/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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:45:32,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:45:32,329 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 12:45:32,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:45:32,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:45:32,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:45:32,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:45:32,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:45:32,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:45:32,378 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:45:32,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:45:32,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:45:32,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:45:32,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:45:32,381 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:45:32,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:45:32,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:45:32,382 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:45:32,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:45:32,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:45:32,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:45:32,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:45:32,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:45:32,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:45:32,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:45:32,383 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:45:32,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:45:32,384 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:45:32,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:45:32,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:45:32,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:45:32,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:45:32,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:45:32,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:45:32,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:45:32,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:45:32,386 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:45:32,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:45:32,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:45:32,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:45:32,387 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:45:32,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:45:32,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:45:32,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:45:32,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:45:32,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:45:32,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:45:32,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:45:32,603 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:45:32,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-12-20 12:45:33,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:45:34,172 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:45:34,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-12-20 12:45:34,204 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ef4b938/3bb4302338544ef6a7c34ac40519395e/FLAG9bd2c5de3 [2023-12-20 12:45:34,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ef4b938/3bb4302338544ef6a7c34ac40519395e [2023-12-20 12:45:34,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:45:34,225 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:45:34,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:45:34,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:45:34,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:45:34,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:45:34" (1/1) ... [2023-12-20 12:45:34,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd901e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:34, skipping insertion in model container [2023-12-20 12:45:34,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:45:34" (1/1) ... [2023-12-20 12:45:34,347 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:45:34,614 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[6450,6463] [2023-12-20 12:45:34,651 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[9957,9970] [2023-12-20 12:45:35,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:45:35,314 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:45:35,354 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[6450,6463] [2023-12-20 12:45:35,359 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[9957,9970] [2023-12-20 12:45:35,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:45:35,802 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:45:35,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35 WrapperNode [2023-12-20 12:45:35,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:45:35,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:45:35,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:45:35,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:45:35,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:35,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,183 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-12-20 12:45:36,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:45:36,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:45:36,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:45:36,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:45:36,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,335 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]. [2023-12-20 12:45:36,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:45:36,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:45:36,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:45:36,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:45:36,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (1/1) ... [2023-12-20 12:45:36,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:45:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:45:36,690 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) [2023-12-20 12:45:36,694 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 [2023-12-20 12:45:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:45:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:45:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:45:36,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:45:36,783 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:45:36,785 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:45:40,349 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:45:40,411 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:45:40,411 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:45:40,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:45:40 BoogieIcfgContainer [2023-12-20 12:45:40,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:45:40,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:45:40,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:45:40,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:45:40,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:45:34" (1/3) ... [2023-12-20 12:45:40,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@803ad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:45:40, skipping insertion in model container [2023-12-20 12:45:40,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:45:35" (2/3) ... [2023-12-20 12:45:40,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@803ad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:45:40, skipping insertion in model container [2023-12-20 12:45:40,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:45:40" (3/3) ... [2023-12-20 12:45:40,419 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-12-20 12:45:40,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:45:40,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:45:40,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:45:40,501 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;@6937a81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:45:40,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:45:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:45:40,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:40,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:45:40,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:40,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:40,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2106044916, now seen corresponding path program 1 times [2023-12-20 12:45:40,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:40,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422118876] [2023-12-20 12:45:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:40,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:40,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422118876] [2023-12-20 12:45:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422118876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:40,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:40,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:45:40,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980458680] [2023-12-20 12:45:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:40,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:45:40,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:40,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:45:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:45:40,750 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:40,838 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-12-20 12:45:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:45:40,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-20 12:45:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:40,858 INFO L225 Difference]: With dead ends: 1597 [2023-12-20 12:45:40,859 INFO L226 Difference]: Without dead ends: 805 [2023-12-20 12:45:40,864 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 [2023-12-20 12:45:40,866 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:40,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-20 12:45:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-20 12:45:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-12-20 12:45:40,955 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2023-12-20 12:45:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:40,955 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-12-20 12:45:40,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-12-20 12:45:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:45:40,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:40,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:45:40,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:45:40,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:40,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1602116366, now seen corresponding path program 1 times [2023-12-20 12:45:40,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:40,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379786316] [2023-12-20 12:45:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379786316] [2023-12-20 12:45:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379786316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:41,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:41,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:45:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914885043] [2023-12-20 12:45:41,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:45:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:45:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:45:41,268 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:41,334 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2023-12-20 12:45:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:45:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-20 12:45:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:41,339 INFO L225 Difference]: With dead ends: 839 [2023-12-20 12:45:41,340 INFO L226 Difference]: Without dead ends: 805 [2023-12-20 12:45:41,340 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 [2023-12-20 12:45:41,341 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:41,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-20 12:45:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-20 12:45:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2023-12-20 12:45:41,356 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2023-12-20 12:45:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:41,357 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2023-12-20 12:45:41,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2023-12-20 12:45:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-20 12:45:41,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:41,359 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] [2023-12-20 12:45:41,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:45:41,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:41,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1997221712, now seen corresponding path program 1 times [2023-12-20 12:45:41,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:41,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870408068] [2023-12-20 12:45:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:41,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:41,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870408068] [2023-12-20 12:45:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870408068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:41,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:45:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253493534] [2023-12-20 12:45:41,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:41,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:45:41,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:45:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:41,450 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:44,717 INFO L93 Difference]: Finished difference Result 2309 states and 4381 transitions. [2023-12-20 12:45:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:45:44,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-20 12:45:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:44,725 INFO L225 Difference]: With dead ends: 2309 [2023-12-20 12:45:44,725 INFO L226 Difference]: Without dead ends: 1556 [2023-12-20 12:45:44,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:44,735 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 841 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:44,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 541 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 12:45:44,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-20 12:45:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-12-20 12:45:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.6003861003861004) internal successors, (2487), 1555 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2487 transitions. [2023-12-20 12:45:44,781 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2487 transitions. Word has length 29 [2023-12-20 12:45:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:44,786 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2487 transitions. [2023-12-20 12:45:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2487 transitions. [2023-12-20 12:45:44,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 12:45:44,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:44,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:45:44,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:45:44,792 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:44,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:44,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1530210848, now seen corresponding path program 1 times [2023-12-20 12:45:44,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:44,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719925587] [2023-12-20 12:45:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:44,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:44,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719925587] [2023-12-20 12:45:44,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719925587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:44,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:44,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:45:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86482450] [2023-12-20 12:45:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:44,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:45:44,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:44,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:45:44,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:45:44,876 INFO L87 Difference]: Start difference. First operand 1556 states and 2487 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:44,978 INFO L93 Difference]: Finished difference Result 1742 states and 2781 transitions. [2023-12-20 12:45:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 12:45:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-20 12:45:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:44,986 INFO L225 Difference]: With dead ends: 1742 [2023-12-20 12:45:44,986 INFO L226 Difference]: Without dead ends: 1711 [2023-12-20 12:45:44,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:45:44,988 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:44,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-12-20 12:45:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1585. [2023-12-20 12:45:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.600126342387871) internal successors, (2533), 1584 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2533 transitions. [2023-12-20 12:45:45,022 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2533 transitions. Word has length 32 [2023-12-20 12:45:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:45,075 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2533 transitions. [2023-12-20 12:45:45,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2533 transitions. [2023-12-20 12:45:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:45:45,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:45,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:45:45,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:45:45,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:45,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1777422384, now seen corresponding path program 1 times [2023-12-20 12:45:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:45,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867334518] [2023-12-20 12:45:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:45,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:45,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867334518] [2023-12-20 12:45:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867334518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:45,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:45,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:45:45,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94217959] [2023-12-20 12:45:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:45:45,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:45:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:45,126 INFO L87 Difference]: Start difference. First operand 1585 states and 2533 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:45,163 INFO L93 Difference]: Finished difference Result 1694 states and 2704 transitions. [2023-12-20 12:45:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:45:45,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-20 12:45:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:45,170 INFO L225 Difference]: With dead ends: 1694 [2023-12-20 12:45:45,170 INFO L226 Difference]: Without dead ends: 1634 [2023-12-20 12:45:45,171 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 [2023-12-20 12:45:45,172 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:45,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-12-20 12:45:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1630. [2023-12-20 12:45:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.5976658476658476) internal successors, (2601), 1629 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2601 transitions. [2023-12-20 12:45:45,202 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2601 transitions. Word has length 34 [2023-12-20 12:45:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:45,203 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2601 transitions. [2023-12-20 12:45:45,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2601 transitions. [2023-12-20 12:45:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:45:45,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:45,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:45:45,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:45:45,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:45,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1775277432, now seen corresponding path program 1 times [2023-12-20 12:45:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:45,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516173054] [2023-12-20 12:45:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516173054] [2023-12-20 12:45:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516173054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:45,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:45,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:45:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500941575] [2023-12-20 12:45:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:45:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:45:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:45:45,311 INFO L87 Difference]: Start difference. First operand 1630 states and 2601 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:45,383 INFO L93 Difference]: Finished difference Result 1737 states and 2765 transitions. [2023-12-20 12:45:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:45:45,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-20 12:45:45,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:45,390 INFO L225 Difference]: With dead ends: 1737 [2023-12-20 12:45:45,390 INFO L226 Difference]: Without dead ends: 1632 [2023-12-20 12:45:45,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:45:45,391 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 2948 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:45,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 1591 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-12-20 12:45:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2023-12-20 12:45:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.5964373464373465) internal successors, (2599), 1629 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2599 transitions. [2023-12-20 12:45:45,421 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2599 transitions. Word has length 34 [2023-12-20 12:45:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:45,421 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2599 transitions. [2023-12-20 12:45:45,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2599 transitions. [2023-12-20 12:45:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 12:45:45,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:45,422 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] [2023-12-20 12:45:45,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:45:45,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:45,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash 672590802, now seen corresponding path program 1 times [2023-12-20 12:45:45,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:45,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486535200] [2023-12-20 12:45:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:45,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:45,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:45,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486535200] [2023-12-20 12:45:45,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486535200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:45,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:45,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:45:45,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539417681] [2023-12-20 12:45:45,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:45,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:45:45,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:45,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:45:45,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:45:45,555 INFO L87 Difference]: Start difference. First operand 1630 states and 2599 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:45,598 INFO L93 Difference]: Finished difference Result 1638 states and 2608 transitions. [2023-12-20 12:45:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:45:45,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-20 12:45:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:45,606 INFO L225 Difference]: With dead ends: 1638 [2023-12-20 12:45:45,606 INFO L226 Difference]: Without dead ends: 1636 [2023-12-20 12:45:45,606 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 [2023-12-20 12:45:45,609 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:45,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-20 12:45:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2023-12-20 12:45:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.5943627450980393) internal successors, (2602), 1633 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2602 transitions. [2023-12-20 12:45:45,646 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2602 transitions. Word has length 35 [2023-12-20 12:45:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:45,646 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2602 transitions. [2023-12-20 12:45:45,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2602 transitions. [2023-12-20 12:45:45,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:45:45,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:45,647 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] [2023-12-20 12:45:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:45:45,647 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:45,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:45,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1662873624, now seen corresponding path program 1 times [2023-12-20 12:45:45,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:45,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238338903] [2023-12-20 12:45:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:45,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:45,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:45,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238338903] [2023-12-20 12:45:45,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238338903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:45,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:45,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:45:45,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830959355] [2023-12-20 12:45:45,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:45,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:45:45,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:45:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:45,686 INFO L87 Difference]: Start difference. First operand 1634 states and 2602 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:45,718 INFO L93 Difference]: Finished difference Result 1836 states and 2902 transitions. [2023-12-20 12:45:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:45:45,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-20 12:45:45,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:45,725 INFO L225 Difference]: With dead ends: 1836 [2023-12-20 12:45:45,725 INFO L226 Difference]: Without dead ends: 1727 [2023-12-20 12:45:45,726 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 [2023-12-20 12:45:45,727 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 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 [2023-12-20 12:45:45,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:45,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-12-20 12:45:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1725. [2023-12-20 12:45:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1723 states have (on average 1.5861868833430064) internal successors, (2733), 1724 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2733 transitions. [2023-12-20 12:45:45,762 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2733 transitions. Word has length 36 [2023-12-20 12:45:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:45,763 INFO L495 AbstractCegarLoop]: Abstraction has 1725 states and 2733 transitions. [2023-12-20 12:45:45,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2733 transitions. [2023-12-20 12:45:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:45:45,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:45,763 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] [2023-12-20 12:45:45,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:45:45,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:45,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1743360232, now seen corresponding path program 1 times [2023-12-20 12:45:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:45,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516728474] [2023-12-20 12:45:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:45,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516728474] [2023-12-20 12:45:45,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516728474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:45,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:45,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:45:45,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096000031] [2023-12-20 12:45:45,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:45,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:45:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:45,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:45:45,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:45,798 INFO L87 Difference]: Start difference. First operand 1725 states and 2733 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:45,832 INFO L93 Difference]: Finished difference Result 2093 states and 3267 transitions. [2023-12-20 12:45:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:45:45,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-20 12:45:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:45,839 INFO L225 Difference]: With dead ends: 2093 [2023-12-20 12:45:45,839 INFO L226 Difference]: Without dead ends: 1893 [2023-12-20 12:45:45,840 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 [2023-12-20 12:45:45,840 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 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 [2023-12-20 12:45:45,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:45,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-12-20 12:45:45,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1891. [2023-12-20 12:45:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1889 states have (on average 1.5685547908946533) internal successors, (2963), 1890 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2963 transitions. [2023-12-20 12:45:45,874 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2963 transitions. Word has length 36 [2023-12-20 12:45:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:45,874 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 2963 transitions. [2023-12-20 12:45:45,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2963 transitions. [2023-12-20 12:45:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 12:45:45,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:45,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:45:45,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:45:45,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:45,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1790190323, now seen corresponding path program 1 times [2023-12-20 12:45:45,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:45,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859482825] [2023-12-20 12:45:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:45,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:45,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859482825] [2023-12-20 12:45:45,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859482825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:45,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:45,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:45:45,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693013370] [2023-12-20 12:45:45,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:45,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:45:45,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:45:45,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:45,916 INFO L87 Difference]: Start difference. First operand 1891 states and 2963 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:45,953 INFO L93 Difference]: Finished difference Result 2282 states and 3537 transitions. [2023-12-20 12:45:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:45:45,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-20 12:45:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:45,960 INFO L225 Difference]: With dead ends: 2282 [2023-12-20 12:45:45,960 INFO L226 Difference]: Without dead ends: 2063 [2023-12-20 12:45:45,961 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 [2023-12-20 12:45:45,961 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 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 [2023-12-20 12:45:45,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-12-20 12:45:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2061. [2023-12-20 12:45:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2059 states have (on average 1.554638173870811) internal successors, (3201), 2060 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3201 transitions. [2023-12-20 12:45:45,998 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3201 transitions. Word has length 38 [2023-12-20 12:45:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:45,998 INFO L495 AbstractCegarLoop]: Abstraction has 2061 states and 3201 transitions. [2023-12-20 12:45:45,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3201 transitions. [2023-12-20 12:45:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:45:45,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:45,999 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] [2023-12-20 12:45:45,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:45:45,999 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:45,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1801881872, now seen corresponding path program 1 times [2023-12-20 12:45:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:46,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366667038] [2023-12-20 12:45:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:45:46,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:46,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366667038] [2023-12-20 12:45:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366667038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:46,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:46,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:45:46,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824321686] [2023-12-20 12:45:46,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:46,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:45:46,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:46,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:45:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:45:46,075 INFO L87 Difference]: Start difference. First operand 2061 states and 3201 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:46,176 INFO L93 Difference]: Finished difference Result 3785 states and 5649 transitions. [2023-12-20 12:45:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:45:46,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:45:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:46,187 INFO L225 Difference]: With dead ends: 3785 [2023-12-20 12:45:46,187 INFO L226 Difference]: Without dead ends: 3251 [2023-12-20 12:45:46,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:45:46,188 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3051 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:46,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3138 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2023-12-20 12:45:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2593. [2023-12-20 12:45:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2591 states have (on average 1.5241219606329603) internal successors, (3949), 2592 states have internal predecessors, (3949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3949 transitions. [2023-12-20 12:45:46,243 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3949 transitions. Word has length 50 [2023-12-20 12:45:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:46,243 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 3949 transitions. [2023-12-20 12:45:46,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3949 transitions. [2023-12-20 12:45:46,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:45:46,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:46,244 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] [2023-12-20 12:45:46,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:45:46,244 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:46,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:46,245 INFO L85 PathProgramCache]: Analyzing trace with hash 913148432, now seen corresponding path program 1 times [2023-12-20 12:45:46,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:46,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127321652] [2023-12-20 12:45:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:46,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:45:46,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:46,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127321652] [2023-12-20 12:45:46,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127321652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:46,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:46,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:45:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143771305] [2023-12-20 12:45:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:45:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:46,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:45:46,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:45:46,327 INFO L87 Difference]: Start difference. First operand 2593 states and 3949 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:46,440 INFO L93 Difference]: Finished difference Result 4317 states and 6397 transitions. [2023-12-20 12:45:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:45:46,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:45:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:46,453 INFO L225 Difference]: With dead ends: 4317 [2023-12-20 12:45:46,453 INFO L226 Difference]: Without dead ends: 3783 [2023-12-20 12:45:46,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:45:46,455 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3047 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:46,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3142 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2023-12-20 12:45:46,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3393. [2023-12-20 12:45:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3391 states have (on average 1.4924800943674432) internal successors, (5061), 3392 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 5061 transitions. [2023-12-20 12:45:46,599 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 5061 transitions. Word has length 50 [2023-12-20 12:45:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:46,599 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 5061 transitions. [2023-12-20 12:45:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 5061 transitions. [2023-12-20 12:45:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:45:46,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:46,600 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:45:46,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:45:46,600 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:46,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash 615190968, now seen corresponding path program 1 times [2023-12-20 12:45:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:46,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33140504] [2023-12-20 12:45:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:46,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:46,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33140504] [2023-12-20 12:45:46,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33140504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:46,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:46,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:45:46,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453252703] [2023-12-20 12:45:46,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:46,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:45:46,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:46,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:45:46,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:46,680 INFO L87 Difference]: Start difference. First operand 3393 states and 5061 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:46,745 INFO L93 Difference]: Finished difference Result 4756 states and 7011 transitions. [2023-12-20 12:45:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:45:46,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 12:45:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:46,768 INFO L225 Difference]: With dead ends: 4756 [2023-12-20 12:45:46,768 INFO L226 Difference]: Without dead ends: 2890 [2023-12-20 12:45:46,772 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 [2023-12-20 12:45:46,773 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 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 [2023-12-20 12:45:46,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2023-12-20 12:45:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888. [2023-12-20 12:45:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2886 states have (on average 1.5107415107415108) internal successors, (4360), 2887 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4360 transitions. [2023-12-20 12:45:46,861 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4360 transitions. Word has length 52 [2023-12-20 12:45:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:46,861 INFO L495 AbstractCegarLoop]: Abstraction has 2888 states and 4360 transitions. [2023-12-20 12:45:46,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4360 transitions. [2023-12-20 12:45:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:45:46,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:46,864 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] [2023-12-20 12:45:46,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:45:46,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:46,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash -759813067, now seen corresponding path program 1 times [2023-12-20 12:45:46,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320046349] [2023-12-20 12:45:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:45:46,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320046349] [2023-12-20 12:45:46,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320046349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:46,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:46,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:45:46,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218524076] [2023-12-20 12:45:46,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:46,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:45:46,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:46,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:45:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:45:46,966 INFO L87 Difference]: Start difference. First operand 2888 states and 4360 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:47,089 INFO L93 Difference]: Finished difference Result 4048 states and 6020 transitions. [2023-12-20 12:45:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:45:47,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 12:45:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:47,096 INFO L225 Difference]: With dead ends: 4048 [2023-12-20 12:45:47,096 INFO L226 Difference]: Without dead ends: 3662 [2023-12-20 12:45:47,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:45:47,098 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3045 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:47,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3045 Valid, 3130 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2023-12-20 12:45:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3272. [2023-12-20 12:45:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3270 states have (on average 1.4996941896024465) internal successors, (4904), 3271 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4904 transitions. [2023-12-20 12:45:47,200 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4904 transitions. Word has length 52 [2023-12-20 12:45:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:47,201 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4904 transitions. [2023-12-20 12:45:47,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4904 transitions. [2023-12-20 12:45:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 12:45:47,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:47,202 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] [2023-12-20 12:45:47,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:45:47,202 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:47,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:47,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1640470092, now seen corresponding path program 1 times [2023-12-20 12:45:47,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:47,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165066522] [2023-12-20 12:45:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:47,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:47,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:47,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165066522] [2023-12-20 12:45:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165066522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:47,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:47,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:45:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106697632] [2023-12-20 12:45:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:47,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:45:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:45:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:47,291 INFO L87 Difference]: Start difference. First operand 3272 states and 4904 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:47,349 INFO L93 Difference]: Finished difference Result 4140 states and 6130 transitions. [2023-12-20 12:45:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:45:47,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 12:45:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:47,355 INFO L225 Difference]: With dead ends: 4140 [2023-12-20 12:45:47,355 INFO L226 Difference]: Without dead ends: 2410 [2023-12-20 12:45:47,359 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 [2023-12-20 12:45:47,359 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 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 [2023-12-20 12:45:47,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2023-12-20 12:45:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2408. [2023-12-20 12:45:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2406 states have (on average 1.5220282626766417) internal successors, (3662), 2407 states have internal predecessors, (3662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3662 transitions. [2023-12-20 12:45:47,409 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3662 transitions. Word has length 53 [2023-12-20 12:45:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:47,409 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3662 transitions. [2023-12-20 12:45:47,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3662 transitions. [2023-12-20 12:45:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 12:45:47,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:47,410 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] [2023-12-20 12:45:47,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:45:47,410 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:47,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:47,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1012299426, now seen corresponding path program 1 times [2023-12-20 12:45:47,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:47,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326441954] [2023-12-20 12:45:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:47,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:47,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:47,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326441954] [2023-12-20 12:45:47,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326441954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:45:47,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:45:47,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:45:47,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809092259] [2023-12-20 12:45:47,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:45:47,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:45:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:45:47,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:45:47,497 INFO L87 Difference]: Start difference. First operand 2408 states and 3662 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:47,534 INFO L93 Difference]: Finished difference Result 2844 states and 4267 transitions. [2023-12-20 12:45:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:45:47,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 12:45:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:47,538 INFO L225 Difference]: With dead ends: 2844 [2023-12-20 12:45:47,538 INFO L226 Difference]: Without dead ends: 1978 [2023-12-20 12:45:47,539 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 [2023-12-20 12:45:47,539 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 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 [2023-12-20 12:45:47,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:45:47,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-12-20 12:45:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1976. [2023-12-20 12:45:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1974 states have (on average 1.5450861195542047) internal successors, (3050), 1975 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 3050 transitions. [2023-12-20 12:45:47,574 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 3050 transitions. Word has length 55 [2023-12-20 12:45:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:47,574 INFO L495 AbstractCegarLoop]: Abstraction has 1976 states and 3050 transitions. [2023-12-20 12:45:47,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 3050 transitions. [2023-12-20 12:45:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 12:45:47,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:47,575 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:45:47,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 12:45:47,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:47,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:47,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1129129232, now seen corresponding path program 1 times [2023-12-20 12:45:47,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:47,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269626243] [2023-12-20 12:45:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:47,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:50,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:50,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269626243] [2023-12-20 12:45:50,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269626243] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:45:50,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115301655] [2023-12-20 12:45:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:50,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:45:50,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:45:50,180 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) [2023-12-20 12:45:50,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 12:45:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:50,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 12:45:50,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:45:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:45:50,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:45:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:45:50,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115301655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:45:50,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:45:50,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:45:50,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903081476] [2023-12-20 12:45:50,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:45:50,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:45:50,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:50,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:45:50,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:45:50,587 INFO L87 Difference]: Start difference. First operand 1976 states and 3050 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:53,681 INFO L93 Difference]: Finished difference Result 4219 states and 5998 transitions. [2023-12-20 12:45:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 12:45:53,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-20 12:45:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:53,689 INFO L225 Difference]: With dead ends: 4219 [2023-12-20 12:45:53,689 INFO L226 Difference]: Without dead ends: 3785 [2023-12-20 12:45:53,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:45:53,692 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 18498 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18498 SdHoareTripleChecker+Valid, 6207 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:53,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18498 Valid, 6207 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:45:53,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2023-12-20 12:45:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3597. [2023-12-20 12:45:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3595 states have (on average 1.4105702364394994) internal successors, (5071), 3596 states have internal predecessors, (5071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5071 transitions. [2023-12-20 12:45:53,818 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5071 transitions. Word has length 57 [2023-12-20 12:45:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:53,818 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 5071 transitions. [2023-12-20 12:45:53,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5071 transitions. [2023-12-20 12:45:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:45:53,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:53,821 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] [2023-12-20 12:45:53,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 12:45:54,027 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,SelfDestructingSolverStorable16 [2023-12-20 12:45:54,029 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:54,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:54,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1944087233, now seen corresponding path program 1 times [2023-12-20 12:45:54,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:54,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925404255] [2023-12-20 12:45:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:54,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:55,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925404255] [2023-12-20 12:45:55,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925404255] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:45:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665701108] [2023-12-20 12:45:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:55,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:45:55,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:45:55,089 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) [2023-12-20 12:45:55,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 12:45:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:55,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:45:55,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:45:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:55,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:45:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:56,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665701108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:45:56,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:45:56,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-20 12:45:56,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664547194] [2023-12-20 12:45:56,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:45:56,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:45:56,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:56,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:45:56,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:45:56,554 INFO L87 Difference]: Start difference. First operand 3597 states and 5071 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:45:57,565 INFO L93 Difference]: Finished difference Result 7715 states and 10261 transitions. [2023-12-20 12:45:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 12:45:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-20 12:45:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:45:57,575 INFO L225 Difference]: With dead ends: 7715 [2023-12-20 12:45:57,575 INFO L226 Difference]: Without dead ends: 5937 [2023-12-20 12:45:57,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:45:57,580 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 7671 mSDsluCounter, 7836 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7671 SdHoareTripleChecker+Valid, 9329 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:57,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7671 Valid, 9329 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:45:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5937 states. [2023-12-20 12:45:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5937 to 5551. [2023-12-20 12:45:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5549 states have (on average 1.3470895656875113) internal successors, (7475), 5550 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 7475 transitions. [2023-12-20 12:45:57,770 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 7475 transitions. Word has length 58 [2023-12-20 12:45:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:45:57,770 INFO L495 AbstractCegarLoop]: Abstraction has 5551 states and 7475 transitions. [2023-12-20 12:45:57,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:45:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 7475 transitions. [2023-12-20 12:45:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:45:57,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:45:57,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:45:57,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 12:45:57,983 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,SelfDestructingSolverStorable17 [2023-12-20 12:45:57,984 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:45:57,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:45:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1421483023, now seen corresponding path program 1 times [2023-12-20 12:45:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:45:57,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41214836] [2023-12-20 12:45:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:57,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:45:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:58,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:45:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41214836] [2023-12-20 12:45:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41214836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:45:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061798641] [2023-12-20 12:45:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:45:58,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:45:58,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:45:58,258 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) [2023-12-20 12:45:58,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 12:45:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:45:58,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:45:58,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:45:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:58,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:45:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:45:59,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061798641] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:45:59,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:45:59,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-20 12:45:59,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457576652] [2023-12-20 12:45:59,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:45:59,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:45:59,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:45:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:45:59,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:45:59,583 INFO L87 Difference]: Start difference. First operand 5551 states and 7475 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:00,325 INFO L93 Difference]: Finished difference Result 12512 states and 16171 transitions. [2023-12-20 12:46:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 12:46:00,326 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-20 12:46:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:00,340 INFO L225 Difference]: With dead ends: 12512 [2023-12-20 12:46:00,340 INFO L226 Difference]: Without dead ends: 9090 [2023-12-20 12:46:00,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:46:00,348 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 13483 mSDsluCounter, 7648 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13483 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:00,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13483 Valid, 9140 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:46:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9090 states. [2023-12-20 12:46:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9090 to 8852. [2023-12-20 12:46:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8852 states, 8850 states have (on average 1.307683615819209) internal successors, (11573), 8851 states have internal predecessors, (11573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 11573 transitions. [2023-12-20 12:46:00,742 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 11573 transitions. Word has length 58 [2023-12-20 12:46:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:00,742 INFO L495 AbstractCegarLoop]: Abstraction has 8852 states and 11573 transitions. [2023-12-20 12:46:00,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 11573 transitions. [2023-12-20 12:46:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:46:00,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:00,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:46:00,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 12:46:00,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:00,951 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:00,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -547926257, now seen corresponding path program 1 times [2023-12-20 12:46:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:00,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794350809] [2023-12-20 12:46:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:00,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:01,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:01,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794350809] [2023-12-20 12:46:01,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794350809] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:46:01,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530932168] [2023-12-20 12:46:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:01,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:01,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:46:01,324 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) [2023-12-20 12:46:01,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 12:46:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:01,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:46:01,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:46:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:02,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:46:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:02,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530932168] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:46:02,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:46:02,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 12:46:02,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628591415] [2023-12-20 12:46:02,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:46:02,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:46:02,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:02,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:46:02,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:46:02,632 INFO L87 Difference]: Start difference. First operand 8852 states and 11573 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:03,452 INFO L93 Difference]: Finished difference Result 15747 states and 20181 transitions. [2023-12-20 12:46:03,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:46:03,453 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-20 12:46:03,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:03,465 INFO L225 Difference]: With dead ends: 15747 [2023-12-20 12:46:03,465 INFO L226 Difference]: Without dead ends: 9546 [2023-12-20 12:46:03,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 12:46:03,473 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 6219 mSDsluCounter, 4738 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6219 SdHoareTripleChecker+Valid, 6238 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:03,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6219 Valid, 6238 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:46:03,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2023-12-20 12:46:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 8964. [2023-12-20 12:46:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8962 states have (on average 1.2959160901584468) internal successors, (11614), 8963 states have internal predecessors, (11614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 11614 transitions. [2023-12-20 12:46:03,804 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 11614 transitions. Word has length 58 [2023-12-20 12:46:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:03,804 INFO L495 AbstractCegarLoop]: Abstraction has 8964 states and 11614 transitions. [2023-12-20 12:46:03,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 11614 transitions. [2023-12-20 12:46:03,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:46:03,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:03,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:46:03,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 12:46:04,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:04,013 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:04,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash 521807150, now seen corresponding path program 1 times [2023-12-20 12:46:04,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:04,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089625790] [2023-12-20 12:46:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:04,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089625790] [2023-12-20 12:46:04,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089625790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:46:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242606990] [2023-12-20 12:46:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:04,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:04,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:46:04,785 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) [2023-12-20 12:46:04,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 12:46:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:04,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 12:46:04,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:46:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:05,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:46:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:06,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242606990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:46:06,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:46:06,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-20 12:46:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000328471] [2023-12-20 12:46:06,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:46:06,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 12:46:06,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 12:46:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 12:46:06,385 INFO L87 Difference]: Start difference. First operand 8964 states and 11614 transitions. Second operand has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:11,575 INFO L93 Difference]: Finished difference Result 15824 states and 20099 transitions. [2023-12-20 12:46:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-20 12:46:11,575 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 12:46:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:11,591 INFO L225 Difference]: With dead ends: 15824 [2023-12-20 12:46:11,591 INFO L226 Difference]: Without dead ends: 11056 [2023-12-20 12:46:11,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2207, Invalid=9135, Unknown=0, NotChecked=0, Total=11342 [2023-12-20 12:46:11,605 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 10622 mSDsluCounter, 21423 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10622 SdHoareTripleChecker+Valid, 22936 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:11,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10622 Valid, 22936 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 12:46:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2023-12-20 12:46:11,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 6362. [2023-12-20 12:46:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 6360 states have (on average 1.3187106918238993) internal successors, (8387), 6361 states have internal predecessors, (8387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8387 transitions. [2023-12-20 12:46:11,828 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8387 transitions. Word has length 59 [2023-12-20 12:46:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:11,828 INFO L495 AbstractCegarLoop]: Abstraction has 6362 states and 8387 transitions. [2023-12-20 12:46:11,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8387 transitions. [2023-12-20 12:46:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 12:46:11,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:11,829 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] [2023-12-20 12:46:11,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 12:46:12,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:12,037 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:12,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash 266400177, now seen corresponding path program 1 times [2023-12-20 12:46:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:12,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086763570] [2023-12-20 12:46:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:12,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:12,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086763570] [2023-12-20 12:46:12,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086763570] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:46:12,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865732398] [2023-12-20 12:46:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:12,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:46:12,775 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) [2023-12-20 12:46:12,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 12:46:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:12,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 12:46:12,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:46:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:13,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:46:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:14,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865732398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:46:14,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:46:14,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-20 12:46:14,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332381200] [2023-12-20 12:46:14,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:46:14,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 12:46:14,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:14,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 12:46:14,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-12-20 12:46:14,298 INFO L87 Difference]: Start difference. First operand 6362 states and 8387 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:15,666 INFO L93 Difference]: Finished difference Result 7692 states and 10031 transitions. [2023-12-20 12:46:15,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 12:46:15,668 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 12:46:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:15,674 INFO L225 Difference]: With dead ends: 7692 [2023-12-20 12:46:15,675 INFO L226 Difference]: Without dead ends: 5088 [2023-12-20 12:46:15,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:46:15,679 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 11127 mSDsluCounter, 17854 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11127 SdHoareTripleChecker+Valid, 19347 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:15,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11127 Valid, 19347 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:46:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2023-12-20 12:46:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 4984. [2023-12-20 12:46:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4982 states have (on average 1.341830590124448) internal successors, (6685), 4983 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 6685 transitions. [2023-12-20 12:46:15,879 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 6685 transitions. Word has length 60 [2023-12-20 12:46:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:15,879 INFO L495 AbstractCegarLoop]: Abstraction has 4984 states and 6685 transitions. [2023-12-20 12:46:15,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 6685 transitions. [2023-12-20 12:46:15,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:46:15,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:15,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:46:15,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 12:46:16,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:16,088 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:16,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:16,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1950336645, now seen corresponding path program 1 times [2023-12-20 12:46:16,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:16,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233309219] [2023-12-20 12:46:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:16,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:16,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233309219] [2023-12-20 12:46:16,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233309219] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:46:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585331443] [2023-12-20 12:46:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:16,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:16,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:46:16,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:46:16,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 12:46:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:17,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:46:17,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:46:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:17,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:46:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:19,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585331443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:46:19,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:46:19,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 12:46:19,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713325021] [2023-12-20 12:46:19,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:46:19,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 12:46:19,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 12:46:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 12:46:19,068 INFO L87 Difference]: Start difference. First operand 4984 states and 6685 transitions. Second operand has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 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) [2023-12-20 12:46:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:30,506 INFO L93 Difference]: Finished difference Result 12212 states and 15715 transitions. [2023-12-20 12:46:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-20 12:46:30,507 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 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 97 [2023-12-20 12:46:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:30,513 INFO L225 Difference]: With dead ends: 12212 [2023-12-20 12:46:30,514 INFO L226 Difference]: Without dead ends: 9526 [2023-12-20 12:46:30,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10828 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=4645, Invalid=27575, Unknown=0, NotChecked=0, Total=32220 [2023-12-20 12:46:30,522 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 25834 mSDsluCounter, 16106 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25834 SdHoareTripleChecker+Valid, 17647 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:30,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25834 Valid, 17647 Invalid, 1965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 12:46:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9526 states. [2023-12-20 12:46:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9526 to 7230. [2023-12-20 12:46:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 7228 states have (on average 1.3045102379634754) internal successors, (9429), 7229 states have internal predecessors, (9429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 9429 transitions. [2023-12-20 12:46:30,914 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 9429 transitions. Word has length 97 [2023-12-20 12:46:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:30,914 INFO L495 AbstractCegarLoop]: Abstraction has 7230 states and 9429 transitions. [2023-12-20 12:46:30,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 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) [2023-12-20 12:46:30,914 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 9429 transitions. [2023-12-20 12:46:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:46:30,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:30,916 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:46:30,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 12:46:31,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:31,122 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:31,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 933577673, now seen corresponding path program 1 times [2023-12-20 12:46:31,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942721281] [2023-12-20 12:46:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:31,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:31,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942721281] [2023-12-20 12:46:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942721281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:46:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789847087] [2023-12-20 12:46:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:31,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:31,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:46:31,826 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:46:31,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 12:46:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:31,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 12:46:31,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:46:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:34,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:46:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789847087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:46:43,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:46:43,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 25] total 60 [2023-12-20 12:46:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232174544] [2023-12-20 12:46:43,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:46:43,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:46:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:46:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3109, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:46:43,016 INFO L87 Difference]: Start difference. First operand 7230 states and 9429 transitions. Second operand has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:20,080 INFO L93 Difference]: Finished difference Result 21011 states and 26307 transitions. [2023-12-20 12:47:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2023-12-20 12:47:20,080 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 12:47:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:20,094 INFO L225 Difference]: With dead ends: 21011 [2023-12-20 12:47:20,094 INFO L226 Difference]: Without dead ends: 16952 [2023-12-20 12:47:20,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58781 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=17856, Invalid=124650, Unknown=0, NotChecked=0, Total=142506 [2023-12-20 12:47:20,110 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 29903 mSDsluCounter, 30389 mSDsCounter, 0 mSdLazyCounter, 3320 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29903 SdHoareTripleChecker+Valid, 31982 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:20,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29903 Valid, 31982 Invalid, 3676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [356 Valid, 3320 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 12:47:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16952 states. [2023-12-20 12:47:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16952 to 8159. [2023-12-20 12:47:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8159 states, 8157 states have (on average 1.2852764496751257) internal successors, (10484), 8158 states have internal predecessors, (10484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8159 states to 8159 states and 10484 transitions. [2023-12-20 12:47:20,715 INFO L78 Accepts]: Start accepts. Automaton has 8159 states and 10484 transitions. Word has length 97 [2023-12-20 12:47:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:20,716 INFO L495 AbstractCegarLoop]: Abstraction has 8159 states and 10484 transitions. [2023-12-20 12:47:20,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 8159 states and 10484 transitions. [2023-12-20 12:47:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:47:20,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:20,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:47:20,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 12:47:20,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 12:47:20,924 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:20,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash -237249868, now seen corresponding path program 1 times [2023-12-20 12:47:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:20,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027192093] [2023-12-20 12:47:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:20,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 12:47:21,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027192093] [2023-12-20 12:47:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027192093] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142134215] [2023-12-20 12:47:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:21,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:21,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:21,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:21,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 12:47:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:21,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 12:47:21,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:23,334 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:23,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:26,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142134215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:26,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:26,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2023-12-20 12:47:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538366634] [2023-12-20 12:47:26,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 12:47:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 12:47:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:47:26,088 INFO L87 Difference]: Start difference. First operand 8159 states and 10484 transitions. Second operand has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:51,842 INFO L93 Difference]: Finished difference Result 14240 states and 17730 transitions. [2023-12-20 12:47:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-12-20 12:47:51,842 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-20 12:47:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:51,852 INFO L225 Difference]: With dead ends: 14240 [2023-12-20 12:47:51,852 INFO L226 Difference]: Without dead ends: 11532 [2023-12-20 12:47:51,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16843 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=7233, Invalid=43617, Unknown=0, NotChecked=0, Total=50850 [2023-12-20 12:47:51,857 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 25737 mSDsluCounter, 34855 mSDsCounter, 0 mSdLazyCounter, 4488 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25737 SdHoareTripleChecker+Valid, 36528 SdHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 4488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:51,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25737 Valid, 36528 Invalid, 4780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [292 Valid, 4488 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 12:47:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11532 states. [2023-12-20 12:47:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11532 to 8549. [2023-12-20 12:47:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8549 states, 8547 states have (on average 1.2791622791622792) internal successors, (10933), 8548 states have internal predecessors, (10933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8549 states to 8549 states and 10933 transitions. [2023-12-20 12:47:52,473 INFO L78 Accepts]: Start accepts. Automaton has 8549 states and 10933 transitions. Word has length 98 [2023-12-20 12:47:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:52,473 INFO L495 AbstractCegarLoop]: Abstraction has 8549 states and 10933 transitions. [2023-12-20 12:47:52,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 8549 states and 10933 transitions. [2023-12-20 12:47:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:47:52,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:52,476 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:47:52,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 12:47:52,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 12:47:52,685 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:52,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1927036061, now seen corresponding path program 1 times [2023-12-20 12:47:52,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:52,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088900699] [2023-12-20 12:47:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:52,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088900699] [2023-12-20 12:47:53,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088900699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112447633] [2023-12-20 12:47:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:53,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:53,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:53,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:53,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 12:47:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:53,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 12:47:53,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:55,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112447633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:58,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:58,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 21] total 58 [2023-12-20 12:47:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244502629] [2023-12-20 12:47:58,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:58,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 12:47:58,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 12:47:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 12:47:58,898 INFO L87 Difference]: Start difference. First operand 8549 states and 10933 transitions. Second operand has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 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) [2023-12-20 12:48:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:48:45,233 INFO L93 Difference]: Finished difference Result 21871 states and 27061 transitions. [2023-12-20 12:48:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2023-12-20 12:48:45,233 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 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 99 [2023-12-20 12:48:45,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:48:45,249 INFO L225 Difference]: With dead ends: 21871 [2023-12-20 12:48:45,250 INFO L226 Difference]: Without dead ends: 20002 [2023-12-20 12:48:45,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48263 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=15068, Invalid=104302, Unknown=0, NotChecked=0, Total=119370 [2023-12-20 12:48:45,257 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 23136 mSDsluCounter, 34486 mSDsCounter, 0 mSdLazyCounter, 4235 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23136 SdHoareTripleChecker+Valid, 36119 SdHoareTripleChecker+Invalid, 4524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 4235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:48:45,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23136 Valid, 36119 Invalid, 4524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [289 Valid, 4235 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 12:48:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20002 states. [2023-12-20 12:48:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20002 to 17891. [2023-12-20 12:48:46,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17891 states, 17889 states have (on average 1.2506568282184582) internal successors, (22373), 17890 states have internal predecessors, (22373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17891 states to 17891 states and 22373 transitions. [2023-12-20 12:48:46,701 INFO L78 Accepts]: Start accepts. Automaton has 17891 states and 22373 transitions. Word has length 99 [2023-12-20 12:48:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:48:46,702 INFO L495 AbstractCegarLoop]: Abstraction has 17891 states and 22373 transitions. [2023-12-20 12:48:46,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 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) [2023-12-20 12:48:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 17891 states and 22373 transitions. [2023-12-20 12:48:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:48:46,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:48:46,704 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:48:46,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 12:48:46,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 12:48:46,904 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:48:46,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:48:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1042354079, now seen corresponding path program 1 times [2023-12-20 12:48:46,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:48:46,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369987076] [2023-12-20 12:48:46,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:48:46,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:48:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:48:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:48,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:48:48,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369987076] [2023-12-20 12:48:48,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369987076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:48:48,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614794830] [2023-12-20 12:48:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:48:48,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:48:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:48:48,643 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:48:48,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 12:48:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:48:48,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 12:48:48,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:48:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:50,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:48:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:57,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614794830] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:48:57,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:48:57,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 21] total 63 [2023-12-20 12:48:57,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715278750] [2023-12-20 12:48:57,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:48:57,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-20 12:48:57,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:48:57,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-20 12:48:57,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=3568, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 12:48:57,493 INFO L87 Difference]: Start difference. First operand 17891 states and 22373 transitions. Second operand has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:51:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:51:51,167 INFO L93 Difference]: Finished difference Result 56942 states and 69592 transitions. [2023-12-20 12:51:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 500 states. [2023-12-20 12:51:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 12:51:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:51:51,210 INFO L225 Difference]: With dead ends: 56942 [2023-12-20 12:51:51,210 INFO L226 Difference]: Without dead ends: 48978 [2023-12-20 12:51:51,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131286 ImplicationChecksByTransitivity, 162.5s TimeCoverageRelationStatistics Valid=38252, Invalid=272554, Unknown=0, NotChecked=0, Total=310806 [2023-12-20 12:51:51,232 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 27144 mSDsluCounter, 31283 mSDsCounter, 0 mSdLazyCounter, 7718 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27144 SdHoareTripleChecker+Valid, 32936 SdHoareTripleChecker+Invalid, 8268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 7718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:51:51,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27144 Valid, 32936 Invalid, 8268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [550 Valid, 7718 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-20 12:51:51,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48978 states. [2023-12-20 12:51:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48978 to 25628. [2023-12-20 12:51:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25628 states, 25626 states have (on average 1.239210177163818) internal successors, (31756), 25627 states have internal predecessors, (31756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:51:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25628 states to 25628 states and 31756 transitions. [2023-12-20 12:51:53,952 INFO L78 Accepts]: Start accepts. Automaton has 25628 states and 31756 transitions. Word has length 99 [2023-12-20 12:51:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:51:53,952 INFO L495 AbstractCegarLoop]: Abstraction has 25628 states and 31756 transitions. [2023-12-20 12:51:53,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:51:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 25628 states and 31756 transitions. [2023-12-20 12:51:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:51:53,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:51:53,955 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:51:53,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 12:51:54,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 12:51:54,161 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:51:54,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:51:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1115210756, now seen corresponding path program 1 times [2023-12-20 12:51:54,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:51:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736565201] [2023-12-20 12:51:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:51:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:51:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:51:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:51:55,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:51:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736565201] [2023-12-20 12:51:55,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736565201] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:51:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017407098] [2023-12-20 12:51:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:51:55,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:51:55,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:51:55,146 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:51:55,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 12:51:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:51:55,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:51:55,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:51:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:51:57,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:52:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:52:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017407098] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:52:00,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:52:00,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 62 [2023-12-20 12:52:00,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496601382] [2023-12-20 12:52:00,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:52:00,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 12:52:00,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:52:00,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 12:52:00,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3410, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 12:52:00,384 INFO L87 Difference]: Start difference. First operand 25628 states and 31756 transitions. Second operand has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:52:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:52:23,663 INFO L93 Difference]: Finished difference Result 38497 states and 47035 transitions. [2023-12-20 12:52:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-20 12:52:23,664 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 12:52:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:52:23,694 INFO L225 Difference]: With dead ends: 38497 [2023-12-20 12:52:23,694 INFO L226 Difference]: Without dead ends: 33985 [2023-12-20 12:52:23,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12040 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=5036, Invalid=33576, Unknown=0, NotChecked=0, Total=38612 [2023-12-20 12:52:23,703 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 24451 mSDsluCounter, 23689 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24451 SdHoareTripleChecker+Valid, 25234 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:52:23,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24451 Valid, 25234 Invalid, 2343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [209 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 12:52:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33985 states. [2023-12-20 12:52:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33985 to 28477. [2023-12-20 12:52:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28477 states, 28475 states have (on average 1.2364179104477613) internal successors, (35207), 28476 states have internal predecessors, (35207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:52:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28477 states to 28477 states and 35207 transitions. [2023-12-20 12:52:27,010 INFO L78 Accepts]: Start accepts. Automaton has 28477 states and 35207 transitions. Word has length 100 [2023-12-20 12:52:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:52:27,010 INFO L495 AbstractCegarLoop]: Abstraction has 28477 states and 35207 transitions. [2023-12-20 12:52:27,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:52:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 28477 states and 35207 transitions. [2023-12-20 12:52:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:52:27,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:52:27,013 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:52:27,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 12:52:27,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 12:52:27,218 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:52:27,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:52:27,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1530746744, now seen corresponding path program 1 times [2023-12-20 12:52:27,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:52:27,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900926185] [2023-12-20 12:52:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:52:27,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:52:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:52:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:52:28,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:52:28,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900926185] [2023-12-20 12:52:28,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900926185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:52:28,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788971158] [2023-12-20 12:52:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:52:28,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:52:28,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:52:28,368 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:52:28,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 12:52:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:52:28,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 12:52:28,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:52:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:52:30,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:52:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:52:34,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788971158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:52:34,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:52:34,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 19] total 60 [2023-12-20 12:52:34,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611240830] [2023-12-20 12:52:34,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:52:34,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:52:34,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:52:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:52:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3170, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:52:34,043 INFO L87 Difference]: Start difference. First operand 28477 states and 35207 transitions. Second operand has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:53:13,309 INFO L93 Difference]: Finished difference Result 47555 states and 58243 transitions. [2023-12-20 12:53:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-20 12:53:13,310 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 12:53:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:53:13,345 INFO L225 Difference]: With dead ends: 47555 [2023-12-20 12:53:13,345 INFO L226 Difference]: Without dead ends: 41005 [2023-12-20 12:53:13,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22381 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=9415, Invalid=56377, Unknown=0, NotChecked=0, Total=65792 [2023-12-20 12:53:13,356 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 18634 mSDsluCounter, 30250 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18634 SdHoareTripleChecker+Valid, 31820 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:53:13,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18634 Valid, 31820 Invalid, 3293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [168 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 12:53:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41005 states. [2023-12-20 12:53:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41005 to 35087. [2023-12-20 12:53:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35087 states, 35085 states have (on average 1.2310389055151774) internal successors, (43191), 35086 states have internal predecessors, (43191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35087 states to 35087 states and 43191 transitions. [2023-12-20 12:53:17,898 INFO L78 Accepts]: Start accepts. Automaton has 35087 states and 43191 transitions. Word has length 100 [2023-12-20 12:53:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:53:17,898 INFO L495 AbstractCegarLoop]: Abstraction has 35087 states and 43191 transitions. [2023-12-20 12:53:17,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 35087 states and 43191 transitions. [2023-12-20 12:53:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:53:17,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:53:17,900 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:53:17,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 12:53:18,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 12:53:18,107 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:53:18,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:53:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash 977729156, now seen corresponding path program 1 times [2023-12-20 12:53:18,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:53:18,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488474336] [2023-12-20 12:53:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:53:18,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:53:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:53:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:53:19,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488474336] [2023-12-20 12:53:19,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488474336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:53:19,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862457475] [2023-12-20 12:53:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:53:19,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:53:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:53:19,105 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:53:19,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 12:53:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:53:19,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:53:19,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:53:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:21,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:53:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:25,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862457475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:53:25,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:53:25,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 21] total 60 [2023-12-20 12:53:25,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768412410] [2023-12-20 12:53:25,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:53:25,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:53:25,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:53:25,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:53:25,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3232, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:53:25,227 INFO L87 Difference]: Start difference. First operand 35087 states and 43191 transitions. Second operand has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 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) [2023-12-20 12:53:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:53:45,530 INFO L93 Difference]: Finished difference Result 54075 states and 65900 transitions. [2023-12-20 12:53:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-20 12:53:45,530 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 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 100 [2023-12-20 12:53:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:53:45,570 INFO L225 Difference]: With dead ends: 54075 [2023-12-20 12:53:45,570 INFO L226 Difference]: Without dead ends: 47879 [2023-12-20 12:53:45,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=4981, Invalid=26881, Unknown=0, NotChecked=0, Total=31862 [2023-12-20 12:53:45,579 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 21007 mSDsluCounter, 39233 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21007 SdHoareTripleChecker+Valid, 40798 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:53:45,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21007 Valid, 40798 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 12:53:45,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47879 states. [2023-12-20 12:53:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47879 to 34916. [2023-12-20 12:53:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34916 states, 34914 states have (on average 1.2312539382482672) internal successors, (42988), 34915 states have internal predecessors, (42988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34916 states to 34916 states and 42988 transitions. [2023-12-20 12:53:50,285 INFO L78 Accepts]: Start accepts. Automaton has 34916 states and 42988 transitions. Word has length 100 [2023-12-20 12:53:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:53:50,285 INFO L495 AbstractCegarLoop]: Abstraction has 34916 states and 42988 transitions. [2023-12-20 12:53:50,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 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) [2023-12-20 12:53:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 34916 states and 42988 transitions. [2023-12-20 12:53:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:53:50,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:53:50,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:53:50,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 12:53:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:53:50,490 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:53:50,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:53:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash -724713393, now seen corresponding path program 1 times [2023-12-20 12:53:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:53:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099144468] [2023-12-20 12:53:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:53:50,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:53:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:53:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:50,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:53:50,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099144468] [2023-12-20 12:53:50,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099144468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:53:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810176746] [2023-12-20 12:53:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:53:50,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:53:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:53:50,907 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:53:50,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 12:53:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:53:51,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:53:51,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:53:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:51,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:53:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:53,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810176746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:53:53,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:53:53,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-12-20 12:53:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734525864] [2023-12-20 12:53:53,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:53:53,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-20 12:53:53,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:53:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-20 12:53:53,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:53:53,170 INFO L87 Difference]: Start difference. First operand 34916 states and 42988 transitions. Second operand has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:54:09,143 INFO L93 Difference]: Finished difference Result 115557 states and 141453 transitions. [2023-12-20 12:54:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-20 12:54:09,143 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 12:54:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:54:09,227 INFO L225 Difference]: With dead ends: 115557 [2023-12-20 12:54:09,227 INFO L226 Difference]: Without dead ends: 86759 [2023-12-20 12:54:09,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2588, Invalid=10984, Unknown=0, NotChecked=0, Total=13572 [2023-12-20 12:54:09,242 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 27351 mSDsluCounter, 15283 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27351 SdHoareTripleChecker+Valid, 16845 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:54:09,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27351 Valid, 16845 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 12:54:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86759 states. [2023-12-20 12:54:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86759 to 46254. [2023-12-20 12:54:15,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46254 states, 46252 states have (on average 1.225049727579348) internal successors, (56661), 46253 states have internal predecessors, (56661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46254 states to 46254 states and 56661 transitions. [2023-12-20 12:54:15,825 INFO L78 Accepts]: Start accepts. Automaton has 46254 states and 56661 transitions. Word has length 101 [2023-12-20 12:54:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:54:15,825 INFO L495 AbstractCegarLoop]: Abstraction has 46254 states and 56661 transitions. [2023-12-20 12:54:15,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 46254 states and 56661 transitions. [2023-12-20 12:54:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:54:15,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:54:15,827 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:54:15,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 12:54:16,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:54:16,033 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:54:16,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:54:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1000926603, now seen corresponding path program 1 times [2023-12-20 12:54:16,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:54:16,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275166739] [2023-12-20 12:54:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:54:16,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:54:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:54:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:16,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:54:16,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275166739] [2023-12-20 12:54:16,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275166739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:54:16,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929328862] [2023-12-20 12:54:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:54:16,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:54:16,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:54:16,497 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:54:16,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 12:54:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:54:16,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:54:16,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:54:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:17,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:54:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 41 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:19,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929328862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:54:19,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:54:19,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2023-12-20 12:54:19,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844750608] [2023-12-20 12:54:19,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:54:19,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 12:54:19,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:54:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 12:54:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 12:54:19,155 INFO L87 Difference]: Start difference. First operand 46254 states and 56661 transitions. Second operand has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:54:35,791 INFO L93 Difference]: Finished difference Result 126207 states and 153798 transitions. [2023-12-20 12:54:35,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-20 12:54:35,791 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 12:54:35,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:54:35,885 INFO L225 Difference]: With dead ends: 126207 [2023-12-20 12:54:35,885 INFO L226 Difference]: Without dead ends: 97193 [2023-12-20 12:54:35,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2317, Invalid=9455, Unknown=0, NotChecked=0, Total=11772 [2023-12-20 12:54:35,903 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 21764 mSDsluCounter, 22552 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21764 SdHoareTripleChecker+Valid, 24118 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:54:35,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21764 Valid, 24118 Invalid, 1995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 12:54:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97193 states. [2023-12-20 12:54:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97193 to 62347. [2023-12-20 12:54:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62347 states, 62345 states have (on average 1.2208356724677198) internal successors, (76113), 62346 states have internal predecessors, (76113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62347 states to 62347 states and 76113 transitions. [2023-12-20 12:54:45,081 INFO L78 Accepts]: Start accepts. Automaton has 62347 states and 76113 transitions. Word has length 101 [2023-12-20 12:54:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:54:45,082 INFO L495 AbstractCegarLoop]: Abstraction has 62347 states and 76113 transitions. [2023-12-20 12:54:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 62347 states and 76113 transitions. [2023-12-20 12:54:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:54:45,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:54:45,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:54:45,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 12:54:45,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:54:45,292 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:54:45,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:54:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash 895693035, now seen corresponding path program 1 times [2023-12-20 12:54:45,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:54:45,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463348603] [2023-12-20 12:54:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:54:45,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:54:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:54:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:46,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:54:46,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463348603] [2023-12-20 12:54:46,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463348603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:54:46,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851219430] [2023-12-20 12:54:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:54:46,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:54:46,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:54:46,217 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:54:46,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 12:54:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:54:46,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:54:46,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:54:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:47,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:54:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 31 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:48,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851219430] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:54:48,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:54:48,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 15] total 46 [2023-12-20 12:54:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561170799] [2023-12-20 12:54:48,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:54:48,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 12:54:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:54:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 12:54:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 12:54:48,685 INFO L87 Difference]: Start difference. First operand 62347 states and 76113 transitions. Second operand has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:55:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:55:20,172 INFO L93 Difference]: Finished difference Result 138853 states and 168255 transitions. [2023-12-20 12:55:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-20 12:55:20,173 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 12:55:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:55:20,287 INFO L225 Difference]: With dead ends: 138853 [2023-12-20 12:55:20,287 INFO L226 Difference]: Without dead ends: 99735 [2023-12-20 12:55:20,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20962 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=9769, Invalid=44287, Unknown=0, NotChecked=0, Total=54056 [2023-12-20 12:55:20,322 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 24151 mSDsluCounter, 27922 mSDsCounter, 0 mSdLazyCounter, 3245 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24151 SdHoareTripleChecker+Valid, 29486 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:55:20,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24151 Valid, 29486 Invalid, 3388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 3245 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 12:55:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99735 states. [2023-12-20 12:55:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99735 to 60908. [2023-12-20 12:55:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60908 states, 60906 states have (on average 1.2209141956457492) internal successors, (74361), 60907 states have internal predecessors, (74361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:55:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60908 states to 60908 states and 74361 transitions. [2023-12-20 12:55:30,234 INFO L78 Accepts]: Start accepts. Automaton has 60908 states and 74361 transitions. Word has length 101 [2023-12-20 12:55:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:55:30,234 INFO L495 AbstractCegarLoop]: Abstraction has 60908 states and 74361 transitions. [2023-12-20 12:55:30,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:55:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 60908 states and 74361 transitions. [2023-12-20 12:55:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 12:55:30,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:55:30,235 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:55:30,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 12:55:30,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:55:30,436 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:55:30,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:55:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash 297369118, now seen corresponding path program 1 times [2023-12-20 12:55:30,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:55:30,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365699886] [2023-12-20 12:55:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:55:30,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:55:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:55:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:55:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:55:32,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365699886] [2023-12-20 12:55:32,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365699886] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:55:32,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715128654] [2023-12-20 12:55:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:55:32,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:55:32,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:55:32,451 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:55:32,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 12:55:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:55:32,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-20 12:55:32,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:55:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:55:35,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:55:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:55:43,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715128654] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:55:43,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:55:43,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 86 [2023-12-20 12:55:43,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118500261] [2023-12-20 12:55:43,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:55:43,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-20 12:55:43,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:55:43,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-20 12:55:43,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2023-12-20 12:55:43,027 INFO L87 Difference]: Start difference. First operand 60908 states and 74361 transitions. Second operand has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 12:58:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 335 states. [2023-12-20 12:58:51,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66495 ImplicationChecksByTransitivity, 186.9s TimeCoverageRelationStatistics Valid=23779, Invalid=146377, Unknown=0, NotChecked=0, Total=170156 [2023-12-20 12:58:51,824 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 8467 mSDsluCounter, 8044 mSDsCounter, 0 mSdLazyCounter, 6189 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8467 SdHoareTripleChecker+Valid, 8334 SdHoareTripleChecker+Invalid, 6570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 6189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:58:51,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8467 Valid, 8334 Invalid, 6570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 6189 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-20 12:58:51,828 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 12:58:51,836 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:58:51,836 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:58:51,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 12:58:52,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:58:52,043 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (60908states) and FLOYD_HOARE automaton (currently 335 states, 86 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-9-5-5-2-4-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-2-2-1 context. [2023-12-20 12:58:52,049 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 12:58:52,056 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:58:52,059 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 12:58:52,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:58:52 BoogieIcfgContainer [2023-12-20 12:58:52,062 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 12:58:52,067 INFO L158 Benchmark]: Toolchain (without parser) took 797840.76ms. Allocated memory was 328.2MB in the beginning and 3.8GB in the end (delta: 3.5GB). Free memory was 259.9MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-12-20 12:58:52,067 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 12:58:52,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1575.25ms. Allocated memory is still 328.2MB. Free memory was 259.9MB in the beginning and 216.1MB in the end (delta: 43.8MB). Peak memory consumption was 135.6MB. Max. memory is 8.0GB. [2023-12-20 12:58:52,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 379.67ms. Allocated memory was 328.2MB in the beginning and 466.6MB in the end (delta: 138.4MB). Free memory was 216.1MB in the beginning and 372.0MB in the end (delta: -155.9MB). Peak memory consumption was 69.0MB. Max. memory is 8.0GB. [2023-12-20 12:58:52,073 INFO L158 Benchmark]: Boogie Preprocessor took 480.08ms. Allocated memory is still 466.6MB. Free memory was 371.5MB in the beginning and 341.6MB in the end (delta: 29.9MB). Peak memory consumption was 105.9MB. Max. memory is 8.0GB. [2023-12-20 12:58:52,074 INFO L158 Benchmark]: RCFGBuilder took 3746.64ms. Allocated memory was 466.6MB in the beginning and 873.5MB in the end (delta: 406.8MB). Free memory was 341.1MB in the beginning and 500.5MB in the end (delta: -159.4MB). Peak memory consumption was 252.7MB. Max. memory is 8.0GB. [2023-12-20 12:58:52,074 INFO L158 Benchmark]: TraceAbstraction took 791650.22ms. Allocated memory was 873.5MB in the beginning and 3.8GB in the end (delta: 3.0GB). Free memory was 500.0MB in the beginning and 2.5GB in the end (delta: -2.0GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-20 12:58:52,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1575.25ms. Allocated memory is still 328.2MB. Free memory was 259.9MB in the beginning and 216.1MB in the end (delta: 43.8MB). Peak memory consumption was 135.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 379.67ms. Allocated memory was 328.2MB in the beginning and 466.6MB in the end (delta: 138.4MB). Free memory was 216.1MB in the beginning and 372.0MB in the end (delta: -155.9MB). Peak memory consumption was 69.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 480.08ms. Allocated memory is still 466.6MB. Free memory was 371.5MB in the beginning and 341.6MB in the end (delta: 29.9MB). Peak memory consumption was 105.9MB. Max. memory is 8.0GB. * RCFGBuilder took 3746.64ms. Allocated memory was 466.6MB in the beginning and 873.5MB in the end (delta: 406.8MB). Free memory was 341.1MB in the beginning and 500.5MB in the end (delta: -159.4MB). Peak memory consumption was 252.7MB. Max. memory is 8.0GB. * TraceAbstraction took 791650.22ms. Allocated memory was 873.5MB in the beginning and 3.8GB in the end (delta: 3.0GB). Free memory was 500.0MB in the beginning and 2.5GB in the end (delta: -2.0GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 295]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 295). Cancelled while NwaCegarLoop was constructing difference of abstraction (60908states) and FLOYD_HOARE automaton (currently 335 states, 86 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-9-5-5-2-4-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-2-2-1 context. - TimeoutResultAtElement [Line: 400]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 400). Cancelled while NwaCegarLoop was constructing difference of abstraction (60908states) and FLOYD_HOARE automaton (currently 335 states, 86 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-9-5-5-2-4-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 809 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 791.6s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 647.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 368778 SdHoareTripleChecker+Valid, 40.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368778 mSDsluCounter, 444199 SdHoareTripleChecker+Invalid, 36.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 394097 mSDsCounter, 3733 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49630 IncrementalHoareTripleChecker+Invalid, 53363 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3733 mSolverCounterUnsat, 50102 mSDtfsCounter, 49630 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6158 GetRequests, 2604 SyntacticMatches, 10 SemanticMatches, 3543 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410473 ImplicationChecksByTransitivity, 567.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62347occurred in iteration=32, InterpolantAutomatonStates: 2508, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 46.3s AutomataMinimizationTime, 33 MinimizatonAttempts, 185876 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 90.7s InterpolantComputationTime, 3710 NumberOfCodeBlocks, 3710 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 5185 ConstructedInterpolants, 0 QuantifiedInterpolants, 129305 SizeOfPredicates, 165 NumberOfNonLiveVariables, 6793 ConjunctsInSsa, 534 ConjunctsInUnsatCore, 70 InterpolantComputations, 16 PerfectInterpolantSequences, 1206/3417 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown