/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:38:33,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:38:33,432 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 11:38:33,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:38:33,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:38:33,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:38:33,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:38:33,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:38:33,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:38:33,456 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:38:33,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:38:33,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:38:33,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:38:33,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:38:33,458 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:38:33,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:38:33,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:38:33,459 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:38:33,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:38:33,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:38:33,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:38:33,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:38:33,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:38:33,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:38:33,461 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:38:33,461 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:38:33,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:38:33,462 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:38:33,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:38:33,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:38:33,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:38:33,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:38:33,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:38:33,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:38:33,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:38:33,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:38:33,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:38:33,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:38:33,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:38:33,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:38:33,465 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:38:33,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:38:33,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:38:33,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:38:33,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:38:33,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:38:33,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:38:33,718 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:38:33,718 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:38:33,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:38:34,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:38:35,038 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:38:35,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:38:35,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a389c8944/14d7d6e8520740c1ab84138a3fdd2d8e/FLAGc9136ba12 [2023-12-21 11:38:35,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a389c8944/14d7d6e8520740c1ab84138a3fdd2d8e [2023-12-21 11:38:35,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:38:35,069 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:38:35,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:38:35,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:38:35,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:38:35,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7894f577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35, skipping insertion in model container [2023-12-21 11:38:35,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:38:35,317 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2023-12-21 11:38:35,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:38:35,335 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:38:35,381 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2023-12-21 11:38:35,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:38:35,406 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:38:35,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35 WrapperNode [2023-12-21 11:38:35,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:38:35,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:38:35,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:38:35,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:38:35,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,467 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 374 [2023-12-21 11:38:35,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:38:35,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:38:35,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:38:35,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:38:35,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,499 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 11:38:35,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,523 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:38:35,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:38:35,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:38:35,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:38:35,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (1/1) ... [2023-12-21 11:38:35,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:38:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:38:35,605 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 11:38:35,632 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 11:38:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:38:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:38:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:38:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:38:35,721 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:38:35,723 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:38:36,167 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:38:36,194 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:38:36,194 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:38:36,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:38:36 BoogieIcfgContainer [2023-12-21 11:38:36,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:38:36,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:38:36,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:38:36,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:38:36,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:38:35" (1/3) ... [2023-12-21 11:38:36,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300021f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:38:36, skipping insertion in model container [2023-12-21 11:38:36,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:35" (2/3) ... [2023-12-21 11:38:36,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300021f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:38:36, skipping insertion in model container [2023-12-21 11:38:36,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:38:36" (3/3) ... [2023-12-21 11:38:36,201 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:38:36,216 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:38:36,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:38:36,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:38:36,261 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;@71e890ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:38:36,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:38:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.7835051546391754) internal successors, (173), 98 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 11:38:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 11:38:36,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:36,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:36,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:36,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash -949556914, now seen corresponding path program 1 times [2023-12-21 11:38:36,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:36,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504276957] [2023-12-21 11:38:36,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:36,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:36,524 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 11:38:36,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:36,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504276957] [2023-12-21 11:38:36,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504276957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:36,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:36,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:38:36,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092988823] [2023-12-21 11:38:36,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:38:36,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:36,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:38:36,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:38:36,567 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.7835051546391754) internal successors, (173), 98 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) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:36,603 INFO L93 Difference]: Finished difference Result 161 states and 277 transitions. [2023-12-21 11:38:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:38:36,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 11:38:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:36,613 INFO L225 Difference]: With dead ends: 161 [2023-12-21 11:38:36,613 INFO L226 Difference]: Without dead ends: 97 [2023-12-21 11:38:36,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:38:36,618 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:36,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-21 11:38:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-21 11:38:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.75) internal successors, (168), 96 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 11:38:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 168 transitions. [2023-12-21 11:38:36,648 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 168 transitions. Word has length 30 [2023-12-21 11:38:36,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:36,649 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 168 transitions. [2023-12-21 11:38:36,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:36,649 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 168 transitions. [2023-12-21 11:38:36,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 11:38:36,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:36,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:36,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:38:36,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:36,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 973671120, now seen corresponding path program 1 times [2023-12-21 11:38:36,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:36,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177610801] [2023-12-21 11:38:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:36,940 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 11:38:36,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:36,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177610801] [2023-12-21 11:38:36,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177610801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:36,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:36,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:38:36,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279023636] [2023-12-21 11:38:36,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:36,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:38:36,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:38:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:38:36,948 INFO L87 Difference]: Start difference. First operand 97 states and 168 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:37,039 INFO L93 Difference]: Finished difference Result 161 states and 271 transitions. [2023-12-21 11:38:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:38:37,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 11:38:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:37,041 INFO L225 Difference]: With dead ends: 161 [2023-12-21 11:38:37,042 INFO L226 Difference]: Without dead ends: 97 [2023-12-21 11:38:37,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:38:37,043 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:37,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-21 11:38:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-21 11:38:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 96 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 11:38:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2023-12-21 11:38:37,060 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 30 [2023-12-21 11:38:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:37,060 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2023-12-21 11:38:37,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2023-12-21 11:38:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:38:37,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:37,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:38:37,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:37,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1207847871, now seen corresponding path program 1 times [2023-12-21 11:38:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:37,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922468191] [2023-12-21 11:38:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:37,185 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 11:38:37,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:37,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922468191] [2023-12-21 11:38:37,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922468191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:37,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:37,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:37,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016330357] [2023-12-21 11:38:37,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:37,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:37,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:37,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:37,191 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 11:38:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:37,224 INFO L93 Difference]: Finished difference Result 211 states and 322 transitions. [2023-12-21 11:38:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:37,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) Word has length 61 [2023-12-21 11:38:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:37,233 INFO L225 Difference]: With dead ends: 211 [2023-12-21 11:38:37,234 INFO L226 Difference]: Without dead ends: 150 [2023-12-21 11:38:37,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:37,238 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 76 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:37,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 268 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-21 11:38:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-12-21 11:38:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.4965986394557824) internal successors, (220), 147 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 11:38:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 220 transitions. [2023-12-21 11:38:37,249 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 220 transitions. Word has length 61 [2023-12-21 11:38:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:37,250 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 220 transitions. [2023-12-21 11:38:37,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 11:38:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 220 transitions. [2023-12-21 11:38:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:38:37,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:37,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:37,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:38:37,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:37,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2119051870, now seen corresponding path program 1 times [2023-12-21 11:38:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:37,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889545538] [2023-12-21 11:38:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:37,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:37,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889545538] [2023-12-21 11:38:37,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889545538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:37,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:37,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263044447] [2023-12-21 11:38:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:37,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:37,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:37,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:37,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:37,438 INFO L87 Difference]: Start difference. First operand 148 states and 220 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 11:38:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:37,591 INFO L93 Difference]: Finished difference Result 820 states and 1324 transitions. [2023-12-21 11:38:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:37,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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) Word has length 61 [2023-12-21 11:38:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:37,595 INFO L225 Difference]: With dead ends: 820 [2023-12-21 11:38:37,595 INFO L226 Difference]: Without dead ends: 708 [2023-12-21 11:38:37,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:37,603 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1243 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:37,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 860 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-12-21 11:38:37,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 258. [2023-12-21 11:38:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.5525291828793775) internal successors, (399), 257 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 11:38:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 399 transitions. [2023-12-21 11:38:37,648 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 399 transitions. Word has length 61 [2023-12-21 11:38:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:37,649 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 399 transitions. [2023-12-21 11:38:37,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 11:38:37,649 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 399 transitions. [2023-12-21 11:38:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 11:38:37,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:37,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:37,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:38:37,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:37,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1253038943, now seen corresponding path program 1 times [2023-12-21 11:38:37,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:37,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033642671] [2023-12-21 11:38:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:37,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:37,877 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 11:38:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033642671] [2023-12-21 11:38:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033642671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:37,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:37,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:38:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990261155] [2023-12-21 11:38:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:38:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:38:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:38:37,881 INFO L87 Difference]: Start difference. First operand 258 states and 399 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:37,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:37,904 INFO L93 Difference]: Finished difference Result 272 states and 416 transitions. [2023-12-21 11:38:37,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:38:37,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 11:38:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:37,906 INFO L225 Difference]: With dead ends: 272 [2023-12-21 11:38:37,906 INFO L226 Difference]: Without dead ends: 270 [2023-12-21 11:38:37,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:38:37,907 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:37,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 389 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:37,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-21 11:38:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2023-12-21 11:38:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.5358490566037737) internal successors, (407), 265 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 407 transitions. [2023-12-21 11:38:37,936 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 407 transitions. Word has length 62 [2023-12-21 11:38:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:37,936 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 407 transitions. [2023-12-21 11:38:37,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 407 transitions. [2023-12-21 11:38:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 11:38:37,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:37,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:37,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:38:37,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:37,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash 190503334, now seen corresponding path program 1 times [2023-12-21 11:38:37,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:37,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121086055] [2023-12-21 11:38:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:37,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:38,052 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 11:38:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121086055] [2023-12-21 11:38:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121086055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:38,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178250388] [2023-12-21 11:38:38,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:38,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,055 INFO L87 Difference]: Start difference. First operand 266 states and 407 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 11:38:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:38,084 INFO L93 Difference]: Finished difference Result 698 states and 1101 transitions. [2023-12-21 11:38:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:38,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 63 [2023-12-21 11:38:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:38,090 INFO L225 Difference]: With dead ends: 698 [2023-12-21 11:38:38,090 INFO L226 Difference]: Without dead ends: 468 [2023-12-21 11:38:38,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,092 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 64 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:38,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 224 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-21 11:38:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 462. [2023-12-21 11:38:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.5553145336225596) internal successors, (717), 461 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 717 transitions. [2023-12-21 11:38:38,112 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 717 transitions. Word has length 63 [2023-12-21 11:38:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:38,113 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 717 transitions. [2023-12-21 11:38:38,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 11:38:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 717 transitions. [2023-12-21 11:38:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 11:38:38,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:38,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:38,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:38:38,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:38,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1576583334, now seen corresponding path program 1 times [2023-12-21 11:38:38,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:38,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598502438] [2023-12-21 11:38:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:38,182 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 11:38:38,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:38,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598502438] [2023-12-21 11:38:38,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598502438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:38,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:38,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:38,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673765446] [2023-12-21 11:38:38,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:38,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,184 INFO L87 Difference]: Start difference. First operand 462 states and 717 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:38,217 INFO L93 Difference]: Finished difference Result 1250 states and 1967 transitions. [2023-12-21 11:38:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-21 11:38:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:38,221 INFO L225 Difference]: With dead ends: 1250 [2023-12-21 11:38:38,221 INFO L226 Difference]: Without dead ends: 824 [2023-12-21 11:38:38,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,222 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 72 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:38,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 266 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-12-21 11:38:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822. [2023-12-21 11:38:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.5554202192448234) internal successors, (1277), 821 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1277 transitions. [2023-12-21 11:38:38,247 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1277 transitions. Word has length 64 [2023-12-21 11:38:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:38,248 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1277 transitions. [2023-12-21 11:38:38,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1277 transitions. [2023-12-21 11:38:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 11:38:38,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:38,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:38,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:38:38,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:38,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash 920527590, now seen corresponding path program 1 times [2023-12-21 11:38:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:38,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98470113] [2023-12-21 11:38:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:38,301 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 11:38:38,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:38,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98470113] [2023-12-21 11:38:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98470113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:38,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:38,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334018854] [2023-12-21 11:38:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:38,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,304 INFO L87 Difference]: Start difference. First operand 822 states and 1277 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:38,340 INFO L93 Difference]: Finished difference Result 2266 states and 3535 transitions. [2023-12-21 11:38:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:38,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-21 11:38:38,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:38,346 INFO L225 Difference]: With dead ends: 2266 [2023-12-21 11:38:38,346 INFO L226 Difference]: Without dead ends: 1480 [2023-12-21 11:38:38,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,349 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 80 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:38,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 282 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2023-12-21 11:38:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1478. [2023-12-21 11:38:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 1.5416384563303995) internal successors, (2277), 1477 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2277 transitions. [2023-12-21 11:38:38,387 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2277 transitions. Word has length 64 [2023-12-21 11:38:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:38,387 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 2277 transitions. [2023-12-21 11:38:38,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2277 transitions. [2023-12-21 11:38:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 11:38:38,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:38,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:38,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:38:38,388 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:38,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:38,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2002355194, now seen corresponding path program 1 times [2023-12-21 11:38:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:38,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713283009] [2023-12-21 11:38:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:38,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:38,443 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 11:38:38,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713283009] [2023-12-21 11:38:38,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713283009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:38,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:38,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:38,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174837966] [2023-12-21 11:38:38,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:38,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:38,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:38,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:38,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,446 INFO L87 Difference]: Start difference. First operand 1478 states and 2277 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:38,503 INFO L93 Difference]: Finished difference Result 4106 states and 6311 transitions. [2023-12-21 11:38:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:38,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-21 11:38:38,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:38,513 INFO L225 Difference]: With dead ends: 4106 [2023-12-21 11:38:38,514 INFO L226 Difference]: Without dead ends: 2664 [2023-12-21 11:38:38,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,520 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 84 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:38,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 295 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2023-12-21 11:38:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2662. [2023-12-21 11:38:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.517098835024427) internal successors, (4037), 2661 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 4037 transitions. [2023-12-21 11:38:38,585 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 4037 transitions. Word has length 64 [2023-12-21 11:38:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:38,585 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 4037 transitions. [2023-12-21 11:38:38,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 4037 transitions. [2023-12-21 11:38:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 11:38:38,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:38,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:38,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:38:38,586 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:38,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 488639244, now seen corresponding path program 1 times [2023-12-21 11:38:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:38,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855507975] [2023-12-21 11:38:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:38,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:38,629 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 11:38:38,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:38,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855507975] [2023-12-21 11:38:38,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855507975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:38,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:38,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:38,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771064099] [2023-12-21 11:38:38,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:38,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,632 INFO L87 Difference]: Start difference. First operand 2662 states and 4037 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 11:38:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:38,724 INFO L93 Difference]: Finished difference Result 5229 states and 7979 transitions. [2023-12-21 11:38:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) Word has length 65 [2023-12-21 11:38:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:38,738 INFO L225 Difference]: With dead ends: 5229 [2023-12-21 11:38:38,738 INFO L226 Difference]: Without dead ends: 3786 [2023-12-21 11:38:38,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:38,742 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 85 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:38,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 304 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2023-12-21 11:38:38,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3784. [2023-12-21 11:38:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3783 states have (on average 1.507533703409992) internal successors, (5703), 3783 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5703 transitions. [2023-12-21 11:38:38,867 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5703 transitions. Word has length 65 [2023-12-21 11:38:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:38,868 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 5703 transitions. [2023-12-21 11:38:38,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 11:38:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5703 transitions. [2023-12-21 11:38:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:38,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:38,871 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:38,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:38:38,871 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:38,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 3829652, now seen corresponding path program 1 times [2023-12-21 11:38:38,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:38,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672752738] [2023-12-21 11:38:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:38:39,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:39,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672752738] [2023-12-21 11:38:39,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672752738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:39,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:39,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:39,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490877232] [2023-12-21 11:38:39,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:39,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:39,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:39,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:39,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:39,030 INFO L87 Difference]: Start difference. First operand 3784 states and 5703 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 11:38:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:39,293 INFO L93 Difference]: Finished difference Result 12596 states and 19229 transitions. [2023-12-21 11:38:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 90 [2023-12-21 11:38:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:39,330 INFO L225 Difference]: With dead ends: 12596 [2023-12-21 11:38:39,330 INFO L226 Difference]: Without dead ends: 10706 [2023-12-21 11:38:39,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:39,336 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 992 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 871 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10706 states. [2023-12-21 11:38:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10706 to 5640. [2023-12-21 11:38:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5640 states, 5639 states have (on average 1.5078914701188153) internal successors, (8503), 5639 states have internal predecessors, (8503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5640 states to 5640 states and 8503 transitions. [2023-12-21 11:38:39,596 INFO L78 Accepts]: Start accepts. Automaton has 5640 states and 8503 transitions. Word has length 90 [2023-12-21 11:38:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:39,597 INFO L495 AbstractCegarLoop]: Abstraction has 5640 states and 8503 transitions. [2023-12-21 11:38:39,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 11:38:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5640 states and 8503 transitions. [2023-12-21 11:38:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:39,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:39,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:39,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:38:39,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:39,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:39,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1007465101, now seen corresponding path program 1 times [2023-12-21 11:38:39,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:39,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648409685] [2023-12-21 11:38:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:39,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 11:38:39,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:39,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648409685] [2023-12-21 11:38:39,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648409685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:39,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:39,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882867413] [2023-12-21 11:38:39,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:39,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:39,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:39,734 INFO L87 Difference]: Start difference. First operand 5640 states and 8503 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 11:38:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:40,010 INFO L93 Difference]: Finished difference Result 14452 states and 22029 transitions. [2023-12-21 11:38:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:40,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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) Word has length 90 [2023-12-21 11:38:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:40,047 INFO L225 Difference]: With dead ends: 14452 [2023-12-21 11:38:40,047 INFO L226 Difference]: Without dead ends: 12562 [2023-12-21 11:38:40,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:40,055 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 942 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:40,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 882 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:40,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2023-12-21 11:38:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 7496. [2023-12-21 11:38:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 1.5080720480320213) internal successors, (11303), 7495 states have internal predecessors, (11303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 11303 transitions. [2023-12-21 11:38:40,349 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 11303 transitions. Word has length 90 [2023-12-21 11:38:40,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:40,349 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 11303 transitions. [2023-12-21 11:38:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 11:38:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 11303 transitions. [2023-12-21 11:38:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:40,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:40,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:40,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:38:40,353 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:40,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:40,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1089701355, now seen corresponding path program 1 times [2023-12-21 11:38:40,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:40,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614504494] [2023-12-21 11:38:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:40,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:38:40,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:40,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614504494] [2023-12-21 11:38:40,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614504494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:40,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:40,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865792971] [2023-12-21 11:38:40,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:40,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:40,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:40,483 INFO L87 Difference]: Start difference. First operand 7496 states and 11303 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 11:38:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:40,815 INFO L93 Difference]: Finished difference Result 16308 states and 24829 transitions. [2023-12-21 11:38:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:40,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) Word has length 90 [2023-12-21 11:38:40,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:40,841 INFO L225 Difference]: With dead ends: 16308 [2023-12-21 11:38:40,841 INFO L226 Difference]: Without dead ends: 14418 [2023-12-21 11:38:40,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:40,847 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 833 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:40,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1019 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14418 states. [2023-12-21 11:38:41,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 9352. [2023-12-21 11:38:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9352 states, 9351 states have (on average 1.5081809432146294) internal successors, (14103), 9351 states have internal predecessors, (14103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 14103 transitions. [2023-12-21 11:38:41,124 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 14103 transitions. Word has length 90 [2023-12-21 11:38:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:41,124 INFO L495 AbstractCegarLoop]: Abstraction has 9352 states and 14103 transitions. [2023-12-21 11:38:41,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 11:38:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 14103 transitions. [2023-12-21 11:38:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:41,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:41,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:41,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:38:41,128 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:41,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:41,129 INFO L85 PathProgramCache]: Analyzing trace with hash 282383157, now seen corresponding path program 1 times [2023-12-21 11:38:41,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:41,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476375185] [2023-12-21 11:38:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:41,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:38:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476375185] [2023-12-21 11:38:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476375185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:41,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:41,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444960381] [2023-12-21 11:38:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:41,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:41,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:41,298 INFO L87 Difference]: Start difference. First operand 9352 states and 14103 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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 11:38:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:41,678 INFO L93 Difference]: Finished difference Result 18164 states and 27629 transitions. [2023-12-21 11:38:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:41,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) Word has length 90 [2023-12-21 11:38:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:41,711 INFO L225 Difference]: With dead ends: 18164 [2023-12-21 11:38:41,711 INFO L226 Difference]: Without dead ends: 16274 [2023-12-21 11:38:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:41,720 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 877 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 968 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16274 states. [2023-12-21 11:38:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16274 to 11208. [2023-12-21 11:38:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11208 states, 11207 states have (on average 1.5082537699652003) internal successors, (16903), 11207 states have internal predecessors, (16903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11208 states to 11208 states and 16903 transitions. [2023-12-21 11:38:42,065 INFO L78 Accepts]: Start accepts. Automaton has 11208 states and 16903 transitions. Word has length 90 [2023-12-21 11:38:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:42,065 INFO L495 AbstractCegarLoop]: Abstraction has 11208 states and 16903 transitions. [2023-12-21 11:38:42,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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 11:38:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 11208 states and 16903 transitions. [2023-12-21 11:38:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 11:38:42,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:42,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:42,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:38:42,071 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:42,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1284889631, now seen corresponding path program 1 times [2023-12-21 11:38:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:42,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493453998] [2023-12-21 11:38:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:42,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:42,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493453998] [2023-12-21 11:38:42,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493453998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:42,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:42,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:42,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465618842] [2023-12-21 11:38:42,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:42,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:42,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:42,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:42,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:42,193 INFO L87 Difference]: Start difference. First operand 11208 states and 16903 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:42,386 INFO L93 Difference]: Finished difference Result 22380 states and 33769 transitions. [2023-12-21 11:38:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:42,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 11:38:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:42,407 INFO L225 Difference]: With dead ends: 22380 [2023-12-21 11:38:42,407 INFO L226 Difference]: Without dead ends: 11210 [2023-12-21 11:38:42,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:42,421 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 68 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:42,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 296 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2023-12-21 11:38:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 11208. [2023-12-21 11:38:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11208 states, 11207 states have (on average 1.4954046578031588) internal successors, (16759), 11207 states have internal predecessors, (16759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11208 states to 11208 states and 16759 transitions. [2023-12-21 11:38:42,703 INFO L78 Accepts]: Start accepts. Automaton has 11208 states and 16759 transitions. Word has length 91 [2023-12-21 11:38:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:42,703 INFO L495 AbstractCegarLoop]: Abstraction has 11208 states and 16759 transitions. [2023-12-21 11:38:42,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 11208 states and 16759 transitions. [2023-12-21 11:38:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 11:38:42,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:42,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:42,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:38:42,706 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:42,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1611106240, now seen corresponding path program 1 times [2023-12-21 11:38:42,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:42,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306240794] [2023-12-21 11:38:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:42,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:42,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306240794] [2023-12-21 11:38:42,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306240794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:42,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:42,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:42,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002073982] [2023-12-21 11:38:42,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:42,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:42,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:42,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:42,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:42,804 INFO L87 Difference]: Start difference. First operand 11208 states and 16759 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:42,953 INFO L93 Difference]: Finished difference Result 16796 states and 25121 transitions. [2023-12-21 11:38:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:42,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 11:38:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:42,963 INFO L225 Difference]: With dead ends: 16796 [2023-12-21 11:38:42,963 INFO L226 Difference]: Without dead ends: 5626 [2023-12-21 11:38:42,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:42,972 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 62 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:42,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 277 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2023-12-21 11:38:43,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5624. [2023-12-21 11:38:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5624 states, 5623 states have (on average 1.4808820914102792) internal successors, (8327), 5623 states have internal predecessors, (8327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5624 states to 5624 states and 8327 transitions. [2023-12-21 11:38:43,098 INFO L78 Accepts]: Start accepts. Automaton has 5624 states and 8327 transitions. Word has length 91 [2023-12-21 11:38:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:43,099 INFO L495 AbstractCegarLoop]: Abstraction has 5624 states and 8327 transitions. [2023-12-21 11:38:43,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5624 states and 8327 transitions. [2023-12-21 11:38:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 11:38:43,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:43,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:43,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:38:43,101 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:43,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:43,101 INFO L85 PathProgramCache]: Analyzing trace with hash 512249057, now seen corresponding path program 1 times [2023-12-21 11:38:43,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:43,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244375085] [2023-12-21 11:38:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:43,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:43,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244375085] [2023-12-21 11:38:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244375085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:43,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:43,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:43,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028759395] [2023-12-21 11:38:43,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:43,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:43,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:43,200 INFO L87 Difference]: Start difference. First operand 5624 states and 8327 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:43,260 INFO L93 Difference]: Finished difference Result 8420 states and 12473 transitions. [2023-12-21 11:38:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:43,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 11:38:43,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:43,265 INFO L225 Difference]: With dead ends: 8420 [2023-12-21 11:38:43,265 INFO L226 Difference]: Without dead ends: 2834 [2023-12-21 11:38:43,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:43,270 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 56 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:43,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 255 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2023-12-21 11:38:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2832. [2023-12-21 11:38:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 1.464853408689509) internal successors, (4147), 2831 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 4147 transitions. [2023-12-21 11:38:43,332 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 4147 transitions. Word has length 91 [2023-12-21 11:38:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:43,332 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 4147 transitions. [2023-12-21 11:38:43,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 4147 transitions. [2023-12-21 11:38:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 11:38:43,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:43,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:43,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:38:43,334 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:43,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1830595966, now seen corresponding path program 1 times [2023-12-21 11:38:43,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:43,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699331845] [2023-12-21 11:38:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:44,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:44,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699331845] [2023-12-21 11:38:44,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699331845] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:38:44,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887944480] [2023-12-21 11:38:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:44,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:38:44,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:38:44,790 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 11:38:44,815 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 11:38:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:44,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 11:38:44,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:38:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:38:45,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:38:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:38:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887944480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:38:45,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:38:45,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-21 11:38:45,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762434372] [2023-12-21 11:38:45,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:38:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:38:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:38:45,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:38:45,328 INFO L87 Difference]: Start difference. First operand 2832 states and 4147 transitions. Second operand has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:52,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:52,019 INFO L93 Difference]: Finished difference Result 25312 states and 36637 transitions. [2023-12-21 11:38:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-21 11:38:52,020 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 11:38:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:52,066 INFO L225 Difference]: With dead ends: 25312 [2023-12-21 11:38:52,066 INFO L226 Difference]: Without dead ends: 23390 [2023-12-21 11:38:52,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2443 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1261, Invalid=5545, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 11:38:52,076 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 3472 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3472 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:52,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3472 Valid, 1862 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 11:38:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23390 states. [2023-12-21 11:38:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23390 to 17548. [2023-12-21 11:38:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17548 states, 17547 states have (on average 1.433236450675329) internal successors, (25149), 17547 states have internal predecessors, (25149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17548 states to 17548 states and 25149 transitions. [2023-12-21 11:38:52,660 INFO L78 Accepts]: Start accepts. Automaton has 17548 states and 25149 transitions. Word has length 91 [2023-12-21 11:38:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:52,660 INFO L495 AbstractCegarLoop]: Abstraction has 17548 states and 25149 transitions. [2023-12-21 11:38:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 17548 states and 25149 transitions. [2023-12-21 11:38:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 11:38:52,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:52,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:52,672 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 11:38:52,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 11:38:52,870 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:52,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash 192233171, now seen corresponding path program 1 times [2023-12-21 11:38:52,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:52,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076661128] [2023-12-21 11:38:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:38:53,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076661128] [2023-12-21 11:38:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076661128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:53,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:53,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:53,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661752273] [2023-12-21 11:38:53,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:53,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:53,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:53,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:53,046 INFO L87 Difference]: Start difference. First operand 17548 states and 25149 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 11:38:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:53,616 INFO L93 Difference]: Finished difference Result 30782 states and 44431 transitions. [2023-12-21 11:38:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:53,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 92 [2023-12-21 11:38:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:53,674 INFO L225 Difference]: With dead ends: 30782 [2023-12-21 11:38:53,675 INFO L226 Difference]: Without dead ends: 28438 [2023-12-21 11:38:53,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:53,686 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 776 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:53,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1051 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28438 states. [2023-12-21 11:38:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28438 to 19918. [2023-12-21 11:38:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19918 states, 19917 states have (on average 1.4327961038308983) internal successors, (28537), 19917 states have internal predecessors, (28537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19918 states to 19918 states and 28537 transitions. [2023-12-21 11:38:54,423 INFO L78 Accepts]: Start accepts. Automaton has 19918 states and 28537 transitions. Word has length 92 [2023-12-21 11:38:54,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:54,423 INFO L495 AbstractCegarLoop]: Abstraction has 19918 states and 28537 transitions. [2023-12-21 11:38:54,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 11:38:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 19918 states and 28537 transitions. [2023-12-21 11:38:54,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:38:54,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:54,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:54,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:38:54,426 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:54,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash 813039922, now seen corresponding path program 1 times [2023-12-21 11:38:54,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:54,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835115254] [2023-12-21 11:38:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:54,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:54,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:54,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835115254] [2023-12-21 11:38:54,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835115254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:54,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:54,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844320442] [2023-12-21 11:38:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:54,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:54,525 INFO L87 Difference]: Start difference. First operand 19918 states and 28537 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 11:38:54,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:54,772 INFO L93 Difference]: Finished difference Result 29742 states and 42479 transitions. [2023-12-21 11:38:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:54,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) Word has length 93 [2023-12-21 11:38:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:54,789 INFO L225 Difference]: With dead ends: 29742 [2023-12-21 11:38:54,789 INFO L226 Difference]: Without dead ends: 9862 [2023-12-21 11:38:54,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:54,810 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 40 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:54,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 248 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9862 states. [2023-12-21 11:38:55,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9862 to 9860. [2023-12-21 11:38:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9860 states, 9859 states have (on average 1.4008520133887818) internal successors, (13811), 9859 states have internal predecessors, (13811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9860 states to 9860 states and 13811 transitions. [2023-12-21 11:38:55,241 INFO L78 Accepts]: Start accepts. Automaton has 9860 states and 13811 transitions. Word has length 93 [2023-12-21 11:38:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:55,242 INFO L495 AbstractCegarLoop]: Abstraction has 9860 states and 13811 transitions. [2023-12-21 11:38:55,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 11:38:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 9860 states and 13811 transitions. [2023-12-21 11:38:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:38:55,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:55,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:55,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:38:55,244 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:55,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:55,244 INFO L85 PathProgramCache]: Analyzing trace with hash -296151914, now seen corresponding path program 1 times [2023-12-21 11:38:55,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:55,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61236016] [2023-12-21 11:38:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:55,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:57,200 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:57,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:57,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61236016] [2023-12-21 11:38:57,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61236016] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:38:57,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754128710] [2023-12-21 11:38:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:57,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:38:57,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:38:57,205 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 11:38:57,230 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 11:38:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:57,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:38:57,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:38:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:58,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:38:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:59,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754128710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:38:59,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:38:59,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-12-21 11:38:59,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011085848] [2023-12-21 11:38:59,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:38:59,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:38:59,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:38:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:38:59,446 INFO L87 Difference]: Start difference. First operand 9860 states and 13811 transitions. Second operand has 30 states, 30 states have (on average 8.7) internal successors, (261), 29 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 11:39:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:01,219 INFO L93 Difference]: Finished difference Result 40756 states and 56530 transitions. [2023-12-21 11:39:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 11:39:01,220 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.7) internal successors, (261), 29 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 11:39:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:01,292 INFO L225 Difference]: With dead ends: 40756 [2023-12-21 11:39:01,293 INFO L226 Difference]: Without dead ends: 30956 [2023-12-21 11:39:01,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 11:39:01,312 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1348 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:01,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 1356 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:39:01,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30956 states. [2023-12-21 11:39:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30956 to 22568. [2023-12-21 11:39:02,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22568 states, 22567 states have (on average 1.3858288651570878) internal successors, (31274), 22567 states have internal predecessors, (31274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22568 states to 22568 states and 31274 transitions. [2023-12-21 11:39:02,049 INFO L78 Accepts]: Start accepts. Automaton has 22568 states and 31274 transitions. Word has length 95 [2023-12-21 11:39:02,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:02,050 INFO L495 AbstractCegarLoop]: Abstraction has 22568 states and 31274 transitions. [2023-12-21 11:39:02,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.7) internal successors, (261), 29 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 11:39:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22568 states and 31274 transitions. [2023-12-21 11:39:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:39:02,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:02,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:02,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 11:39:02,259 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,SelfDestructingSolverStorable20 [2023-12-21 11:39:02,260 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:02,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:02,261 INFO L85 PathProgramCache]: Analyzing trace with hash 615052085, now seen corresponding path program 1 times [2023-12-21 11:39:02,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067111647] [2023-12-21 11:39:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:02,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:02,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:02,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067111647] [2023-12-21 11:39:02,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067111647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:39:02,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:39:02,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:39:02,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363816336] [2023-12-21 11:39:02,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:39:02,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:39:02,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:02,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:39:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:02,337 INFO L87 Difference]: Start difference. First operand 22568 states and 31274 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 11:39:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:02,723 INFO L93 Difference]: Finished difference Result 33718 states and 46664 transitions. [2023-12-21 11:39:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:39:02,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 95 [2023-12-21 11:39:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:02,741 INFO L225 Difference]: With dead ends: 33718 [2023-12-21 11:39:02,742 INFO L226 Difference]: Without dead ends: 12885 [2023-12-21 11:39:02,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:02,758 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:02,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 223 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:39:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12885 states. [2023-12-21 11:39:03,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12885 to 12883. [2023-12-21 11:39:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12883 states, 12882 states have (on average 1.3601148889923924) internal successors, (17521), 12882 states have internal predecessors, (17521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12883 states to 12883 states and 17521 transitions. [2023-12-21 11:39:03,070 INFO L78 Accepts]: Start accepts. Automaton has 12883 states and 17521 transitions. Word has length 95 [2023-12-21 11:39:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:03,070 INFO L495 AbstractCegarLoop]: Abstraction has 12883 states and 17521 transitions. [2023-12-21 11:39:03,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 11:39:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 12883 states and 17521 transitions. [2023-12-21 11:39:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:39:03,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:03,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 11:39:03,072 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:03,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2098083436, now seen corresponding path program 1 times [2023-12-21 11:39:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069713333] [2023-12-21 11:39:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:03,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069713333] [2023-12-21 11:39:03,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069713333] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:39:03,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696148666] [2023-12-21 11:39:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:03,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:03,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:39:03,923 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 11:39:03,939 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 11:39:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:04,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 11:39:04,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:39:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:05,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:39:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:06,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696148666] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:39:06,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:39:06,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2023-12-21 11:39:06,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917406629] [2023-12-21 11:39:06,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:39:06,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 11:39:06,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 11:39:06,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2023-12-21 11:39:06,699 INFO L87 Difference]: Start difference. First operand 12883 states and 17521 transitions. Second operand has 31 states, 31 states have (on average 8.67741935483871) internal successors, (269), 30 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 11:39:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:13,649 INFO L93 Difference]: Finished difference Result 65993 states and 88717 transitions. [2023-12-21 11:39:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-12-21 11:39:13,650 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 8.67741935483871) internal successors, (269), 30 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 11:39:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:13,708 INFO L225 Difference]: With dead ends: 65993 [2023-12-21 11:39:13,708 INFO L226 Difference]: Without dead ends: 54509 [2023-12-21 11:39:13,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9945 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4456, Invalid=22276, Unknown=0, NotChecked=0, Total=26732 [2023-12-21 11:39:13,729 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 5033 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5033 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:13,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5033 Valid, 1793 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:39:13,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54509 states. [2023-12-21 11:39:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54509 to 47705. [2023-12-21 11:39:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47705 states, 47704 states have (on average 1.3509349320811672) internal successors, (64445), 47704 states have internal predecessors, (64445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47705 states to 47705 states and 64445 transitions. [2023-12-21 11:39:15,242 INFO L78 Accepts]: Start accepts. Automaton has 47705 states and 64445 transitions. Word has length 95 [2023-12-21 11:39:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:15,242 INFO L495 AbstractCegarLoop]: Abstraction has 47705 states and 64445 transitions. [2023-12-21 11:39:15,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.67741935483871) internal successors, (269), 30 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 11:39:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 47705 states and 64445 transitions. [2023-12-21 11:39:15,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:39:15,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:15,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:15,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 11:39:15,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:15,450 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:15,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1870987751, now seen corresponding path program 1 times [2023-12-21 11:39:15,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:15,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140345549] [2023-12-21 11:39:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:15,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:15,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:15,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140345549] [2023-12-21 11:39:15,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140345549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:39:15,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:39:15,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:39:15,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378623586] [2023-12-21 11:39:15,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:39:15,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:39:15,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:15,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:39:15,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:15,497 INFO L87 Difference]: Start difference. First operand 47705 states and 64445 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:17,413 INFO L93 Difference]: Finished difference Result 129693 states and 174723 transitions. [2023-12-21 11:39:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:39:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 11:39:17,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:17,620 INFO L225 Difference]: With dead ends: 129693 [2023-12-21 11:39:17,620 INFO L226 Difference]: Without dead ends: 82728 [2023-12-21 11:39:17,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:17,681 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 64 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:17,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 278 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:39:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82728 states. [2023-12-21 11:39:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82728 to 82726. [2023-12-21 11:39:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82726 states, 82725 states have (on average 1.3269144756724085) internal successors, (109769), 82725 states have internal predecessors, (109769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82726 states to 82726 states and 109769 transitions. [2023-12-21 11:39:19,993 INFO L78 Accepts]: Start accepts. Automaton has 82726 states and 109769 transitions. Word has length 96 [2023-12-21 11:39:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:19,993 INFO L495 AbstractCegarLoop]: Abstraction has 82726 states and 109769 transitions. [2023-12-21 11:39:19,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 82726 states and 109769 transitions. [2023-12-21 11:39:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:39:19,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:19,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:19,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 11:39:19,998 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:19,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2061453403, now seen corresponding path program 1 times [2023-12-21 11:39:19,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:19,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045707018] [2023-12-21 11:39:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:19,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:20,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045707018] [2023-12-21 11:39:20,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045707018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:39:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714713662] [2023-12-21 11:39:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:20,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:20,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:39:20,882 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 11:39:20,883 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 11:39:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:20,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:39:20,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:39:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:21,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:39:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:21,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714713662] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:39:21,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:39:21,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-12-21 11:39:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165513221] [2023-12-21 11:39:21,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:39:21,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 11:39:21,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:21,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 11:39:21,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2023-12-21 11:39:21,919 INFO L87 Difference]: Start difference. First operand 82726 states and 109769 transitions. Second operand has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 23 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:27,130 INFO L93 Difference]: Finished difference Result 328041 states and 431636 transitions. [2023-12-21 11:39:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:39:27,130 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 23 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 11:39:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:27,553 INFO L225 Difference]: With dead ends: 328041 [2023-12-21 11:39:27,554 INFO L226 Difference]: Without dead ends: 256157 [2023-12-21 11:39:27,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=302, Invalid=1104, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 11:39:27,636 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 2235 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:27,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2235 Valid, 977 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:39:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256157 states. [2023-12-21 11:39:34,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256157 to 217891. [2023-12-21 11:39:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217891 states, 217890 states have (on average 1.3105695534443986) internal successors, (285560), 217890 states have internal predecessors, (285560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217891 states to 217891 states and 285560 transitions. [2023-12-21 11:39:34,862 INFO L78 Accepts]: Start accepts. Automaton has 217891 states and 285560 transitions. Word has length 96 [2023-12-21 11:39:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:34,862 INFO L495 AbstractCegarLoop]: Abstraction has 217891 states and 285560 transitions. [2023-12-21 11:39:34,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 23 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 217891 states and 285560 transitions. [2023-12-21 11:39:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:39:34,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:34,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:34,876 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 11:39:35,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:35,076 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:35,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:35,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1129185557, now seen corresponding path program 1 times [2023-12-21 11:39:35,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:35,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086191669] [2023-12-21 11:39:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:35,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086191669] [2023-12-21 11:39:35,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086191669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:39:35,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:39:35,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:39:35,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345547314] [2023-12-21 11:39:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:39:35,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:39:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:39:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:35,400 INFO L87 Difference]: Start difference. First operand 217891 states and 285560 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:40,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:40,903 INFO L93 Difference]: Finished difference Result 440049 states and 575680 transitions. [2023-12-21 11:39:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:39:40,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 11:39:40,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:41,315 INFO L225 Difference]: With dead ends: 440049 [2023-12-21 11:39:41,315 INFO L226 Difference]: Without dead ends: 223803 [2023-12-21 11:39:41,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:41,413 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 60 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:41,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 327 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:39:41,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223803 states. [2023-12-21 11:39:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223803 to 180145. [2023-12-21 11:39:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180145 states, 180144 states have (on average 1.2930544453326227) internal successors, (232936), 180144 states have internal predecessors, (232936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180145 states to 180145 states and 232936 transitions. [2023-12-21 11:39:47,439 INFO L78 Accepts]: Start accepts. Automaton has 180145 states and 232936 transitions. Word has length 96 [2023-12-21 11:39:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:47,439 INFO L495 AbstractCegarLoop]: Abstraction has 180145 states and 232936 transitions. [2023-12-21 11:39:47,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 180145 states and 232936 transitions. [2023-12-21 11:39:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:39:47,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:47,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:47,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 11:39:47,446 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:47,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash 445769128, now seen corresponding path program 1 times [2023-12-21 11:39:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:47,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365625090] [2023-12-21 11:39:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:47,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:47,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365625090] [2023-12-21 11:39:47,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365625090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:39:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100941715] [2023-12-21 11:39:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:47,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:39:47,773 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 11:39:47,776 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 11:39:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:47,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 11:39:47,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:39:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:48,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:39:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100941715] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:39:49,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:39:49,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-21 11:39:49,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759833722] [2023-12-21 11:39:49,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:39:49,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:39:49,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:39:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:39:49,415 INFO L87 Difference]: Start difference. First operand 180145 states and 232936 transitions. Second operand has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 18 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 11:39:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:59,221 INFO L93 Difference]: Finished difference Result 552674 states and 713379 transitions. [2023-12-21 11:39:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 11:39:59,222 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 18 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) Word has length 97 [2023-12-21 11:39:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:59,796 INFO L225 Difference]: With dead ends: 552674 [2023-12-21 11:39:59,797 INFO L226 Difference]: Without dead ends: 388106 [2023-12-21 11:39:59,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:39:59,872 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 534 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:59,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 867 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:40:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388106 states. [2023-12-21 11:40:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388106 to 341228. [2023-12-21 11:40:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341228 states, 341227 states have (on average 1.2844147737429923) internal successors, (438277), 341227 states have internal predecessors, (438277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:40:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341228 states to 341228 states and 438277 transitions. [2023-12-21 11:40:11,904 INFO L78 Accepts]: Start accepts. Automaton has 341228 states and 438277 transitions. Word has length 97 [2023-12-21 11:40:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:40:11,904 INFO L495 AbstractCegarLoop]: Abstraction has 341228 states and 438277 transitions. [2023-12-21 11:40:11,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 18 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 11:40:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 341228 states and 438277 transitions. [2023-12-21 11:40:11,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:40:11,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:40:11,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:40:11,919 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 11:40:12,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 11:40:12,112 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:40:12,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:40:12,112 INFO L85 PathProgramCache]: Analyzing trace with hash 24002856, now seen corresponding path program 1 times [2023-12-21 11:40:12,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:40:12,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741544542] [2023-12-21 11:40:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:40:12,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:40:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:40:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:40:12,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:40:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741544542] [2023-12-21 11:40:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741544542] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:40:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937772970] [2023-12-21 11:40:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:40:12,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:40:12,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:40:12,851 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 11:40:12,854 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 11:40:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:40:12,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:40:12,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:40:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:40:13,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:40:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:40:14,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937772970] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:40:14,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:40:14,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-21 11:40:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168161695] [2023-12-21 11:40:14,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:40:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 11:40:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:40:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 11:40:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:40:14,634 INFO L87 Difference]: Start difference. First operand 341228 states and 438277 transitions. Second operand has 29 states, 29 states have (on average 9.0) internal successors, (261), 28 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)