjunts are in the unsatisfiable core [2023-12-21 04:39:38,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:39:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6845 backedges. 1770 proven. 5075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:38,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:39:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6845 backedges. 1770 proven. 5075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766349169] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:39:39,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:39:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 64 [2023-12-21 04:39:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772385054] [2023-12-21 04:39:39,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:39:39,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 04:39:39,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:39:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 04:39:39,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1899, Invalid=2261, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 04:39:39,748 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 65 states, 65 states have (on average 3.7384615384615385) internal successors, (243), 64 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:39:40,473 INFO L93 Difference]: Finished difference Result 251 states and 252 transitions. [2023-12-21 04:39:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-21 04:39:40,473 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.7384615384615385) internal successors, (243), 64 states have internal predecessors, (243), 0 states have call successors, (0), 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 239 [2023-12-21 04:39:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:39:40,474 INFO L225 Difference]: With dead ends: 251 [2023-12-21 04:39:40,474 INFO L226 Difference]: Without dead ends: 249 [2023-12-21 04:39:40,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 415 SyntacticMatches, 118 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7487 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5738, Invalid=9762, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 04:39:40,476 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 124 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:39:40,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 19 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:39:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-21 04:39:40,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 243. [2023-12-21 04:39:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.0082644628099173) internal successors, (244), 242 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2023-12-21 04:39:40,495 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 239 [2023-12-21 04:39:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:39:40,495 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2023-12-21 04:39:40,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.7384615384615385) internal successors, (243), 64 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2023-12-21 04:39:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-21 04:39:40,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:39:40,496 INFO L195 NwaCegarLoop]: trace histogram [60, 59, 59, 59, 1, 1, 1, 1, 1] [2023-12-21 04:39:40,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2023-12-21 04:39:40,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:40,702 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:39:40,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:39:40,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2063722472, now seen corresponding path program 117 times [2023-12-21 04:39:40,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:39:40,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521840769] [2023-12-21 04:39:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:39:40,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:39:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:39:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 5076 proven. 1945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:44,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:39:44,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521840769] [2023-12-21 04:39:44,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521840769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:39:44,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971724090] [2023-12-21 04:39:44,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:39:44,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:44,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:39:44,710 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:39:44,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2023-12-21 04:39:44,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2023-12-21 04:39:44,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:39:44,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 122 conjunts are in the unsatisfiable core [2023-12-21 04:39:44,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:39:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 5251 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:48,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:39:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 5251 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:50,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971724090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:39:50,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:39:50,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122, 122] total 184 [2023-12-21 04:39:50,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813123488] [2023-12-21 04:39:50,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:39:50,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2023-12-21 04:39:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:39:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2023-12-21 04:39:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7630, Invalid=26410, Unknown=0, NotChecked=0, Total=34040 [2023-12-21 04:39:50,646 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand has 185 states, 185 states have (on average 2.308108108108108) internal successors, (427), 184 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:39:52,684 INFO L93 Difference]: Finished difference Result 428 states and 430 transitions. [2023-12-21 04:39:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-12-21 04:39:52,685 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 2.308108108108108) internal successors, (427), 184 states have internal predecessors, (427), 0 states have call successors, (0), 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 242 [2023-12-21 04:39:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:39:52,685 INFO L225 Difference]: With dead ends: 428 [2023-12-21 04:39:52,685 INFO L226 Difference]: Without dead ends: 244 [2023-12-21 04:39:52,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 302 SyntacticMatches, 119 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26079 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=13306, Invalid=46964, Unknown=0, NotChecked=0, Total=60270 [2023-12-21 04:39:52,688 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 8 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:39:52,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 839 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:39:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-21 04:39:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2023-12-21 04:39:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.008230452674897) internal successors, (245), 243 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2023-12-21 04:39:52,708 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 242 [2023-12-21 04:39:52,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:39:52,708 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 245 transitions. [2023-12-21 04:39:52,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 2.308108108108108) internal successors, (427), 184 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:52,708 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 245 transitions. [2023-12-21 04:39:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-21 04:39:52,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:39:52,709 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1, 1] [2023-12-21 04:39:52,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2023-12-21 04:39:52,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2023-12-21 04:39:52,915 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:39:52,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:39:52,915 INFO L85 PathProgramCache]: Analyzing trace with hash -427247411, now seen corresponding path program 118 times [2023-12-21 04:39:52,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:39:52,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453457359] [2023-12-21 04:39:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:39:52,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:39:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:39:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7081 backedges. 1770 proven. 5311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:55,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:39:55,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453457359] [2023-12-21 04:39:55,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453457359] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:39:55,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20160257] [2023-12-21 04:39:55,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:39:55,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:39:55,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:39:55,709 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:39:55,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2023-12-21 04:39:55,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:39:55,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:39:55,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 126 conjunts are in the unsatisfiable core [2023-12-21 04:39:55,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:39:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7081 backedges. 1830 proven. 5251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:56,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:39:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7081 backedges. 1830 proven. 5251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:39:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20160257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:39:58,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:39:58,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 65 [2023-12-21 04:39:58,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572494900] [2023-12-21 04:39:58,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:39:58,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-21 04:39:58,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:39:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-21 04:39:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1961, Invalid=2329, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 04:39:58,637 INFO L87 Difference]: Start difference. First operand 244 states and 245 transitions. Second operand has 66 states, 66 states have (on average 3.742424242424242) internal successors, (247), 65 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:39:59,369 INFO L93 Difference]: Finished difference Result 255 states and 256 transitions. [2023-12-21 04:39:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-21 04:39:59,369 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.742424242424242) internal successors, (247), 65 states have internal predecessors, (247), 0 states have call successors, (0), 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 243 [2023-12-21 04:39:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:39:59,370 INFO L225 Difference]: With dead ends: 255 [2023-12-21 04:39:59,370 INFO L226 Difference]: Without dead ends: 253 [2023-12-21 04:39:59,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 422 SyntacticMatches, 120 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7734 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5925, Invalid=10077, Unknown=0, NotChecked=0, Total=16002 [2023-12-21 04:39:59,371 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 68 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:39:59,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 28 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:39:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-21 04:39:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2023-12-21 04:39:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.008130081300813) internal successors, (248), 246 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2023-12-21 04:39:59,391 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 243 [2023-12-21 04:39:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:39:59,391 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2023-12-21 04:39:59,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.742424242424242) internal successors, (247), 65 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:39:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2023-12-21 04:39:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-21 04:39:59,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:39:59,392 INFO L195 NwaCegarLoop]: trace histogram [61, 60, 60, 60, 1, 1, 1, 1, 1] [2023-12-21 04:39:59,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2023-12-21 04:39:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2023-12-21 04:39:59,598 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:39:59,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:39:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2134702772, now seen corresponding path program 119 times [2023-12-21 04:39:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:39:59,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625564722] [2023-12-21 04:39:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:39:59,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:39:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:40:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 5252 proven. 2008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:03,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:40:03,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625564722] [2023-12-21 04:40:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625564722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:40:03,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003644272] [2023-12-21 04:40:03,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:40:03,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:03,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:40:03,634 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:40:03,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2023-12-21 04:40:03,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2023-12-21 04:40:03,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:40:03,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 124 conjunts are in the unsatisfiable core [2023-12-21 04:40:03,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:40:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 5430 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:07,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:40:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 5430 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:09,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003644272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:40:09,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:40:09,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124, 124] total 187 [2023-12-21 04:40:09,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943419897] [2023-12-21 04:40:09,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:40:09,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2023-12-21 04:40:09,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:40:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2023-12-21 04:40:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7879, Invalid=27277, Unknown=0, NotChecked=0, Total=35156 [2023-12-21 04:40:09,704 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 188 states, 188 states have (on average 2.3085106382978724) internal successors, (434), 187 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:40:11,776 INFO L93 Difference]: Finished difference Result 435 states and 437 transitions. [2023-12-21 04:40:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-12-21 04:40:11,776 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 188 states have (on average 2.3085106382978724) internal successors, (434), 187 states have internal predecessors, (434), 0 states have call successors, (0), 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 246 [2023-12-21 04:40:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:40:11,777 INFO L225 Difference]: With dead ends: 435 [2023-12-21 04:40:11,777 INFO L226 Difference]: Without dead ends: 248 [2023-12-21 04:40:11,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 307 SyntacticMatches, 121 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26941 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=13741, Invalid=48509, Unknown=0, NotChecked=0, Total=62250 [2023-12-21 04:40:11,779 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 8 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:40:11,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 681 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:40:11,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-21 04:40:11,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2023-12-21 04:40:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.008097165991903) internal successors, (249), 247 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2023-12-21 04:40:11,799 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 246 [2023-12-21 04:40:11,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:40:11,799 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2023-12-21 04:40:11,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 188 states have (on average 2.3085106382978724) internal successors, (434), 187 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2023-12-21 04:40:11,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-21 04:40:11,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:40:11,800 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1, 1] [2023-12-21 04:40:11,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2023-12-21 04:40:12,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:12,004 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:40:12,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:40:12,004 INFO L85 PathProgramCache]: Analyzing trace with hash 956095409, now seen corresponding path program 120 times [2023-12-21 04:40:12,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:40:12,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590468720] [2023-12-21 04:40:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:40:12,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:40:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:40:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7321 backedges. 1830 proven. 5491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:14,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:40:14,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590468720] [2023-12-21 04:40:14,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590468720] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:40:14,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045270901] [2023-12-21 04:40:14,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:40:14,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:14,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:40:14,488 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:40:14,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2023-12-21 04:40:14,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2023-12-21 04:40:14,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:40:14,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-21 04:40:14,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:40:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7321 backedges. 1891 proven. 5430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:14,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:40:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7321 backedges. 1891 proven. 5430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045270901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:40:16,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:40:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 66 [2023-12-21 04:40:16,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187783019] [2023-12-21 04:40:16,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:40:16,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-21 04:40:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:40:16,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-21 04:40:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2024, Invalid=2398, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 04:40:16,627 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 67 states, 67 states have (on average 3.746268656716418) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:40:17,647 INFO L93 Difference]: Finished difference Result 259 states and 260 transitions. [2023-12-21 04:40:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-12-21 04:40:17,647 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.746268656716418) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2023-12-21 04:40:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:40:17,648 INFO L225 Difference]: With dead ends: 259 [2023-12-21 04:40:17,648 INFO L226 Difference]: Without dead ends: 257 [2023-12-21 04:40:17,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 429 SyntacticMatches, 122 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7985 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6115, Invalid=10397, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 04:40:17,650 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 128 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:40:17,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 19 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:40:17,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-21 04:40:17,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 251. [2023-12-21 04:40:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.008) internal successors, (252), 250 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2023-12-21 04:40:17,670 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 247 [2023-12-21 04:40:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:40:17,670 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2023-12-21 04:40:17,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.746268656716418) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2023-12-21 04:40:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-21 04:40:17,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:40:17,671 INFO L195 NwaCegarLoop]: trace histogram [62, 61, 61, 61, 1, 1, 1, 1, 1] [2023-12-21 04:40:17,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2023-12-21 04:40:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:17,878 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:40:17,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:40:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1179957272, now seen corresponding path program 121 times [2023-12-21 04:40:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:40:17,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145691377] [2023-12-21 04:40:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:40:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:40:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:40:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 5431 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:22,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:40:22,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145691377] [2023-12-21 04:40:22,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145691377] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:40:22,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954756722] [2023-12-21 04:40:22,020 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:40:22,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:22,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:40:22,027 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:40:22,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2023-12-21 04:40:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:40:22,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 126 conjunts are in the unsatisfiable core [2023-12-21 04:40:22,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:40:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 5612 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:25,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:40:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 5612 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:28,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954756722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:40:28,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:40:28,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126, 126] total 190 [2023-12-21 04:40:28,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439127291] [2023-12-21 04:40:28,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:40:28,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2023-12-21 04:40:28,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:40:28,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2023-12-21 04:40:28,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8132, Invalid=28158, Unknown=0, NotChecked=0, Total=36290 [2023-12-21 04:40:28,479 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand has 191 states, 191 states have (on average 2.3089005235602094) internal successors, (441), 190 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) [2023-12-21 04:40:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:40:30,908 INFO L93 Difference]: Finished difference Result 442 states and 444 transitions. [2023-12-21 04:40:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-21 04:40:30,908 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 2.3089005235602094) internal successors, (441), 190 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 250 [2023-12-21 04:40:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:40:30,909 INFO L225 Difference]: With dead ends: 442 [2023-12-21 04:40:30,909 INFO L226 Difference]: Without dead ends: 252 [2023-12-21 04:40:30,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 312 SyntacticMatches, 123 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27817 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=14183, Invalid=50079, Unknown=0, NotChecked=0, Total=64262 [2023-12-21 04:40:30,911 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 8 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:40:30,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 807 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:40:30,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-21 04:40:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-12-21 04:40:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 251 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 253 transitions. [2023-12-21 04:40:30,934 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 253 transitions. Word has length 250 [2023-12-21 04:40:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:40:30,934 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 253 transitions. [2023-12-21 04:40:30,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 2.3089005235602094) internal successors, (441), 190 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) [2023-12-21 04:40:30,934 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 253 transitions. [2023-12-21 04:40:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-21 04:40:30,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:40:30,935 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1, 1] [2023-12-21 04:40:30,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2023-12-21 04:40:31,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:31,141 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:40:31,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:40:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2056872909, now seen corresponding path program 122 times [2023-12-21 04:40:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:40:31,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081198109] [2023-12-21 04:40:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:40:31,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:40:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:40:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7565 backedges. 1891 proven. 5674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:34,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:40:34,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081198109] [2023-12-21 04:40:34,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081198109] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:40:34,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817641011] [2023-12-21 04:40:34,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:40:34,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:34,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:40:34,180 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:40:34,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2023-12-21 04:40:34,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:40:34,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:40:34,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-21 04:40:34,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:40:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7565 backedges. 1953 proven. 5612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:34,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:40:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7565 backedges. 1953 proven. 5612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817641011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:40:36,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:40:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 67 [2023-12-21 04:40:36,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543141707] [2023-12-21 04:40:36,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:40:36,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-21 04:40:36,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:40:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-21 04:40:36,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2088, Invalid=2468, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 04:40:36,446 INFO L87 Difference]: Start difference. First operand 252 states and 253 transitions. Second operand has 68 states, 68 states have (on average 3.75) internal successors, (255), 67 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:37,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:40:37,236 INFO L93 Difference]: Finished difference Result 263 states and 264 transitions. [2023-12-21 04:40:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-12-21 04:40:37,236 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.75) internal successors, (255), 67 states have internal predecessors, (255), 0 states have call successors, (0), 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 251 [2023-12-21 04:40:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:40:37,237 INFO L225 Difference]: With dead ends: 263 [2023-12-21 04:40:37,237 INFO L226 Difference]: Without dead ends: 261 [2023-12-21 04:40:37,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 436 SyntacticMatches, 124 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8240 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6308, Invalid=10722, Unknown=0, NotChecked=0, Total=17030 [2023-12-21 04:40:37,238 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 132 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:40:37,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 27 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:40:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-21 04:40:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2023-12-21 04:40:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.0078740157480315) internal successors, (256), 254 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2023-12-21 04:40:37,259 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 251 [2023-12-21 04:40:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:40:37,259 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2023-12-21 04:40:37,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.75) internal successors, (255), 67 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2023-12-21 04:40:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-21 04:40:37,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:40:37,260 INFO L195 NwaCegarLoop]: trace histogram [63, 62, 62, 62, 1, 1, 1, 1, 1] [2023-12-21 04:40:37,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2023-12-21 04:40:37,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2023-12-21 04:40:37,466 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:40:37,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:40:37,466 INFO L85 PathProgramCache]: Analyzing trace with hash 7240268, now seen corresponding path program 123 times [2023-12-21 04:40:37,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:40:37,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255818254] [2023-12-21 04:40:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:40:37,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:40:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:40:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 5613 proven. 2137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:41,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:40:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255818254] [2023-12-21 04:40:41,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255818254] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:40:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149602011] [2023-12-21 04:40:41,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:40:41,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:41,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:40:41,686 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:40:41,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2023-12-21 04:40:41,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2023-12-21 04:40:41,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:40:41,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-21 04:40:41,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:40:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 5797 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:45,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:40:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 5797 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149602011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:40:48,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:40:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 193 [2023-12-21 04:40:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484119346] [2023-12-21 04:40:48,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:40:48,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-12-21 04:40:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:40:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-12-21 04:40:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8389, Invalid=29053, Unknown=0, NotChecked=0, Total=37442 [2023-12-21 04:40:48,177 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 194 states, 194 states have (on average 2.3092783505154637) internal successors, (448), 193 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:50,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:40:50,234 INFO L93 Difference]: Finished difference Result 449 states and 451 transitions. [2023-12-21 04:40:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2023-12-21 04:40:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 2.3092783505154637) internal successors, (448), 193 states have internal predecessors, (448), 0 states have call successors, (0), 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 254 [2023-12-21 04:40:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:40:50,235 INFO L225 Difference]: With dead ends: 449 [2023-12-21 04:40:50,235 INFO L226 Difference]: Without dead ends: 256 [2023-12-21 04:40:50,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 317 SyntacticMatches, 125 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28707 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=14632, Invalid=51674, Unknown=0, NotChecked=0, Total=66306 [2023-12-21 04:40:50,239 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 8 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:40:50,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 696 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:40:50,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-21 04:40:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-12-21 04:40:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.007843137254902) internal successors, (257), 255 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) [2023-12-21 04:40:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2023-12-21 04:40:50,261 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 254 [2023-12-21 04:40:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:40:50,261 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2023-12-21 04:40:50,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 2.3092783505154637) internal successors, (448), 193 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:40:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2023-12-21 04:40:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-21 04:40:50,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:40:50,262 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1, 1] [2023-12-21 04:40:50,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2023-12-21 04:40:50,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2023-12-21 04:40:50,469 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:40:50,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:40:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash 594680753, now seen corresponding path program 124 times [2023-12-21 04:40:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:40:50,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044966627] [2023-12-21 04:40:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:40:50,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:40:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:40:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7813 backedges. 1953 proven. 5860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:53,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:40:53,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044966627] [2023-12-21 04:40:53,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044966627] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:40:53,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32960515] [2023-12-21 04:40:53,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:40:53,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:40:53,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:40:53,688 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:40:53,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2023-12-21 04:40:53,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:40:53,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:40:53,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 132 conjunts are in the unsatisfiable core [2023-12-21 04:40:53,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:40:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7813 backedges. 2016 proven. 5797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:54,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:40:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7813 backedges. 2016 proven. 5797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:40:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32960515] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:40:56,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:40:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 68 [2023-12-21 04:40:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233645142] [2023-12-21 04:40:56,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:40:56,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 04:40:56,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:40:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 04:40:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2153, Invalid=2539, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 04:40:56,007 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 69 states, 69 states have (on average 3.753623188405797) internal successors, (259), 68 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) [2023-12-21 04:40:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:40:56,827 INFO L93 Difference]: Finished difference Result 267 states and 268 transitions. [2023-12-21 04:40:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2023-12-21 04:40:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.753623188405797) internal successors, (259), 68 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 255 [2023-12-21 04:40:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:40:56,827 INFO L225 Difference]: With dead ends: 267 [2023-12-21 04:40:56,827 INFO L226 Difference]: Without dead ends: 265 [2023-12-21 04:40:56,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 443 SyntacticMatches, 126 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8499 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6504, Invalid=11052, Unknown=0, NotChecked=0, Total=17556 [2023-12-21 04:40:56,829 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 69 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:40:56,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 28 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:40:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-21 04:40:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2023-12-21 04:40:56,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.0077519379844961) internal successors, (260), 258 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) [2023-12-21 04:40:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2023-12-21 04:40:56,851 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 255 [2023-12-21 04:40:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:40:56,851 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2023-12-21 04:40:56,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.753623188405797) internal successors, (259), 68 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) [2023-12-21 04:40:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2023-12-21 04:40:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-21 04:40:56,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:40:56,852 INFO L195 NwaCegarLoop]: trace histogram [64, 63, 63, 63, 1, 1, 1, 1, 1] [2023-12-21 04:40:56,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2023-12-21 04:40:57,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2023-12-21 04:40:57,058 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:40:57,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:40:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash -600963096, now seen corresponding path program 125 times [2023-12-21 04:40:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:40:57,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253926833] [2023-12-21 04:40:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:40:57,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:40:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:41:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 5798 proven. 2203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:01,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:41:01,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253926833] [2023-12-21 04:41:01,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253926833] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:41:01,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354337463] [2023-12-21 04:41:01,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:41:01,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:41:01,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:41:01,433 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:41:01,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2023-12-21 04:41:01,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2023-12-21 04:41:01,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:41:01,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-21 04:41:01,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:41:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 5985 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:06,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:41:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 5985 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354337463] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:41:09,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:41:09,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 196 [2023-12-21 04:41:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446599214] [2023-12-21 04:41:09,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:41:09,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2023-12-21 04:41:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:41:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2023-12-21 04:41:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8650, Invalid=29962, Unknown=0, NotChecked=0, Total=38612 [2023-12-21 04:41:09,014 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand has 197 states, 197 states have (on average 2.3096446700507616) internal successors, (455), 196 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:41:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:41:11,167 INFO L93 Difference]: Finished difference Result 456 states and 458 transitions. [2023-12-21 04:41:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-12-21 04:41:11,167 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 2.3096446700507616) internal successors, (455), 196 states have internal predecessors, (455), 0 states have call successors, (0), 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 [2023-12-21 04:41:11,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:41:11,167 INFO L225 Difference]: With dead ends: 456 [2023-12-21 04:41:11,168 INFO L226 Difference]: Without dead ends: 260 [2023-12-21 04:41:11,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 322 SyntacticMatches, 127 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29611 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=15088, Invalid=53294, Unknown=0, NotChecked=0, Total=68382 [2023-12-21 04:41:11,170 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 8 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:41:11,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 796 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:41:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-21 04:41:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-12-21 04:41:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.0077220077220077) internal successors, (261), 259 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) [2023-12-21 04:41:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 261 transitions. [2023-12-21 04:41:11,192 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 261 transitions. Word has length 258 [2023-12-21 04:41:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:41:11,192 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 261 transitions. [2023-12-21 04:41:11,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 2.3096446700507616) internal successors, (455), 196 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:41:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 261 transitions. [2023-12-21 04:41:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-21 04:41:11,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:41:11,193 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1, 1] [2023-12-21 04:41:11,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2023-12-21 04:41:11,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:41:11,399 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:41:11,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:41:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1475842355, now seen corresponding path program 126 times [2023-12-21 04:41:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:41:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382162206] [2023-12-21 04:41:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:41:11,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:41:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:41:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8065 backedges. 2016 proven. 6049 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:13,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:41:13,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382162206] [2023-12-21 04:41:13,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382162206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:41:13,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686772973] [2023-12-21 04:41:13,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:41:13,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:41:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:41:13,976 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:41:13,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2023-12-21 04:41:14,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2023-12-21 04:41:14,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:41:14,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 134 conjunts are in the unsatisfiable core [2023-12-21 04:41:14,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:41:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8065 backedges. 2080 proven. 5985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:14,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:41:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8065 backedges. 2080 proven. 5985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686772973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:41:16,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:41:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 69 [2023-12-21 04:41:16,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265628719] [2023-12-21 04:41:16,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:41:16,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-21 04:41:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:41:16,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-21 04:41:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2219, Invalid=2611, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 04:41:16,194 INFO L87 Difference]: Start difference. First operand 260 states and 261 transitions. Second operand has 70 states, 70 states have (on average 3.757142857142857) internal successors, (263), 69 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) [2023-12-21 04:41:17,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:41:17,126 INFO L93 Difference]: Finished difference Result 271 states and 272 transitions. [2023-12-21 04:41:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-12-21 04:41:17,127 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.757142857142857) internal successors, (263), 69 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 259 [2023-12-21 04:41:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:41:17,128 INFO L225 Difference]: With dead ends: 271 [2023-12-21 04:41:17,128 INFO L226 Difference]: Without dead ends: 269 [2023-12-21 04:41:17,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 450 SyntacticMatches, 128 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8762 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6703, Invalid=11387, Unknown=0, NotChecked=0, Total=18090 [2023-12-21 04:41:17,130 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 72 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:41:17,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 28 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:41:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-21 04:41:17,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2023-12-21 04:41:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 262 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) [2023-12-21 04:41:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2023-12-21 04:41:17,152 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 259 [2023-12-21 04:41:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:41:17,152 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2023-12-21 04:41:17,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.757142857142857) internal successors, (263), 69 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) [2023-12-21 04:41:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2023-12-21 04:41:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-21 04:41:17,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:41:17,153 INFO L195 NwaCegarLoop]: trace histogram [65, 64, 64, 64, 1, 1, 1, 1, 1] [2023-12-21 04:41:17,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2023-12-21 04:41:17,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:41:17,356 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:41:17,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:41:17,356 INFO L85 PathProgramCache]: Analyzing trace with hash 765431628, now seen corresponding path program 127 times [2023-12-21 04:41:17,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:41:17,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805872894] [2023-12-21 04:41:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:41:17,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:41:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:41:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 5986 proven. 2270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:21,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:41:21,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805872894] [2023-12-21 04:41:21,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805872894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:41:21,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498205865] [2023-12-21 04:41:21,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:41:21,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:41:21,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:41:21,888 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:41:21,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2023-12-21 04:41:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:41:22,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 132 conjunts are in the unsatisfiable core [2023-12-21 04:41:22,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:41:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 6176 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:25,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:41:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 6176 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498205865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:41:28,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:41:28,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132, 132] total 199 [2023-12-21 04:41:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614953943] [2023-12-21 04:41:28,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:41:28,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2023-12-21 04:41:28,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:41:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2023-12-21 04:41:28,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8915, Invalid=30885, Unknown=0, NotChecked=0, Total=39800 [2023-12-21 04:41:28,658 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 200 states, 200 states have (on average 2.31) internal successors, (462), 199 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:41:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:41:31,461 INFO L93 Difference]: Finished difference Result 463 states and 465 transitions. [2023-12-21 04:41:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-12-21 04:41:31,462 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 200 states have (on average 2.31) internal successors, (462), 199 states have internal predecessors, (462), 0 states have call successors, (0), 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 [2023-12-21 04:41:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:41:31,462 INFO L225 Difference]: With dead ends: 463 [2023-12-21 04:41:31,462 INFO L226 Difference]: Without dead ends: 264 [2023-12-21 04:41:31,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 327 SyntacticMatches, 129 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30529 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=15551, Invalid=54939, Unknown=0, NotChecked=0, Total=70490 [2023-12-21 04:41:31,465 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 8 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 04:41:31,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 928 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 04:41:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-21 04:41:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-12-21 04:41:31,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.0076045627376427) internal successors, (265), 263 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) [2023-12-21 04:41:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2023-12-21 04:41:31,488 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 262 [2023-12-21 04:41:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:41:31,488 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2023-12-21 04:41:31,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 2.31) internal successors, (462), 199 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:41:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2023-12-21 04:41:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-21 04:41:31,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:41:31,489 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1, 1] [2023-12-21 04:41:31,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2023-12-21 04:41:31,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2023-12-21 04:41:31,695 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:41:31,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:41:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash 645004209, now seen corresponding path program 128 times [2023-12-21 04:41:31,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:41:31,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228614672] [2023-12-21 04:41:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:41:31,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:41:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:41:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8321 backedges. 2080 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:34,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:41:34,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228614672] [2023-12-21 04:41:34,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228614672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:41:34,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140385040] [2023-12-21 04:41:34,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:41:34,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:41:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:41:34,792 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:41:34,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2023-12-21 04:41:34,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:41:34,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:41:34,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-21 04:41:34,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:41:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8321 backedges. 2145 proven. 6176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:35,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:41:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8321 backedges. 2145 proven. 6176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:38,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140385040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:41:38,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:41:38,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 70 [2023-12-21 04:41:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942127768] [2023-12-21 04:41:38,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:41:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-21 04:41:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:41:38,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-21 04:41:38,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2286, Invalid=2684, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 04:41:38,071 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 71 states, 71 states have (on average 3.76056338028169) internal successors, (267), 70 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) [2023-12-21 04:41:39,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:41:39,372 INFO L93 Difference]: Finished difference Result 275 states and 276 transitions. [2023-12-21 04:41:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-21 04:41:39,373 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.76056338028169) internal successors, (267), 70 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 263 [2023-12-21 04:41:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:41:39,373 INFO L225 Difference]: With dead ends: 275 [2023-12-21 04:41:39,373 INFO L226 Difference]: Without dead ends: 273 [2023-12-21 04:41:39,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 457 SyntacticMatches, 130 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9029 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6905, Invalid=11727, Unknown=0, NotChecked=0, Total=18632 [2023-12-21 04:41:39,375 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 71 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:41:39,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 26 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:41:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-21 04:41:39,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2023-12-21 04:41:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.0075187969924813) internal successors, (268), 266 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) [2023-12-21 04:41:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2023-12-21 04:41:39,398 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 263 [2023-12-21 04:41:39,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:41:39,398 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2023-12-21 04:41:39,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.76056338028169) internal successors, (267), 70 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) [2023-12-21 04:41:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2023-12-21 04:41:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-21 04:41:39,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:41:39,399 INFO L195 NwaCegarLoop]: trace histogram [66, 65, 65, 65, 1, 1, 1, 1, 1] [2023-12-21 04:41:39,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2023-12-21 04:41:39,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2023-12-21 04:41:39,605 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:41:39,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:41:39,605 INFO L85 PathProgramCache]: Analyzing trace with hash -358471704, now seen corresponding path program 129 times [2023-12-21 04:41:39,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:41:39,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644833410] [2023-12-21 04:41:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:41:39,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:41:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:41:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 6177 proven. 2338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:44,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:41:44,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644833410] [2023-12-21 04:41:44,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644833410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:41:44,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919890389] [2023-12-21 04:41:44,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:41:44,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:41:44,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:41:44,446 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:41:44,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2023-12-21 04:41:44,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2023-12-21 04:41:44,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:41:44,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 134 conjunts are in the unsatisfiable core [2023-12-21 04:41:44,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:41:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 6370 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:50,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:41:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 6370 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:41:54,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919890389] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:41:54,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:41:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134, 134] total 202 [2023-12-21 04:41:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629200282] [2023-12-21 04:41:54,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:41:54,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2023-12-21 04:41:54,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:41:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2023-12-21 04:41:54,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9184, Invalid=31822, Unknown=0, NotChecked=0, Total=41006 [2023-12-21 04:41:54,616 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand has 203 states, 203 states have (on average 2.310344827586207) internal successors, (469), 202 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:41:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:41:57,494 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2023-12-21 04:41:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-12-21 04:41:57,494 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.310344827586207) internal successors, (469), 202 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2023-12-21 04:41:57,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:41:57,495 INFO L225 Difference]: With dead ends: 470 [2023-12-21 04:41:57,495 INFO L226 Difference]: Without dead ends: 268 [2023-12-21 04:41:57,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 332 SyntacticMatches, 131 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31461 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=16021, Invalid=56609, Unknown=0, NotChecked=0, Total=72630 [2023-12-21 04:41:57,498 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 8 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:41:57,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 777 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:41:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-21 04:41:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-12-21 04:41:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 267 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) [2023-12-21 04:41:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 269 transitions. [2023-12-21 04:41:57,522 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 269 transitions. Word has length 266 [2023-12-21 04:41:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:41:57,522 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 269 transitions. [2023-12-21 04:41:57,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.310344827586207) internal successors, (469), 202 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:41:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 269 transitions. [2023-12-21 04:41:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-21 04:41:57,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:41:57,523 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1, 1] [2023-12-21 04:41:57,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2023-12-21 04:41:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:41:57,730 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:41:57,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:41:57,730 INFO L85 PathProgramCache]: Analyzing trace with hash 569235917, now seen corresponding path program 130 times [2023-12-21 04:41:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:41:57,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682314480] [2023-12-21 04:41:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:41:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:41:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:42:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8581 backedges. 2145 proven. 6436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:00,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:42:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682314480] [2023-12-21 04:42:00,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682314480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:42:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668060319] [2023-12-21 04:42:00,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:42:00,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:42:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:42:00,987 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:42:00,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2023-12-21 04:42:01,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:42:01,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:42:01,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-21 04:42:01,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:42:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8581 backedges. 2211 proven. 6370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:01,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:42:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8581 backedges. 2211 proven. 6370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:04,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668060319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:42:04,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:42:04,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 71 [2023-12-21 04:42:04,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410923342] [2023-12-21 04:42:04,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:42:04,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-21 04:42:04,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:42:04,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-21 04:42:04,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2354, Invalid=2758, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 04:42:04,168 INFO L87 Difference]: Start difference. First operand 268 states and 269 transitions. Second operand has 72 states, 72 states have (on average 3.763888888888889) internal successors, (271), 71 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) [2023-12-21 04:42:05,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:42:05,054 INFO L93 Difference]: Finished difference Result 279 states and 280 transitions. [2023-12-21 04:42:05,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-21 04:42:05,054 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.763888888888889) internal successors, (271), 71 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 267 [2023-12-21 04:42:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:42:05,055 INFO L225 Difference]: With dead ends: 279 [2023-12-21 04:42:05,055 INFO L226 Difference]: Without dead ends: 277 [2023-12-21 04:42:05,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 464 SyntacticMatches, 132 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9300 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7110, Invalid=12072, Unknown=0, NotChecked=0, Total=19182 [2023-12-21 04:42:05,056 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 140 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:42:05,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 27 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:42:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-21 04:42:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2023-12-21 04:42:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.0074074074074073) internal successors, (272), 270 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2023-12-21 04:42:05,079 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 267 [2023-12-21 04:42:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:42:05,080 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2023-12-21 04:42:05,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.763888888888889) internal successors, (271), 71 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) [2023-12-21 04:42:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2023-12-21 04:42:05,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-21 04:42:05,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:42:05,081 INFO L195 NwaCegarLoop]: trace histogram [67, 66, 66, 66, 1, 1, 1, 1, 1] [2023-12-21 04:42:05,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2023-12-21 04:42:05,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:42:05,287 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:42:05,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:42:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1581139020, now seen corresponding path program 131 times [2023-12-21 04:42:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:42:05,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915665352] [2023-12-21 04:42:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:42:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:42:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:42:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 6371 proven. 2407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:42:10,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915665352] [2023-12-21 04:42:10,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915665352] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:42:10,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731244246] [2023-12-21 04:42:10,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:42:10,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:42:10,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:42:10,399 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:42:10,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2023-12-21 04:42:10,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2023-12-21 04:42:10,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:42:10,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-21 04:42:10,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:42:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 6567 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:14,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:42:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 6567 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:19,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731244246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:42:19,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:42:19,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136, 136] total 205 [2023-12-21 04:42:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722457929] [2023-12-21 04:42:19,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:42:19,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2023-12-21 04:42:19,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:42:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2023-12-21 04:42:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9457, Invalid=32773, Unknown=0, NotChecked=0, Total=42230 [2023-12-21 04:42:19,870 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 206 states, 206 states have (on average 2.3106796116504853) internal successors, (476), 205 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:42:22,796 INFO L93 Difference]: Finished difference Result 477 states and 479 transitions. [2023-12-21 04:42:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-12-21 04:42:22,797 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 206 states have (on average 2.3106796116504853) internal successors, (476), 205 states have internal predecessors, (476), 0 states have call successors, (0), 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 [2023-12-21 04:42:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:42:22,797 INFO L225 Difference]: With dead ends: 477 [2023-12-21 04:42:22,797 INFO L226 Difference]: Without dead ends: 272 [2023-12-21 04:42:22,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 337 SyntacticMatches, 133 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32407 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=16498, Invalid=58304, Unknown=0, NotChecked=0, Total=74802 [2023-12-21 04:42:22,801 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 8 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:42:22,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 777 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:42:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-21 04:42:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-12-21 04:42:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.007380073800738) internal successors, (273), 271 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2023-12-21 04:42:22,825 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 270 [2023-12-21 04:42:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:42:22,825 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2023-12-21 04:42:22,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 206 states have (on average 2.3106796116504853) internal successors, (476), 205 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2023-12-21 04:42:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-21 04:42:22,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:42:22,826 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1, 1] [2023-12-21 04:42:22,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2023-12-21 04:42:23,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2023-12-21 04:42:23,032 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:42:23,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:42:23,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1025213519, now seen corresponding path program 132 times [2023-12-21 04:42:23,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:42:23,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439326010] [2023-12-21 04:42:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:42:23,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:42:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:42:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8845 backedges. 2211 proven. 6634 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:26,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:42:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439326010] [2023-12-21 04:42:26,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439326010] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:42:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295019644] [2023-12-21 04:42:26,365 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:42:26,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:42:26,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:42:26,366 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:42:26,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2023-12-21 04:42:26,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2023-12-21 04:42:26,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:42:26,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-21 04:42:26,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:42:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8845 backedges. 2278 proven. 6567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:26,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:42:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8845 backedges. 2278 proven. 6567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295019644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:42:29,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:42:29,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 72 [2023-12-21 04:42:29,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861203861] [2023-12-21 04:42:29,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:42:29,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-21 04:42:29,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:42:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-21 04:42:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2423, Invalid=2833, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 04:42:29,173 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 73 states, 73 states have (on average 3.767123287671233) internal successors, (275), 72 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:42:30,538 INFO L93 Difference]: Finished difference Result 283 states and 284 transitions. [2023-12-21 04:42:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2023-12-21 04:42:30,539 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.767123287671233) internal successors, (275), 72 states have internal predecessors, (275), 0 states have call successors, (0), 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 [2023-12-21 04:42:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:42:30,539 INFO L225 Difference]: With dead ends: 283 [2023-12-21 04:42:30,539 INFO L226 Difference]: Without dead ends: 281 [2023-12-21 04:42:30,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 471 SyntacticMatches, 134 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9575 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7318, Invalid=12422, Unknown=0, NotChecked=0, Total=19740 [2023-12-21 04:42:30,541 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 75 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:42:30,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 26 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:42:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-21 04:42:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 275. [2023-12-21 04:42:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 274 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2023-12-21 04:42:30,565 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 271 [2023-12-21 04:42:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:42:30,565 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2023-12-21 04:42:30,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.767123287671233) internal successors, (275), 72 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2023-12-21 04:42:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-21 04:42:30,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:42:30,566 INFO L195 NwaCegarLoop]: trace histogram [68, 67, 67, 67, 1, 1, 1, 1, 1] [2023-12-21 04:42:30,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2023-12-21 04:42:30,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2023-12-21 04:42:30,772 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:42:30,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:42:30,773 INFO L85 PathProgramCache]: Analyzing trace with hash -618682392, now seen corresponding path program 133 times [2023-12-21 04:42:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:42:30,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762925094] [2023-12-21 04:42:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:42:30,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:42:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:42:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 6568 proven. 2477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:42:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762925094] [2023-12-21 04:42:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762925094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:42:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82321350] [2023-12-21 04:42:35,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:42:35,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:42:35,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:42:35,801 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:42:35,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2023-12-21 04:42:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:42:35,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-21 04:42:35,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:42:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 6767 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:40,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:42:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 6767 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82321350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:42:43,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:42:43,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138, 138] total 208 [2023-12-21 04:42:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610527056] [2023-12-21 04:42:43,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:42:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2023-12-21 04:42:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:42:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2023-12-21 04:42:43,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9734, Invalid=33738, Unknown=0, NotChecked=0, Total=43472 [2023-12-21 04:42:43,169 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand has 209 states, 209 states have (on average 2.311004784688995) internal successors, (483), 208 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:42:45,761 INFO L93 Difference]: Finished difference Result 484 states and 486 transitions. [2023-12-21 04:42:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-12-21 04:42:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 209 states have (on average 2.311004784688995) internal successors, (483), 208 states have internal predecessors, (483), 0 states have call successors, (0), 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 274 [2023-12-21 04:42:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:42:45,762 INFO L225 Difference]: With dead ends: 484 [2023-12-21 04:42:45,762 INFO L226 Difference]: Without dead ends: 276 [2023-12-21 04:42:45,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 342 SyntacticMatches, 135 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33367 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=16982, Invalid=60024, Unknown=0, NotChecked=0, Total=77006 [2023-12-21 04:42:45,765 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 8 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:42:45,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1049 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:42:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-21 04:42:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-12-21 04:42:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 275 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2023-12-21 04:42:45,789 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 274 [2023-12-21 04:42:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:42:45,789 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2023-12-21 04:42:45,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 209 states have (on average 2.311004784688995) internal successors, (483), 208 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2023-12-21 04:42:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-21 04:42:45,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:42:45,790 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1, 1] [2023-12-21 04:42:45,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2023-12-21 04:42:45,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2023-12-21 04:42:45,996 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:42:45,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:42:45,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1990089523, now seen corresponding path program 134 times [2023-12-21 04:42:45,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:42:45,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091878633] [2023-12-21 04:42:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:42:45,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:42:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:42:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9113 backedges. 2278 proven. 6835 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:48,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:42:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091878633] [2023-12-21 04:42:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091878633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:42:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360403350] [2023-12-21 04:42:48,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:42:48,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:42:48,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:42:48,952 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:42:48,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2023-12-21 04:42:49,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:42:49,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:42:49,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 142 conjunts are in the unsatisfiable core [2023-12-21 04:42:49,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:42:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9113 backedges. 2346 proven. 6767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:49,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:42:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9113 backedges. 2346 proven. 6767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:51,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360403350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:42:51,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:42:51,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 73 [2023-12-21 04:42:51,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929429517] [2023-12-21 04:42:51,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:42:51,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 04:42:51,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:42:51,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 04:42:51,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2493, Invalid=2909, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 04:42:51,311 INFO L87 Difference]: Start difference. First operand 276 states and 277 transitions. Second operand has 74 states, 74 states have (on average 3.77027027027027) internal successors, (279), 73 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:42:52,228 INFO L93 Difference]: Finished difference Result 287 states and 288 transitions. [2023-12-21 04:42:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-12-21 04:42:52,228 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.77027027027027) internal successors, (279), 73 states have internal predecessors, (279), 0 states have call successors, (0), 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 275 [2023-12-21 04:42:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:42:52,229 INFO L225 Difference]: With dead ends: 287 [2023-12-21 04:42:52,229 INFO L226 Difference]: Without dead ends: 285 [2023-12-21 04:42:52,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 478 SyntacticMatches, 136 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9854 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7529, Invalid=12777, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 04:42:52,231 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 144 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:42:52,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 19 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:42:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-21 04:42:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 279. [2023-12-21 04:42:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.0071942446043165) internal successors, (280), 278 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:52,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2023-12-21 04:42:52,256 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 275 [2023-12-21 04:42:52,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:42:52,256 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2023-12-21 04:42:52,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.77027027027027) internal successors, (279), 73 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:42:52,256 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2023-12-21 04:42:52,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-21 04:42:52,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:42:52,257 INFO L195 NwaCegarLoop]: trace histogram [69, 68, 68, 68, 1, 1, 1, 1, 1] [2023-12-21 04:42:52,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2023-12-21 04:42:52,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2023-12-21 04:42:52,463 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:42:52,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:42:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash 976394572, now seen corresponding path program 135 times [2023-12-21 04:42:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:42:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684147337] [2023-12-21 04:42:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:42:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:42:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:42:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 6768 proven. 2548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:42:57,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:42:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684147337] [2023-12-21 04:42:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684147337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:42:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787028209] [2023-12-21 04:42:57,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:42:57,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:42:57,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:42:57,700 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:42:57,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2023-12-21 04:42:58,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2023-12-21 04:42:58,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:42:58,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-21 04:42:58,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:43:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 6970 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:02,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:43:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 6970 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787028209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:43:07,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:43:07,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140, 140] total 211 [2023-12-21 04:43:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401439961] [2023-12-21 04:43:07,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:43:07,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2023-12-21 04:43:07,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:43:07,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2023-12-21 04:43:07,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10015, Invalid=34717, Unknown=0, NotChecked=0, Total=44732 [2023-12-21 04:43:07,718 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 212 states, 212 states have (on average 2.311320754716981) internal successors, (490), 211 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) [2023-12-21 04:43:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:43:10,246 INFO L93 Difference]: Finished difference Result 491 states and 493 transitions. [2023-12-21 04:43:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-21 04:43:10,246 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 212 states have (on average 2.311320754716981) internal successors, (490), 211 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 278 [2023-12-21 04:43:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:43:10,247 INFO L225 Difference]: With dead ends: 491 [2023-12-21 04:43:10,247 INFO L226 Difference]: Without dead ends: 280 [2023-12-21 04:43:10,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 347 SyntacticMatches, 137 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34341 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=17473, Invalid=61769, Unknown=0, NotChecked=0, Total=79242 [2023-12-21 04:43:10,250 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 8 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:43:10,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 881 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:43:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-21 04:43:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-12-21 04:43:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.007168458781362) internal successors, (281), 279 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2023-12-21 04:43:10,275 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 278 [2023-12-21 04:43:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:43:10,275 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2023-12-21 04:43:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 212 states have (on average 2.311320754716981) internal successors, (490), 211 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) [2023-12-21 04:43:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2023-12-21 04:43:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-21 04:43:10,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:43:10,276 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1, 1] [2023-12-21 04:43:10,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2023-12-21 04:43:10,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2023-12-21 04:43:10,483 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:43:10,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:43:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash -877552719, now seen corresponding path program 136 times [2023-12-21 04:43:10,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:43:10,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616876769] [2023-12-21 04:43:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:43:10,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:43:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:43:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9385 backedges. 2346 proven. 7039 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:13,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:43:13,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616876769] [2023-12-21 04:43:13,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616876769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:43:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369107442] [2023-12-21 04:43:13,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:43:13,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:43:13,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:43:13,902 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:43:13,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2023-12-21 04:43:14,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:43:14,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:43:14,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 144 conjunts are in the unsatisfiable core [2023-12-21 04:43:14,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:43:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9385 backedges. 2415 proven. 6970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:14,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:43:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9385 backedges. 2415 proven. 6970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369107442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:43:17,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:43:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 74 [2023-12-21 04:43:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111577049] [2023-12-21 04:43:17,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:43:17,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-21 04:43:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:43:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-21 04:43:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2564, Invalid=2986, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 04:43:17,187 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 75 states, 75 states have (on average 3.7733333333333334) internal successors, (283), 74 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:18,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:43:18,546 INFO L93 Difference]: Finished difference Result 291 states and 292 transitions. [2023-12-21 04:43:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-12-21 04:43:18,546 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.7733333333333334) internal successors, (283), 74 states have internal predecessors, (283), 0 states have call successors, (0), 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 279 [2023-12-21 04:43:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:43:18,547 INFO L225 Difference]: With dead ends: 291 [2023-12-21 04:43:18,547 INFO L226 Difference]: Without dead ends: 289 [2023-12-21 04:43:18,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 485 SyntacticMatches, 138 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10137 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7743, Invalid=13137, Unknown=0, NotChecked=0, Total=20880 [2023-12-21 04:43:18,549 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 144 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:43:18,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 21 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:43:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-21 04:43:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 283. [2023-12-21 04:43:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.0070921985815602) internal successors, (284), 282 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2023-12-21 04:43:18,600 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 279 [2023-12-21 04:43:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:43:18,600 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2023-12-21 04:43:18,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.7733333333333334) internal successors, (283), 74 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2023-12-21 04:43:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-21 04:43:18,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:43:18,601 INFO L195 NwaCegarLoop]: trace histogram [70, 69, 69, 69, 1, 1, 1, 1, 1] [2023-12-21 04:43:18,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2023-12-21 04:43:18,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2023-12-21 04:43:18,802 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:43:18,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:43:18,802 INFO L85 PathProgramCache]: Analyzing trace with hash 297699304, now seen corresponding path program 137 times [2023-12-21 04:43:18,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:43:18,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057480295] [2023-12-21 04:43:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:43:18,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:43:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:43:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 6971 proven. 2620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:24,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:43:24,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057480295] [2023-12-21 04:43:24,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057480295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:43:24,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290271442] [2023-12-21 04:43:24,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:43:24,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:43:24,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:43:24,568 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:43:24,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2023-12-21 04:43:24,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2023-12-21 04:43:24,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:43:24,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 142 conjunts are in the unsatisfiable core [2023-12-21 04:43:24,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:43:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 7176 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:30,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:43:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 7176 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290271442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:43:33,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:43:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142, 142] total 214 [2023-12-21 04:43:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606390595] [2023-12-21 04:43:33,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:43:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2023-12-21 04:43:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:43:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2023-12-21 04:43:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10300, Invalid=35710, Unknown=0, NotChecked=0, Total=46010 [2023-12-21 04:43:33,618 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand has 215 states, 215 states have (on average 2.311627906976744) internal successors, (497), 214 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:36,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:43:36,330 INFO L93 Difference]: Finished difference Result 498 states and 500 transitions. [2023-12-21 04:43:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-21 04:43:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 2.311627906976744) internal successors, (497), 214 states have internal predecessors, (497), 0 states have call successors, (0), 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 282 [2023-12-21 04:43:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:43:36,331 INFO L225 Difference]: With dead ends: 498 [2023-12-21 04:43:36,331 INFO L226 Difference]: Without dead ends: 284 [2023-12-21 04:43:36,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 352 SyntacticMatches, 139 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35329 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=17971, Invalid=63539, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 04:43:36,335 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 8 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:43:36,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 898 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:43:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-21 04:43:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-21 04:43:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.0070671378091873) internal successors, (285), 283 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 285 transitions. [2023-12-21 04:43:36,375 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 285 transitions. Word has length 282 [2023-12-21 04:43:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:43:36,375 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 285 transitions. [2023-12-21 04:43:36,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 2.311627906976744) internal successors, (497), 214 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:36,375 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 285 transitions. [2023-12-21 04:43:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-21 04:43:36,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:43:36,376 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1, 1] [2023-12-21 04:43:36,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2023-12-21 04:43:36,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2023-12-21 04:43:36,583 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:43:36,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:43:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash -310652979, now seen corresponding path program 138 times [2023-12-21 04:43:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:43:36,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425385094] [2023-12-21 04:43:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:43:36,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:43:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:43:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9661 backedges. 2415 proven. 7246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:40,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:43:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425385094] [2023-12-21 04:43:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425385094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:43:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724417029] [2023-12-21 04:43:40,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:43:40,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:43:40,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:43:40,263 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:43:40,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2023-12-21 04:43:40,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2023-12-21 04:43:40,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:43:40,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 146 conjunts are in the unsatisfiable core [2023-12-21 04:43:40,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:43:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9661 backedges. 2485 proven. 7176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:40,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:43:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9661 backedges. 2485 proven. 7176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724417029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:43:43,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:43:43,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 75 [2023-12-21 04:43:43,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843926029] [2023-12-21 04:43:43,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:43:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-21 04:43:43,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:43:43,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-21 04:43:43,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2636, Invalid=3064, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 04:43:43,420 INFO L87 Difference]: Start difference. First operand 284 states and 285 transitions. Second operand has 76 states, 76 states have (on average 3.776315789473684) internal successors, (287), 75 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:44,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:43:44,748 INFO L93 Difference]: Finished difference Result 295 states and 296 transitions. [2023-12-21 04:43:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-21 04:43:44,749 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.776315789473684) internal successors, (287), 75 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2023-12-21 04:43:44,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:43:44,749 INFO L225 Difference]: With dead ends: 295 [2023-12-21 04:43:44,749 INFO L226 Difference]: Without dead ends: 293 [2023-12-21 04:43:44,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 492 SyntacticMatches, 140 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10424 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7960, Invalid=13502, Unknown=0, NotChecked=0, Total=21462 [2023-12-21 04:43:44,751 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 146 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:43:44,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 21 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:43:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-21 04:43:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2023-12-21 04:43:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.006993006993007) internal successors, (288), 286 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2023-12-21 04:43:44,778 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 283 [2023-12-21 04:43:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:43:44,778 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2023-12-21 04:43:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.776315789473684) internal successors, (287), 75 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:43:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2023-12-21 04:43:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-21 04:43:44,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:43:44,779 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 70, 70, 1, 1, 1, 1, 1] [2023-12-21 04:43:44,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2023-12-21 04:43:44,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2023-12-21 04:43:44,986 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:43:44,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:43:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 996445772, now seen corresponding path program 139 times [2023-12-21 04:43:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:43:44,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191461129] [2023-12-21 04:43:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:43:44,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:43:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:43:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 7177 proven. 2693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:51,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:43:51,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191461129] [2023-12-21 04:43:51,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191461129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:43:51,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572997445] [2023-12-21 04:43:51,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:43:51,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:43:51,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:43:51,961 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:43:51,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2023-12-21 04:43:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:43:52,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 144 conjunts are in the unsatisfiable core [2023-12-21 04:43:52,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:43:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 7385 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:43:56,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:44:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 7385 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:00,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572997445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:44:00,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:44:00,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144, 144] total 217 [2023-12-21 04:44:00,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756075129] [2023-12-21 04:44:00,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:44:00,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 218 states [2023-12-21 04:44:00,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:44:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2023-12-21 04:44:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10589, Invalid=36717, Unknown=0, NotChecked=0, Total=47306 [2023-12-21 04:44:00,872 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 218 states, 218 states have (on average 2.311926605504587) internal successors, (504), 217 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) [2023-12-21 04:44:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:44:03,834 INFO L93 Difference]: Finished difference Result 505 states and 507 transitions. [2023-12-21 04:44:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-12-21 04:44:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 218 states, 218 states have (on average 2.311926605504587) internal successors, (504), 217 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 286 [2023-12-21 04:44:03,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:44:03,834 INFO L225 Difference]: With dead ends: 505 [2023-12-21 04:44:03,835 INFO L226 Difference]: Without dead ends: 288 [2023-12-21 04:44:03,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 357 SyntacticMatches, 141 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36331 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=18476, Invalid=65334, Unknown=0, NotChecked=0, Total=83810 [2023-12-21 04:44:03,839 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 04:44:03,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1171 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 04:44:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-21 04:44:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-12-21 04:44:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 287 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2023-12-21 04:44:03,865 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 286 [2023-12-21 04:44:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:44:03,865 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2023-12-21 04:44:03,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 218 states, 218 states have (on average 2.311926605504587) internal successors, (504), 217 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) [2023-12-21 04:44:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2023-12-21 04:44:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-21 04:44:03,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:44:03,867 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1, 1] [2023-12-21 04:44:03,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2023-12-21 04:44:04,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:44:04,073 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:44:04,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:44:04,073 INFO L85 PathProgramCache]: Analyzing trace with hash -440312911, now seen corresponding path program 140 times [2023-12-21 04:44:04,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:44:04,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124522364] [2023-12-21 04:44:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:44:04,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:44:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:44:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9941 backedges. 2485 proven. 7456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:07,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:44:07,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124522364] [2023-12-21 04:44:07,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124522364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:44:07,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890992414] [2023-12-21 04:44:07,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:44:07,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:44:07,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:44:07,726 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:44:07,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2023-12-21 04:44:07,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:44:07,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:44:07,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 148 conjunts are in the unsatisfiable core [2023-12-21 04:44:07,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:44:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9941 backedges. 2556 proven. 7385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:08,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:44:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9941 backedges. 2556 proven. 7385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:10,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890992414] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:44:10,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:44:10,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 76 [2023-12-21 04:44:10,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863560424] [2023-12-21 04:44:10,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:44:10,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-21 04:44:10,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:44:10,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-21 04:44:10,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2709, Invalid=3143, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 04:44:10,551 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 77 states, 77 states have (on average 3.779220779220779) internal successors, (291), 76 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:44:11,588 INFO L93 Difference]: Finished difference Result 299 states and 300 transitions. [2023-12-21 04:44:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-21 04:44:11,589 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.779220779220779) internal successors, (291), 76 states have internal predecessors, (291), 0 states have call successors, (0), 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 287 [2023-12-21 04:44:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:44:11,589 INFO L225 Difference]: With dead ends: 299 [2023-12-21 04:44:11,589 INFO L226 Difference]: Without dead ends: 297 [2023-12-21 04:44:11,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 499 SyntacticMatches, 142 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10715 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=8180, Invalid=13872, Unknown=0, NotChecked=0, Total=22052 [2023-12-21 04:44:11,591 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 79 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:44:11,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 24 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:44:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-21 04:44:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2023-12-21 04:44:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.006896551724138) internal successors, (292), 290 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2023-12-21 04:44:11,618 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 287 [2023-12-21 04:44:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:44:11,618 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2023-12-21 04:44:11,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.779220779220779) internal successors, (291), 76 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2023-12-21 04:44:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-21 04:44:11,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:44:11,619 INFO L195 NwaCegarLoop]: trace histogram [72, 71, 71, 71, 1, 1, 1, 1, 1] [2023-12-21 04:44:11,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2023-12-21 04:44:11,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:44:11,826 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:44:11,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:44:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash -526989336, now seen corresponding path program 141 times [2023-12-21 04:44:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:44:11,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79343971] [2023-12-21 04:44:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:44:11,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:44:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:44:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 7386 proven. 2767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:17,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:44:17,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79343971] [2023-12-21 04:44:17,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79343971] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:44:17,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586681181] [2023-12-21 04:44:17,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:44:17,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:44:17,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:44:17,965 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:44:17,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2023-12-21 04:44:18,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2023-12-21 04:44:18,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:44:18,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 146 conjunts are in the unsatisfiable core [2023-12-21 04:44:18,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:44:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 7597 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:23,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:44:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 7597 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:27,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586681181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:44:27,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:44:27,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146, 146] total 220 [2023-12-21 04:44:27,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664544990] [2023-12-21 04:44:27,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:44:27,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2023-12-21 04:44:27,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:44:27,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2023-12-21 04:44:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10882, Invalid=37738, Unknown=0, NotChecked=0, Total=48620 [2023-12-21 04:44:27,336 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand has 221 states, 221 states have (on average 2.3122171945701355) internal successors, (511), 220 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:44:29,996 INFO L93 Difference]: Finished difference Result 512 states and 514 transitions. [2023-12-21 04:44:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2023-12-21 04:44:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 221 states have (on average 2.3122171945701355) internal successors, (511), 220 states have internal predecessors, (511), 0 states have call successors, (0), 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 290 [2023-12-21 04:44:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:44:29,997 INFO L225 Difference]: With dead ends: 512 [2023-12-21 04:44:29,997 INFO L226 Difference]: Without dead ends: 292 [2023-12-21 04:44:30,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 362 SyntacticMatches, 143 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37347 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=18988, Invalid=67154, Unknown=0, NotChecked=0, Total=86142 [2023-12-21 04:44:30,002 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 8 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:44:30,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 828 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:44:30,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-21 04:44:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2023-12-21 04:44:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.006872852233677) internal successors, (293), 291 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 293 transitions. [2023-12-21 04:44:30,029 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 293 transitions. Word has length 290 [2023-12-21 04:44:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:44:30,029 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 293 transitions. [2023-12-21 04:44:30,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 221 states have (on average 2.3122171945701355) internal successors, (511), 220 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 293 transitions. [2023-12-21 04:44:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-21 04:44:30,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:44:30,030 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1, 1] [2023-12-21 04:44:30,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2023-12-21 04:44:30,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:44:30,237 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:44:30,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:44:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1263819469, now seen corresponding path program 142 times [2023-12-21 04:44:30,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:44:30,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771740891] [2023-12-21 04:44:30,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:44:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:44:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:44:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10225 backedges. 2556 proven. 7669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:34,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:44:34,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771740891] [2023-12-21 04:44:34,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771740891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:44:34,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813700355] [2023-12-21 04:44:34,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:44:34,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:44:34,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:44:34,075 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:44:34,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2023-12-21 04:44:34,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:44:34,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:44:34,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 150 conjunts are in the unsatisfiable core [2023-12-21 04:44:34,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:44:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10225 backedges. 2628 proven. 7597 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:34,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:44:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10225 backedges. 2628 proven. 7597 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:37,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813700355] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:44:37,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:44:37,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 77 [2023-12-21 04:44:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276873208] [2023-12-21 04:44:37,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:44:37,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-21 04:44:37,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:44:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-21 04:44:37,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2783, Invalid=3223, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 04:44:37,618 INFO L87 Difference]: Start difference. First operand 292 states and 293 transitions. Second operand has 78 states, 78 states have (on average 3.782051282051282) internal successors, (295), 77 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:38,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:44:38,762 INFO L93 Difference]: Finished difference Result 303 states and 304 transitions. [2023-12-21 04:44:38,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2023-12-21 04:44:38,762 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.782051282051282) internal successors, (295), 77 states have internal predecessors, (295), 0 states have call successors, (0), 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 291 [2023-12-21 04:44:38,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:44:38,763 INFO L225 Difference]: With dead ends: 303 [2023-12-21 04:44:38,763 INFO L226 Difference]: Without dead ends: 301 [2023-12-21 04:44:38,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 506 SyntacticMatches, 144 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11010 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8403, Invalid=14247, Unknown=0, NotChecked=0, Total=22650 [2023-12-21 04:44:38,764 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 150 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:44:38,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 17 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:44:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-21 04:44:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 295. [2023-12-21 04:44:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.0068027210884354) internal successors, (296), 294 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) [2023-12-21 04:44:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2023-12-21 04:44:38,792 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 291 [2023-12-21 04:44:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:44:38,792 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2023-12-21 04:44:38,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.782051282051282) internal successors, (295), 77 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2023-12-21 04:44:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-21 04:44:38,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:44:38,793 INFO L195 NwaCegarLoop]: trace histogram [73, 72, 72, 72, 1, 1, 1, 1, 1] [2023-12-21 04:44:38,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2023-12-21 04:44:38,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:44:39,000 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:44:39,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:44:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash 767304524, now seen corresponding path program 143 times [2023-12-21 04:44:39,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:44:39,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103348693] [2023-12-21 04:44:39,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:44:39,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:44:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:44:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 7598 proven. 2842 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:45,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:44:45,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103348693] [2023-12-21 04:44:45,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103348693] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:44:45,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485064468] [2023-12-21 04:44:45,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:44:45,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:44:45,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:44:45,348 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:44:45,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2023-12-21 04:44:45,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2023-12-21 04:44:45,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:44:45,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 148 conjunts are in the unsatisfiable core [2023-12-21 04:44:45,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:44:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 7812 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:51,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:44:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 7812 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:44:55,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485064468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:44:55,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:44:55,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148, 148] total 223 [2023-12-21 04:44:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811883138] [2023-12-21 04:44:55,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:44:55,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2023-12-21 04:44:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:44:55,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2023-12-21 04:44:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11179, Invalid=38773, Unknown=0, NotChecked=0, Total=49952 [2023-12-21 04:44:55,068 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 224 states, 224 states have (on average 2.3125) internal successors, (518), 223 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:44:58,516 INFO L93 Difference]: Finished difference Result 519 states and 521 transitions. [2023-12-21 04:44:58,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-21 04:44:58,516 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 224 states have (on average 2.3125) internal successors, (518), 223 states have internal predecessors, (518), 0 states have call successors, (0), 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 294 [2023-12-21 04:44:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:44:58,516 INFO L225 Difference]: With dead ends: 519 [2023-12-21 04:44:58,516 INFO L226 Difference]: Without dead ends: 296 [2023-12-21 04:44:58,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 367 SyntacticMatches, 145 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38377 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=19507, Invalid=68999, Unknown=0, NotChecked=0, Total=88506 [2023-12-21 04:44:58,520 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 8 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 04:44:58,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1121 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 04:44:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-21 04:44:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2023-12-21 04:44:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.006779661016949) internal successors, (297), 295 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2023-12-21 04:44:58,548 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 294 [2023-12-21 04:44:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:44:58,549 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2023-12-21 04:44:58,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 224 states have (on average 2.3125) internal successors, (518), 223 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:44:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2023-12-21 04:44:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-21 04:44:58,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:44:58,550 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1, 1] [2023-12-21 04:44:58,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2023-12-21 04:44:58,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2023-12-21 04:44:58,753 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:44:58,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:44:58,753 INFO L85 PathProgramCache]: Analyzing trace with hash 133938097, now seen corresponding path program 144 times [2023-12-21 04:44:58,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:44:58,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675983003] [2023-12-21 04:44:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:44:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:44:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:45:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10513 backedges. 2628 proven. 7885 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:45:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675983003] [2023-12-21 04:45:02,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675983003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:45:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878161558] [2023-12-21 04:45:02,388 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:45:02,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:45:02,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:45:02,389 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:45:02,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2023-12-21 04:45:02,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2023-12-21 04:45:02,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:45:02,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 152 conjunts are in the unsatisfiable core [2023-12-21 04:45:02,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:45:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10513 backedges. 2701 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:02,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:45:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10513 backedges. 2701 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:05,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878161558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:45:05,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:45:05,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76] total 78 [2023-12-21 04:45:05,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592432957] [2023-12-21 04:45:05,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:45:05,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-21 04:45:05,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:45:05,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-21 04:45:05,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2858, Invalid=3304, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 04:45:05,604 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 79 states, 79 states have (on average 3.7848101265822787) internal successors, (299), 78 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:06,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:45:06,956 INFO L93 Difference]: Finished difference Result 307 states and 308 transitions. [2023-12-21 04:45:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2023-12-21 04:45:06,956 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.7848101265822787) internal successors, (299), 78 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2023-12-21 04:45:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:45:06,957 INFO L225 Difference]: With dead ends: 307 [2023-12-21 04:45:06,957 INFO L226 Difference]: Without dead ends: 305 [2023-12-21 04:45:06,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 513 SyntacticMatches, 146 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11309 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8629, Invalid=14627, Unknown=0, NotChecked=0, Total=23256 [2023-12-21 04:45:06,958 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 152 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:45:06,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 27 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:45:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-21 04:45:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 299. [2023-12-21 04:45:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 298 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2023-12-21 04:45:06,987 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 295 [2023-12-21 04:45:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:45:06,987 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2023-12-21 04:45:06,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.7848101265822787) internal successors, (299), 78 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2023-12-21 04:45:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-21 04:45:06,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:45:06,988 INFO L195 NwaCegarLoop]: trace histogram [74, 73, 73, 73, 1, 1, 1, 1, 1] [2023-12-21 04:45:06,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2023-12-21 04:45:07,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:45:07,195 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:45:07,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:45:07,195 INFO L85 PathProgramCache]: Analyzing trace with hash 130050024, now seen corresponding path program 145 times [2023-12-21 04:45:07,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:45:07,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083257329] [2023-12-21 04:45:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:45:07,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:45:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:45:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 7813 proven. 2918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:14,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:45:14,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083257329] [2023-12-21 04:45:14,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083257329] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:45:14,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576005939] [2023-12-21 04:45:14,123 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:45:14,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:45:14,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:45:14,124 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:45:14,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2023-12-21 04:45:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:45:14,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 150 conjunts are in the unsatisfiable core [2023-12-21 04:45:14,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:45:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 8030 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:21,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:45:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 8030 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:24,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576005939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:45:24,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:45:24,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150, 150] total 226 [2023-12-21 04:45:24,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899052629] [2023-12-21 04:45:24,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:45:24,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 227 states [2023-12-21 04:45:24,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:45:24,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2023-12-21 04:45:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11480, Invalid=39822, Unknown=0, NotChecked=0, Total=51302 [2023-12-21 04:45:24,995 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand has 227 states, 227 states have (on average 2.3127753303964758) internal successors, (525), 226 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:45:27,963 INFO L93 Difference]: Finished difference Result 526 states and 528 transitions. [2023-12-21 04:45:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2023-12-21 04:45:27,963 INFO L78 Accepts]: Start accepts. Automaton has has 227 states, 227 states have (on average 2.3127753303964758) internal successors, (525), 226 states have internal predecessors, (525), 0 states have call successors, (0), 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 298 [2023-12-21 04:45:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:45:27,964 INFO L225 Difference]: With dead ends: 526 [2023-12-21 04:45:27,964 INFO L226 Difference]: Without dead ends: 300 [2023-12-21 04:45:27,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 372 SyntacticMatches, 147 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39421 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=20033, Invalid=70869, Unknown=0, NotChecked=0, Total=90902 [2023-12-21 04:45:27,968 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 8 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:45:27,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 798 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:45:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-21 04:45:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-12-21 04:45:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.0066889632107023) internal successors, (301), 299 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 301 transitions. [2023-12-21 04:45:28,003 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 301 transitions. Word has length 298 [2023-12-21 04:45:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:45:28,003 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 301 transitions. [2023-12-21 04:45:28,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 227 states, 227 states have (on average 2.3127753303964758) internal successors, (525), 226 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 301 transitions. [2023-12-21 04:45:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-21 04:45:28,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:45:28,004 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1, 1] [2023-12-21 04:45:28,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2023-12-21 04:45:28,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2023-12-21 04:45:28,211 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:45:28,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:45:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash 235095501, now seen corresponding path program 146 times [2023-12-21 04:45:28,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:45:28,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29924868] [2023-12-21 04:45:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:45:28,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:45:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:45:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10805 backedges. 2701 proven. 8104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:32,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:45:32,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29924868] [2023-12-21 04:45:32,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29924868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:45:32,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363640053] [2023-12-21 04:45:32,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:45:32,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:45:32,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:45:32,479 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:45:32,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2023-12-21 04:45:32,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:45:32,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:45:32,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 154 conjunts are in the unsatisfiable core [2023-12-21 04:45:32,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:45:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10805 backedges. 2775 proven. 8030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:32,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:45:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 10805 backedges. 2775 proven. 8030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363640053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:45:35,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:45:35,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 79 [2023-12-21 04:45:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722635688] [2023-12-21 04:45:35,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:45:35,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-21 04:45:35,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:45:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-21 04:45:35,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2934, Invalid=3386, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 04:45:35,453 INFO L87 Difference]: Start difference. First operand 300 states and 301 transitions. Second operand has 80 states, 80 states have (on average 3.7875) internal successors, (303), 79 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:45:36,971 INFO L93 Difference]: Finished difference Result 311 states and 312 transitions. [2023-12-21 04:45:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2023-12-21 04:45:36,972 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.7875) internal successors, (303), 79 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2023-12-21 04:45:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:45:36,972 INFO L225 Difference]: With dead ends: 311 [2023-12-21 04:45:36,972 INFO L226 Difference]: Without dead ends: 309 [2023-12-21 04:45:36,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 520 SyntacticMatches, 148 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11612 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8858, Invalid=15012, Unknown=0, NotChecked=0, Total=23870 [2023-12-21 04:45:36,974 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 154 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:45:36,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 19 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:45:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-21 04:45:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 303. [2023-12-21 04:45:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.0066225165562914) internal successors, (304), 302 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2023-12-21 04:45:37,004 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 299 [2023-12-21 04:45:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:45:37,004 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2023-12-21 04:45:37,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.7875) internal successors, (303), 79 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2023-12-21 04:45:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-21 04:45:37,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:45:37,005 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 1, 1, 1, 1, 1] [2023-12-21 04:45:37,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2023-12-21 04:45:37,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2023-12-21 04:45:37,211 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:45:37,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:45:37,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1356769204, now seen corresponding path program 147 times [2023-12-21 04:45:37,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:45:37,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526759601] [2023-12-21 04:45:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:45:37,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:45:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:45:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 8031 proven. 2995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:45:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526759601] [2023-12-21 04:45:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526759601] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:45:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070648559] [2023-12-21 04:45:43,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:45:43,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:45:43,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:45:43,664 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:45:43,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2023-12-21 04:45:44,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2023-12-21 04:45:44,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:45:44,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 152 conjunts are in the unsatisfiable core [2023-12-21 04:45:44,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:45:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 8251 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:50,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:45:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 8251 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:45:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070648559] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:45:54,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:45:54,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152, 152] total 229 [2023-12-21 04:45:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288101983] [2023-12-21 04:45:54,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:45:54,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 230 states [2023-12-21 04:45:54,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:45:54,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2023-12-21 04:45:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11785, Invalid=40885, Unknown=0, NotChecked=0, Total=52670 [2023-12-21 04:45:54,523 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 230 states, 230 states have (on average 2.3130434782608695) internal successors, (532), 229 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:57,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:45:57,413 INFO L93 Difference]: Finished difference Result 533 states and 535 transitions. [2023-12-21 04:45:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-12-21 04:45:57,414 INFO L78 Accepts]: Start accepts. Automaton has has 230 states, 230 states have (on average 2.3130434782608695) internal successors, (532), 229 states have internal predecessors, (532), 0 states have call successors, (0), 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 302 [2023-12-21 04:45:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:45:57,414 INFO L225 Difference]: With dead ends: 533 [2023-12-21 04:45:57,414 INFO L226 Difference]: Without dead ends: 304 [2023-12-21 04:45:57,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 377 SyntacticMatches, 149 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40479 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=20566, Invalid=72764, Unknown=0, NotChecked=0, Total=93330 [2023-12-21 04:45:57,418 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 8 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:45:57,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 911 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:45:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-21 04:45:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-12-21 04:45:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.0066006600660067) internal successors, (305), 303 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:57,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2023-12-21 04:45:57,447 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 302 [2023-12-21 04:45:57,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:45:57,448 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2023-12-21 04:45:57,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 230 states, 230 states have (on average 2.3130434782608695) internal successors, (532), 229 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:45:57,448 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2023-12-21 04:45:57,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-21 04:45:57,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:45:57,449 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1, 1] [2023-12-21 04:45:57,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2023-12-21 04:45:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:45:57,655 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:45:57,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:45:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash -79119439, now seen corresponding path program 148 times [2023-12-21 04:45:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:45:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388728282] [2023-12-21 04:45:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:45:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:45:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:46:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11101 backedges. 2775 proven. 8326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:46:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388728282] [2023-12-21 04:46:01,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388728282] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:46:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789656911] [2023-12-21 04:46:01,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:46:01,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:46:01,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:46:01,585 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:46:01,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2023-12-21 04:46:01,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:46:01,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:46:01,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 156 conjunts are in the unsatisfiable core [2023-12-21 04:46:01,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:46:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11101 backedges. 2850 proven. 8251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:02,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:46:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11101 backedges. 2850 proven. 8251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:04,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789656911] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:46:04,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:46:04,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 80 [2023-12-21 04:46:04,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232339772] [2023-12-21 04:46:04,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:46:04,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-21 04:46:04,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:46:04,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-21 04:46:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3011, Invalid=3469, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 04:46:04,746 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 81 states, 81 states have (on average 3.7901234567901234) internal successors, (307), 80 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:46:05,929 INFO L93 Difference]: Finished difference Result 315 states and 316 transitions. [2023-12-21 04:46:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2023-12-21 04:46:05,929 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.7901234567901234) internal successors, (307), 80 states have internal predecessors, (307), 0 states have call successors, (0), 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 303 [2023-12-21 04:46:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:46:05,930 INFO L225 Difference]: With dead ends: 315 [2023-12-21 04:46:05,930 INFO L226 Difference]: Without dead ends: 313 [2023-12-21 04:46:05,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 527 SyntacticMatches, 150 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11919 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=9090, Invalid=15402, Unknown=0, NotChecked=0, Total=24492 [2023-12-21 04:46:05,931 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 158 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:46:05,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 31 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:46:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-21 04:46:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 307. [2023-12-21 04:46:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.0065359477124183) internal successors, (308), 306 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2023-12-21 04:46:05,961 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 303 [2023-12-21 04:46:05,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:46:05,961 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2023-12-21 04:46:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.7901234567901234) internal successors, (307), 80 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2023-12-21 04:46:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-21 04:46:05,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:46:05,962 INFO L195 NwaCegarLoop]: trace histogram [76, 75, 75, 75, 1, 1, 1, 1, 1] [2023-12-21 04:46:05,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2023-12-21 04:46:06,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2023-12-21 04:46:06,170 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:46:06,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:46:06,171 INFO L85 PathProgramCache]: Analyzing trace with hash 894658536, now seen corresponding path program 149 times [2023-12-21 04:46:06,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:46:06,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598717889] [2023-12-21 04:46:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:46:06,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:46:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:46:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 8252 proven. 3073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:13,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:46:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598717889] [2023-12-21 04:46:13,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598717889] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:46:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80231504] [2023-12-21 04:46:13,696 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:46:13,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:46:13,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:46:13,697 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:46:13,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2023-12-21 04:46:14,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2023-12-21 04:46:14,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:46:14,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 154 conjunts are in the unsatisfiable core [2023-12-21 04:46:14,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:46:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 8475 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:19,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:46:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 8475 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:23,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80231504] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:46:23,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:46:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154, 154] total 232 [2023-12-21 04:46:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64492604] [2023-12-21 04:46:23,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:46:23,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 233 states [2023-12-21 04:46:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:46:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2023-12-21 04:46:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12094, Invalid=41962, Unknown=0, NotChecked=0, Total=54056 [2023-12-21 04:46:23,412 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand has 233 states, 233 states have (on average 2.313304721030043) internal successors, (539), 232 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:46:27,323 INFO L93 Difference]: Finished difference Result 540 states and 542 transitions. [2023-12-21 04:46:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2023-12-21 04:46:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 233 states, 233 states have (on average 2.313304721030043) internal successors, (539), 232 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2023-12-21 04:46:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:46:27,323 INFO L225 Difference]: With dead ends: 540 [2023-12-21 04:46:27,323 INFO L226 Difference]: Without dead ends: 308 [2023-12-21 04:46:27,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 382 SyntacticMatches, 151 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41551 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=21106, Invalid=74684, Unknown=0, NotChecked=0, Total=95790 [2023-12-21 04:46:27,328 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 8 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 04:46:27,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 963 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 04:46:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-21 04:46:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-21 04:46:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.006514657980456) internal successors, (309), 307 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 309 transitions. [2023-12-21 04:46:27,358 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 309 transitions. Word has length 306 [2023-12-21 04:46:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:46:27,358 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 309 transitions. [2023-12-21 04:46:27,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 233 states, 233 states have (on average 2.313304721030043) internal successors, (539), 232 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 309 transitions. [2023-12-21 04:46:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2023-12-21 04:46:27,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:46:27,359 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1, 1] [2023-12-21 04:46:27,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2023-12-21 04:46:27,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:46:27,565 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:46:27,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:46:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1902079795, now seen corresponding path program 150 times [2023-12-21 04:46:27,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:46:27,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174999611] [2023-12-21 04:46:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:46:27,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:46:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:46:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11401 backedges. 2850 proven. 8551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:32,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:46:32,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174999611] [2023-12-21 04:46:32,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174999611] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:46:32,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449774651] [2023-12-21 04:46:32,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:46:32,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:46:32,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:46:32,139 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:46:32,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2023-12-21 04:46:32,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2023-12-21 04:46:32,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:46:32,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 158 conjunts are in the unsatisfiable core [2023-12-21 04:46:32,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:46:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11401 backedges. 2926 proven. 8475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:32,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:46:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11401 backedges. 2926 proven. 8475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:36,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449774651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:46:36,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:46:36,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 81 [2023-12-21 04:46:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692939275] [2023-12-21 04:46:36,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:46:36,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-12-21 04:46:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:46:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-12-21 04:46:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3089, Invalid=3553, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 04:46:36,111 INFO L87 Difference]: Start difference. First operand 308 states and 309 transitions. Second operand has 82 states, 82 states have (on average 3.792682926829268) internal successors, (311), 81 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:46:37,825 INFO L93 Difference]: Finished difference Result 319 states and 320 transitions. [2023-12-21 04:46:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-12-21 04:46:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 3.792682926829268) internal successors, (311), 81 states have internal predecessors, (311), 0 states have call successors, (0), 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 307 [2023-12-21 04:46:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:46:37,826 INFO L225 Difference]: With dead ends: 319 [2023-12-21 04:46:37,826 INFO L226 Difference]: Without dead ends: 317 [2023-12-21 04:46:37,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 534 SyntacticMatches, 152 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12230 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9325, Invalid=15797, Unknown=0, NotChecked=0, Total=25122 [2023-12-21 04:46:37,828 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 84 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:46:37,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 30 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:46:37,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-21 04:46:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 311. [2023-12-21 04:46:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 310 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2023-12-21 04:46:37,863 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 307 [2023-12-21 04:46:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:46:37,875 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2023-12-21 04:46:37,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 3.792682926829268) internal successors, (311), 81 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2023-12-21 04:46:37,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-21 04:46:37,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:46:37,877 INFO L195 NwaCegarLoop]: trace histogram [77, 76, 76, 76, 1, 1, 1, 1, 1] [2023-12-21 04:46:37,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2023-12-21 04:46:38,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:46:38,085 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:46:38,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:46:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1350816436, now seen corresponding path program 151 times [2023-12-21 04:46:38,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:46:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784600758] [2023-12-21 04:46:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:46:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:46:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:46:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 8476 proven. 3152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:46:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784600758] [2023-12-21 04:46:44,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784600758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:46:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109989647] [2023-12-21 04:46:44,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:46:44,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:46:44,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:46:44,855 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:46:44,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2023-12-21 04:46:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:46:45,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 156 conjunts are in the unsatisfiable core [2023-12-21 04:46:45,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:46:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 8702 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:51,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:46:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 8702 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:46:55,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109989647] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:46:55,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:46:55,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156, 156] total 235 [2023-12-21 04:46:55,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115354997] [2023-12-21 04:46:55,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:46:55,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 236 states [2023-12-21 04:46:55,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:46:55,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2023-12-21 04:46:55,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12407, Invalid=43053, Unknown=0, NotChecked=0, Total=55460 [2023-12-21 04:46:55,460 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 236 states, 236 states have (on average 2.3135593220338984) internal successors, (546), 235 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:59,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:46:59,363 INFO L93 Difference]: Finished difference Result 547 states and 549 transitions. [2023-12-21 04:46:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2023-12-21 04:46:59,364 INFO L78 Accepts]: Start accepts. Automaton has has 236 states, 236 states have (on average 2.3135593220338984) internal successors, (546), 235 states have internal predecessors, (546), 0 states have call successors, (0), 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 310 [2023-12-21 04:46:59,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:46:59,364 INFO L225 Difference]: With dead ends: 547 [2023-12-21 04:46:59,364 INFO L226 Difference]: Without dead ends: 312 [2023-12-21 04:46:59,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 387 SyntacticMatches, 153 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42637 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=21653, Invalid=76629, Unknown=0, NotChecked=0, Total=98282 [2023-12-21 04:46:59,368 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 8 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 04:46:59,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 980 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 04:46:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-21 04:46:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-12-21 04:46:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.0064308681672025) internal successors, (313), 311 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2023-12-21 04:46:59,399 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 310 [2023-12-21 04:46:59,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:46:59,399 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2023-12-21 04:46:59,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 236 states, 236 states have (on average 2.3135593220338984) internal successors, (546), 235 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:46:59,399 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2023-12-21 04:46:59,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-21 04:46:59,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:46:59,400 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1, 1] [2023-12-21 04:46:59,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2023-12-21 04:46:59,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:46:59,606 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:46:59,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:46:59,606 INFO L85 PathProgramCache]: Analyzing trace with hash -628073551, now seen corresponding path program 152 times [2023-12-21 04:46:59,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:46:59,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487440058] [2023-12-21 04:46:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:46:59,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:46:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:47:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11705 backedges. 2926 proven. 8779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:47:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:47:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487440058] [2023-12-21 04:47:03,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487440058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:47:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191254184] [2023-12-21 04:47:03,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:47:03,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:47:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:47:03,973 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:47:03,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2023-12-21 04:47:04,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:47:04,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:47:04,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 160 conjunts are in the unsatisfiable core [2023-12-21 04:47:04,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:47:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11705 backedges. 3003 proven. 8702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:47:04,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:47:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11705 backedges. 3003 proven. 8702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:47:07,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191254184] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:47:07,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:47:07,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 82 [2023-12-21 04:47:07,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556363424] [2023-12-21 04:47:07,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:47:07,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-21 04:47:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:47:07,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-21 04:47:07,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3168, Invalid=3638, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 04:47:07,166 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 83 states, 83 states have (on average 3.7951807228915664) internal successors, (315), 82 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) [2023-12-21 04:47:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:47:08,388 INFO L93 Difference]: Finished difference Result 323 states and 324 transitions. [2023-12-21 04:47:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2023-12-21 04:47:08,389 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.7951807228915664) internal successors, (315), 82 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 311 [2023-12-21 04:47:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:47:08,389 INFO L225 Difference]: With dead ends: 323 [2023-12-21 04:47:08,389 INFO L226 Difference]: Without dead ends: 321 [2023-12-21 04:47:08,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 541 SyntacticMatches, 154 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12545 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=9563, Invalid=16197, Unknown=0, NotChecked=0, Total=25760 [2023-12-21 04:47:08,391 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 83 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:47:08,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 24 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:47:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-21 04:47:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 315. [2023-12-21 04:47:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.0063694267515924) internal successors, (316), 314 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:47:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2023-12-21 04:47:08,426 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 311 [2023-12-21 04:47:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:47:08,426 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2023-12-21 04:47:08,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.7951807228915664) internal successors, (315), 82 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) [2023-12-21 04:47:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2023-12-21 04:47:08,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-21 04:47:08,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:47:08,427 INFO L195 NwaCegarLoop]: trace histogram [78, 77, 77, 77, 1, 1, 1, 1, 1] [2023-12-21 04:47:08,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2023-12-21 04:47:08,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:47:08,635 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:47:08,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:47:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2056796184, now seen corresponding path program 153 times [2023-12-21 04:47:08,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:47:08,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214866139] [2023-12-21 04:47:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:47:08,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:47:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:47:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 8703 proven. 3232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:47:16,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:47:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214866139] [2023-12-21 04:47:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214866139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:47:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904826652] [2023-12-21 04:47:16,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:47:16,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:47:16,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:47:16,137 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:47:16,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2023-12-21 04:47:16,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 78 check-sat command(s) [2023-12-21 04:47:16,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:47:16,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 158 conjunts are in the unsatisfiable core [2023-12-21 04:47:16,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-21 04:47:19,381 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 04:47:19,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2023-12-21 04:47:19,393 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 04:47:19,393 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 04:47:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:47:19,582 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 315 with TraceHistMax 78,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 208 known predicates. [2023-12-21 04:47:19,585 INFO L445 BasicCegarLoop]: Path program histogram: [153, 1, 1] [2023-12-21 04:47:19,587 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 04:47:19,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:47:19 BoogieIcfgContainer [2023-12-21 04:47:19,588 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 04:47:19,588 INFO L158 Benchmark]: Toolchain (without parser) took 887522.02ms. Allocated memory was 180.4MB in the beginning and 1.0GB in the end (delta: 851.4MB). Free memory was 132.1MB in the beginning and 488.0MB in the end (delta: -355.9MB). Peak memory consumption was 496.6MB. Max. memory is 8.0GB. [2023-12-21 04:47:19,588 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 180.4MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 04:47:19,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.89ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 121.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 04:47:19,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.12ms. Allocated memory is still 180.4MB. Free memory was 121.2MB in the beginning and 119.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 04:47:19,588 INFO L158 Benchmark]: Boogie Preprocessor took 28.12ms. Allocated memory is still 180.4MB. Free memory was 119.5MB in the beginning and 118.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 04:47:19,588 INFO L158 Benchmark]: RCFGBuilder took 230.44ms. Allocated memory is still 180.4MB. Free memory was 117.8MB in the beginning and 108.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-21 04:47:19,588 INFO L158 Benchmark]: TraceAbstraction took 887067.88ms. Allocated memory was 180.4MB in the beginning and 1.0GB in the end (delta: 851.4MB). Free memory was 107.6MB in the beginning and 488.0MB in the end (delta: -380.4MB). Peak memory consumption was 471.4MB. Max. memory is 8.0GB. [2023-12-21 04:47:19,589 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 180.4MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.89ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 121.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.12ms. Allocated memory is still 180.4MB. Free memory was 121.2MB in the beginning and 119.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.12ms. Allocated memory is still 180.4MB. Free memory was 119.5MB in the beginning and 118.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 230.44ms. Allocated memory is still 180.4MB. Free memory was 117.8MB in the beginning and 108.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 887067.88ms. Allocated memory was 180.4MB in the beginning and 1.0GB in the end (delta: 851.4MB). Free memory was 107.6MB in the beginning and 488.0MB in the end (delta: -380.4MB). Peak memory consumption was 471.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 315 with TraceHistMax 78,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 208 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 887.0s, OverallIterations: 155, TraceHistogramMax: 78, PathProgramHistogramMax: 153, EmptinessCheckTime: 0.1s, AutomataDifference: 141.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5989 SdHoareTripleChecker+Valid, 28.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5989 mSDsluCounter, 38842 SdHoareTripleChecker+Invalid, 24.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35374 mSDsCounter, 229 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104718 IncrementalHoareTripleChecker+Invalid, 104947 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 229 mSolverCounterUnsat, 3468 mSDtfsCounter, 104718 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66973 GetRequests, 36334 SyntacticMatches, 11932 SemanticMatches, 18707 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466380 ImplicationChecksByTransitivity, 597.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=315occurred in iteration=154, InterpolantAutomatonStates: 12702, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 154 MinimizatonAttempts, 462 StatesRemovedByMinimization, 77 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.3s SsaConstructionTime, 16.9s SatisfiabilityAnalysisTime, 674.3s InterpolantComputationTime, 48812 NumberOfCodeBlocks, 48812 NumberOfCodeBlocksAsserted, 3258 NumberOfCheckSat, 72749 ConstructedInterpolants, 0 QuantifiedInterpolants, 288012 SizeOfPredicates, 458 NumberOfNonLiveVariables, 93367 ConjunctsInSsa, 12624 ConjunctsInUnsatCore, 459 InterpolantComputations, 2 PerfectInterpolantSequences, 901513/1817276 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown