/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:57:48,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:57:49,037 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:57:49,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:57:49,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:57:49,066 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:57:49,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:57:49,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:57:49,067 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:57:49,070 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:57:49,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:57:49,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:57:49,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:57:49,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:57:49,072 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:57:49,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:57:49,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:57:49,073 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:57:49,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:57:49,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:57:49,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:57:49,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:57:49,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:57:49,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:57:49,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:57:49,075 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:57:49,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:57:49,076 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:57:49,076 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:57:49,076 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:57:49,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:57:49,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:57:49,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:57:49,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:57:49,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:57:49,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:57:49,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:57:49,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:57:49,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:57:49,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:57:49,079 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:57:49,079 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:57:49,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:57:49,079 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:57:49,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:57:49,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:57:49,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:57:49,302 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:57:49,303 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:57:49,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09.c [2023-12-15 18:57:50,407 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:57:50,628 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:57:50,629 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09.c [2023-12-15 18:57:50,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1d23d50f/13359f3c26a140c0a9c20717bed666bb/FLAGd60b07a1a [2023-12-15 18:57:50,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1d23d50f/13359f3c26a140c0a9c20717bed666bb [2023-12-15 18:57:50,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:57:50,654 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:57:50,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:57:50,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:57:50,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:57:50,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:57:50" (1/1) ... [2023-12-15 18:57:50,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb782bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:50, skipping insertion in model container [2023-12-15 18:57:50,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:57:50" (1/1) ... [2023-12-15 18:57:50,731 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:57:50,898 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09.c[4722,4735] [2023-12-15 18:57:51,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:57:51,057 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:57:51,077 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09.c[4722,4735] [2023-12-15 18:57:51,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:57:51,162 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:57:51,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51 WrapperNode [2023-12-15 18:57:51,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:57:51,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:57:51,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:57:51,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:57:51,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,241 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2023-12-15 18:57:51,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:57:51,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:57:51,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:57:51,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:57:51,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,283 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]. [2023-12-15 18:57:51,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:57:51,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:57:51,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:57:51,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:57:51,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (1/1) ... [2023-12-15 18:57:51,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:57:51,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:57:51,341 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) [2023-12-15 18:57:51,367 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 [2023-12-15 18:57:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:57:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:57:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:57:51,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:57:51,420 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:57:51,421 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:57:52,210 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:57:52,260 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:57:52,260 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:57:52,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:57:52 BoogieIcfgContainer [2023-12-15 18:57:52,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:57:52,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:57:52,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:57:52,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:57:52,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:57:50" (1/3) ... [2023-12-15 18:57:52,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b32de10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:57:52, skipping insertion in model container [2023-12-15 18:57:52,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:57:51" (2/3) ... [2023-12-15 18:57:52,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b32de10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:57:52, skipping insertion in model container [2023-12-15 18:57:52,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:57:52" (3/3) ... [2023-12-15 18:57:52,268 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label09.c [2023-12-15 18:57:52,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:57:52,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:57:52,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:57:52,331 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;@67462ddd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:57:52,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:57:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-15 18:57:52,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:52,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:52,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:52,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1349716483, now seen corresponding path program 1 times [2023-12-15 18:57:52,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:52,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364902637] [2023-12-15 18:57:52,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:52,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:57:52,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364902637] [2023-12-15 18:57:52,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364902637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:52,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:52,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:57:52,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613896395] [2023-12-15 18:57:52,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:57:52,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:57:52,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:57:52,546 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:52,597 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2023-12-15 18:57:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:57:52,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-15 18:57:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:52,611 INFO L225 Difference]: With dead ends: 365 [2023-12-15 18:57:52,611 INFO L226 Difference]: Without dead ends: 181 [2023-12-15 18:57:52,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:57:52,619 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:52,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:57:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-15 18:57:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-15 18:57:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2023-12-15 18:57:52,665 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 44 [2023-12-15 18:57:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:52,665 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2023-12-15 18:57:52,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2023-12-15 18:57:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-15 18:57:52,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:52,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:52,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:57:52,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:52,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:52,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1440141172, now seen corresponding path program 1 times [2023-12-15 18:57:52,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:52,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166088837] [2023-12-15 18:57:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:52,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:57:52,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:52,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166088837] [2023-12-15 18:57:52,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166088837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:52,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:52,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:52,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429192857] [2023-12-15 18:57:52,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:52,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:57:52,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:52,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:57:52,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:57:52,922 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:53,977 INFO L93 Difference]: Finished difference Result 717 states and 1175 transitions. [2023-12-15 18:57:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:57:53,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-15 18:57:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:53,981 INFO L225 Difference]: With dead ends: 717 [2023-12-15 18:57:53,981 INFO L226 Difference]: Without dead ends: 537 [2023-12-15 18:57:53,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:57:53,985 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 489 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:53,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 120 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:57:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-12-15 18:57:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2023-12-15 18:57:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 536 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 777 transitions. [2023-12-15 18:57:54,012 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 777 transitions. Word has length 44 [2023-12-15 18:57:54,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:54,012 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 777 transitions. [2023-12-15 18:57:54,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 777 transitions. [2023-12-15 18:57:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 18:57:54,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:54,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:54,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:57:54,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:54,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1603867943, now seen corresponding path program 1 times [2023-12-15 18:57:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:54,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165774531] [2023-12-15 18:57:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:54,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:57:54,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:54,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165774531] [2023-12-15 18:57:54,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165774531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:54,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:54,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:54,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775039591] [2023-12-15 18:57:54,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:54,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:57:54,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:54,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:57:54,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:57:54,205 INFO L87 Difference]: Start difference. First operand 537 states and 777 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:54,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:54,877 INFO L93 Difference]: Finished difference Result 1280 states and 1977 transitions. [2023-12-15 18:57:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:57:54,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-15 18:57:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:54,880 INFO L225 Difference]: With dead ends: 1280 [2023-12-15 18:57:54,880 INFO L226 Difference]: Without dead ends: 893 [2023-12-15 18:57:54,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:57:54,881 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 102 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:54,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 118 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:57:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-12-15 18:57:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 715. [2023-12-15 18:57:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.2212885154061626) internal successors, (872), 714 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 872 transitions. [2023-12-15 18:57:54,897 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 872 transitions. Word has length 124 [2023-12-15 18:57:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:54,902 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 872 transitions. [2023-12-15 18:57:54,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 872 transitions. [2023-12-15 18:57:54,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-15 18:57:54,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:54,915 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:57:54,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:54,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -55448227, now seen corresponding path program 1 times [2023-12-15 18:57:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:54,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938671995] [2023-12-15 18:57:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:54,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:57:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:55,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938671995] [2023-12-15 18:57:55,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938671995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:57:55,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255208082] [2023-12-15 18:57:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:55,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:57:55,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:57:55,295 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) [2023-12-15 18:57:55,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:57:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:55,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:57:55,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:57:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-15 18:57:55,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:57:55,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255208082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:55,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:57:55,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-15 18:57:55,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170858747] [2023-12-15 18:57:55,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:55,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:55,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:55,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:57:55,613 INFO L87 Difference]: Start difference. First operand 715 states and 872 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:56,037 INFO L93 Difference]: Finished difference Result 1607 states and 2070 transitions. [2023-12-15 18:57:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:56,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2023-12-15 18:57:56,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:56,043 INFO L225 Difference]: With dead ends: 1607 [2023-12-15 18:57:56,043 INFO L226 Difference]: Without dead ends: 1071 [2023-12-15 18:57:56,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:57:56,049 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 84 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:56,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 45 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:57:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-12-15 18:57:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-12-15 18:57:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.2158878504672896) internal successors, (1301), 1070 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1301 transitions. [2023-12-15 18:57:56,065 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1301 transitions. Word has length 215 [2023-12-15 18:57:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:56,066 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1301 transitions. [2023-12-15 18:57:56,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1301 transitions. [2023-12-15 18:57:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-15 18:57:56,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:56,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:56,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:57:56,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:57:56,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:56,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1623294726, now seen corresponding path program 1 times [2023-12-15 18:57:56,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:56,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895303794] [2023-12-15 18:57:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:57:56,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:56,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895303794] [2023-12-15 18:57:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895303794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:56,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:56,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241864838] [2023-12-15 18:57:56,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:56,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:56,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:56,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:56,472 INFO L87 Difference]: Start difference. First operand 1071 states and 1301 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:56,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:56,886 INFO L93 Difference]: Finished difference Result 2497 states and 3069 transitions. [2023-12-15 18:57:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2023-12-15 18:57:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:56,890 INFO L225 Difference]: With dead ends: 2497 [2023-12-15 18:57:56,891 INFO L226 Difference]: Without dead ends: 1605 [2023-12-15 18:57:56,891 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 [2023-12-15 18:57:56,892 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:56,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 75 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:57:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2023-12-15 18:57:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1605. [2023-12-15 18:57:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.1689526184538654) internal successors, (1875), 1604 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:56,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1875 transitions. [2023-12-15 18:57:56,908 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1875 transitions. Word has length 218 [2023-12-15 18:57:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:56,909 INFO L495 AbstractCegarLoop]: Abstraction has 1605 states and 1875 transitions. [2023-12-15 18:57:56,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:56,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1875 transitions. [2023-12-15 18:57:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-12-15 18:57:56,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:56,911 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:56,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:57:56,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:56,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash -245733428, now seen corresponding path program 1 times [2023-12-15 18:57:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:56,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991772779] [2023-12-15 18:57:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:56,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-15 18:57:57,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:57,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991772779] [2023-12-15 18:57:57,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991772779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:57,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:57,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:57,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349090301] [2023-12-15 18:57:57,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:57,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:57:57,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:57,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:57:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:57:57,163 INFO L87 Difference]: Start difference. First operand 1605 states and 1875 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:57,715 INFO L93 Difference]: Finished difference Result 3060 states and 3635 transitions. [2023-12-15 18:57:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:57:57,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2023-12-15 18:57:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:57,720 INFO L225 Difference]: With dead ends: 3060 [2023-12-15 18:57:57,720 INFO L226 Difference]: Without dead ends: 1783 [2023-12-15 18:57:57,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:57:57,722 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 141 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:57,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 14 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:57:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2023-12-15 18:57:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1605. [2023-12-15 18:57:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.119700748129676) internal successors, (1796), 1604 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1796 transitions. [2023-12-15 18:57:57,741 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1796 transitions. Word has length 335 [2023-12-15 18:57:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:57,742 INFO L495 AbstractCegarLoop]: Abstraction has 1605 states and 1796 transitions. [2023-12-15 18:57:57,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1796 transitions. [2023-12-15 18:57:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-15 18:57:57,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:57,745 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:57:57,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:57,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash -158798872, now seen corresponding path program 1 times [2023-12-15 18:57:57,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:57,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877807168] [2023-12-15 18:57:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:57,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-15 18:57:58,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877807168] [2023-12-15 18:57:58,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877807168] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:57:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037752697] [2023-12-15 18:57:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:58,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:57:58,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:57:58,157 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) [2023-12-15 18:57:58,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:57:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:58,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:57:58,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:57:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-15 18:57:58,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:57:58,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037752697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:58,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:57:58,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-15 18:57:58,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759146285] [2023-12-15 18:57:58,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:58,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:58,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:58,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:58,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:57:58,662 INFO L87 Difference]: Start difference. First operand 1605 states and 1796 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:59,022 INFO L93 Difference]: Finished difference Result 2319 states and 2565 transitions. [2023-12-15 18:57:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 424 [2023-12-15 18:57:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:59,028 INFO L225 Difference]: With dead ends: 2319 [2023-12-15 18:57:59,028 INFO L226 Difference]: Without dead ends: 2317 [2023-12-15 18:57:59,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:57:59,029 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:59,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:57:59,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2023-12-15 18:57:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 1427. [2023-12-15 18:57:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 1.0939691444600281) internal successors, (1560), 1426 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1560 transitions. [2023-12-15 18:57:59,049 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1560 transitions. Word has length 424 [2023-12-15 18:57:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:59,049 INFO L495 AbstractCegarLoop]: Abstraction has 1427 states and 1560 transitions. [2023-12-15 18:57:59,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1560 transitions. [2023-12-15 18:57:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-15 18:57:59,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:59,053 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-12-15 18:57:59,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:57:59,258 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,SelfDestructingSolverStorable6 [2023-12-15 18:57:59,258 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:59,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -655167302, now seen corresponding path program 1 times [2023-12-15 18:57:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:59,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47196413] [2023-12-15 18:57:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-15 18:57:59,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:59,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47196413] [2023-12-15 18:57:59,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47196413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:59,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:59,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:59,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621212524] [2023-12-15 18:57:59,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:59,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:59,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:59,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:59,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:59,569 INFO L87 Difference]: Start difference. First operand 1427 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:59,967 INFO L93 Difference]: Finished difference Result 3209 states and 3558 transitions. [2023-12-15 18:57:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:59,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 430 [2023-12-15 18:57:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:59,972 INFO L225 Difference]: With dead ends: 3209 [2023-12-15 18:57:59,972 INFO L226 Difference]: Without dead ends: 1961 [2023-12-15 18:57:59,974 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 [2023-12-15 18:57:59,974 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:59,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 242 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:57:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2023-12-15 18:57:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1605. [2023-12-15 18:57:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.0841645885286784) internal successors, (1739), 1604 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1739 transitions. [2023-12-15 18:57:59,998 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1739 transitions. Word has length 430 [2023-12-15 18:57:59,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:59,999 INFO L495 AbstractCegarLoop]: Abstraction has 1605 states and 1739 transitions. [2023-12-15 18:57:59,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1739 transitions. [2023-12-15 18:58:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-15 18:58:00,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:00,004 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:00,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:58:00,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:00,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -133056309, now seen corresponding path program 1 times [2023-12-15 18:58:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:00,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287761199] [2023-12-15 18:58:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-15 18:58:00,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:00,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287761199] [2023-12-15 18:58:00,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287761199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:00,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:00,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:58:00,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198871409] [2023-12-15 18:58:00,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:00,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:00,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:00,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:58:00,304 INFO L87 Difference]: Start difference. First operand 1605 states and 1739 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:00,703 INFO L93 Difference]: Finished difference Result 3743 states and 4120 transitions. [2023-12-15 18:58:00,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 437 [2023-12-15 18:58:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:00,709 INFO L225 Difference]: With dead ends: 3743 [2023-12-15 18:58:00,710 INFO L226 Difference]: Without dead ends: 2317 [2023-12-15 18:58:00,711 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 [2023-12-15 18:58:00,712 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 113 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:00,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 199 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:58:00,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2023-12-15 18:58:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2317. [2023-12-15 18:58:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2316 states have (on average 1.0885146804835923) internal successors, (2521), 2316 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2521 transitions. [2023-12-15 18:58:00,750 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2521 transitions. Word has length 437 [2023-12-15 18:58:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:00,750 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 2521 transitions. [2023-12-15 18:58:00,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2521 transitions. [2023-12-15 18:58:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-15 18:58:00,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:00,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:00,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:58:00,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:00,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash -214246886, now seen corresponding path program 1 times [2023-12-15 18:58:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789376729] [2023-12-15 18:58:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-15 18:58:00,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:00,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789376729] [2023-12-15 18:58:00,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789376729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:00,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:00,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:58:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617263944] [2023-12-15 18:58:00,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:00,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:00,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:58:00,932 INFO L87 Difference]: Start difference. First operand 2317 states and 2521 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:01,355 INFO L93 Difference]: Finished difference Result 5701 states and 6286 transitions. [2023-12-15 18:58:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 478 [2023-12-15 18:58:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:01,364 INFO L225 Difference]: With dead ends: 5701 [2023-12-15 18:58:01,364 INFO L226 Difference]: Without dead ends: 3563 [2023-12-15 18:58:01,366 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 [2023-12-15 18:58:01,367 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:01,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 50 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:58:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2023-12-15 18:58:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3207. [2023-12-15 18:58:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3206 states have (on average 1.0820336868371803) internal successors, (3469), 3206 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 3469 transitions. [2023-12-15 18:58:01,408 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 3469 transitions. Word has length 478 [2023-12-15 18:58:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:01,409 INFO L495 AbstractCegarLoop]: Abstraction has 3207 states and 3469 transitions. [2023-12-15 18:58:01,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 3469 transitions. [2023-12-15 18:58:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-15 18:58:01,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:01,414 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:01,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:58:01,414 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:01,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:01,415 INFO L85 PathProgramCache]: Analyzing trace with hash -510870478, now seen corresponding path program 1 times [2023-12-15 18:58:01,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:01,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979777019] [2023-12-15 18:58:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:01,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 1084 proven. 104 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-12-15 18:58:01,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:01,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979777019] [2023-12-15 18:58:01,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979777019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:01,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444031253] [2023-12-15 18:58:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:01,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:01,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:01,976 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) [2023-12-15 18:58:01,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:58:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:02,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:58:02,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2023-12-15 18:58:02,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:02,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444031253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:02,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:02,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 18:58:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329682025] [2023-12-15 18:58:02,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:58:02,192 INFO L87 Difference]: Start difference. First operand 3207 states and 3469 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:02,560 INFO L93 Difference]: Finished difference Result 4099 states and 4428 transitions. [2023-12-15 18:58:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:02,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 623 [2023-12-15 18:58:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:02,570 INFO L225 Difference]: With dead ends: 4099 [2023-12-15 18:58:02,570 INFO L226 Difference]: Without dead ends: 4097 [2023-12-15 18:58:02,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:58:02,572 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 156 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:02,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 9 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:58:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2023-12-15 18:58:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 3207. [2023-12-15 18:58:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3206 states have (on average 1.0820336868371803) internal successors, (3469), 3206 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 3469 transitions. [2023-12-15 18:58:02,615 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 3469 transitions. Word has length 623 [2023-12-15 18:58:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:02,616 INFO L495 AbstractCegarLoop]: Abstraction has 3207 states and 3469 transitions. [2023-12-15 18:58:02,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 3469 transitions. [2023-12-15 18:58:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-15 18:58:02,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:02,620 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:02,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:58:02,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:02,826 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:02,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 389974528, now seen corresponding path program 1 times [2023-12-15 18:58:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:02,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834268515] [2023-12-15 18:58:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:02,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-15 18:58:03,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834268515] [2023-12-15 18:58:03,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834268515] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074707721] [2023-12-15 18:58:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:03,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:03,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:03,168 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) [2023-12-15 18:58:03,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:58:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:03,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:58:03,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-15 18:58:03,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:58:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-15 18:58:03,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074707721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:58:03,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:58:03,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-15 18:58:03,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891502346] [2023-12-15 18:58:03,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:58:03,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:58:03,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:58:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:03,875 INFO L87 Difference]: Start difference. First operand 3207 states and 3469 transitions. Second operand has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:04,733 INFO L93 Difference]: Finished difference Result 7481 states and 8149 transitions. [2023-12-15 18:58:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:58:04,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 633 [2023-12-15 18:58:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:04,743 INFO L225 Difference]: With dead ends: 7481 [2023-12-15 18:58:04,744 INFO L226 Difference]: Without dead ends: 4453 [2023-12-15 18:58:04,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1268 GetRequests, 1264 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:04,747 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 196 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:04,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 59 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:58:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2023-12-15 18:58:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 3919. [2023-12-15 18:58:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3918 states have (on average 1.0811638591117918) internal successors, (4236), 3918 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 4236 transitions. [2023-12-15 18:58:04,796 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 4236 transitions. Word has length 633 [2023-12-15 18:58:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:04,796 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 4236 transitions. [2023-12-15 18:58:04,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:04,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 4236 transitions. [2023-12-15 18:58:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-15 18:58:04,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:04,801 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-12-15 18:58:04,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 18:58:05,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:05,007 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:05,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2004660329, now seen corresponding path program 1 times [2023-12-15 18:58:05,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:05,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638019724] [2023-12-15 18:58:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:05,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 1111 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2023-12-15 18:58:05,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:05,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638019724] [2023-12-15 18:58:05,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638019724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:05,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:05,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:58:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742188479] [2023-12-15 18:58:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:05,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:05,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:05,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:05,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:58:05,501 INFO L87 Difference]: Start difference. First operand 3919 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:05,942 INFO L93 Difference]: Finished difference Result 7837 states and 8486 transitions. [2023-12-15 18:58:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 643 [2023-12-15 18:58:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:05,952 INFO L225 Difference]: With dead ends: 7837 [2023-12-15 18:58:05,952 INFO L226 Difference]: Without dead ends: 4097 [2023-12-15 18:58:05,955 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 [2023-12-15 18:58:05,956 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:05,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 240 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:58:05,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2023-12-15 18:58:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 3741. [2023-12-15 18:58:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 1.0783422459893048) internal successors, (4033), 3740 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4033 transitions. [2023-12-15 18:58:06,000 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4033 transitions. Word has length 643 [2023-12-15 18:58:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:06,001 INFO L495 AbstractCegarLoop]: Abstraction has 3741 states and 4033 transitions. [2023-12-15 18:58:06,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:06,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4033 transitions. [2023-12-15 18:58:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-15 18:58:06,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:06,005 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:06,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:58:06,005 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:06,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash 772881503, now seen corresponding path program 1 times [2023-12-15 18:58:06,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:06,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272247148] [2023-12-15 18:58:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:06,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-12-15 18:58:06,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272247148] [2023-12-15 18:58:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272247148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:06,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:06,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:58:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888030026] [2023-12-15 18:58:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:06,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:58:06,263 INFO L87 Difference]: Start difference. First operand 3741 states and 4033 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:06,740 INFO L93 Difference]: Finished difference Result 8905 states and 9667 transitions. [2023-12-15 18:58:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:06,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 705 [2023-12-15 18:58:06,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:06,748 INFO L225 Difference]: With dead ends: 8905 [2023-12-15 18:58:06,748 INFO L226 Difference]: Without dead ends: 5343 [2023-12-15 18:58:06,751 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 [2023-12-15 18:58:06,752 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 109 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:06,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 35 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:58:06,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2023-12-15 18:58:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5165. [2023-12-15 18:58:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.0780402788536019) internal successors, (5567), 5164 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5567 transitions. [2023-12-15 18:58:06,807 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5567 transitions. Word has length 705 [2023-12-15 18:58:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:06,807 INFO L495 AbstractCegarLoop]: Abstraction has 5165 states and 5567 transitions. [2023-12-15 18:58:06,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5567 transitions. [2023-12-15 18:58:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-15 18:58:06,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:06,812 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:06,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:58:06,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:06,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:06,813 INFO L85 PathProgramCache]: Analyzing trace with hash 192544172, now seen corresponding path program 1 times [2023-12-15 18:58:06,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:06,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780447916] [2023-12-15 18:58:06,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:06,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1118 proven. 93 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-12-15 18:58:07,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780447916] [2023-12-15 18:58:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780447916] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632645146] [2023-12-15 18:58:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:07,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:07,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:07,306 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) [2023-12-15 18:58:07,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 18:58:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:07,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:58:07,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1211 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-12-15 18:58:07,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632645146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:07,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:07,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 18:58:07,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617322821] [2023-12-15 18:58:07,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:07,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:07,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:07,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:07,918 INFO L87 Difference]: Start difference. First operand 5165 states and 5567 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:08,282 INFO L93 Difference]: Finished difference Result 10507 states and 11328 transitions. [2023-12-15 18:58:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 723 [2023-12-15 18:58:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:08,290 INFO L225 Difference]: With dead ends: 10507 [2023-12-15 18:58:08,291 INFO L226 Difference]: Without dead ends: 5521 [2023-12-15 18:58:08,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:08,297 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:08,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 63 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:58:08,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2023-12-15 18:58:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 5343. [2023-12-15 18:58:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 5342 states have (on average 1.0776862598277799) internal successors, (5757), 5342 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 5757 transitions. [2023-12-15 18:58:08,354 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 5757 transitions. Word has length 723 [2023-12-15 18:58:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:08,355 INFO L495 AbstractCegarLoop]: Abstraction has 5343 states and 5757 transitions. [2023-12-15 18:58:08,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 5757 transitions. [2023-12-15 18:58:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-15 18:58:08,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:08,360 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:08,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 18:58:08,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 18:58:08,566 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:08,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash 527150511, now seen corresponding path program 1 times [2023-12-15 18:58:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:08,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458602471] [2023-12-15 18:58:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:08,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1716 backedges. 1036 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-12-15 18:58:09,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:09,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458602471] [2023-12-15 18:58:09,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458602471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:09,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:09,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:58:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350914893] [2023-12-15 18:58:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:09,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:09,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:58:09,071 INFO L87 Difference]: Start difference. First operand 5343 states and 5757 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:09,437 INFO L93 Difference]: Finished difference Result 10863 states and 11730 transitions. [2023-12-15 18:58:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:09,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 750 [2023-12-15 18:58:09,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:09,444 INFO L225 Difference]: With dead ends: 10863 [2023-12-15 18:58:09,445 INFO L226 Difference]: Without dead ends: 5699 [2023-12-15 18:58:09,449 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 [2023-12-15 18:58:09,449 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:09,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 224 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:58:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2023-12-15 18:58:09,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5699. [2023-12-15 18:58:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.07002457002457) internal successors, (6097), 5698 states have internal predecessors, (6097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 6097 transitions. [2023-12-15 18:58:09,508 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 6097 transitions. Word has length 750 [2023-12-15 18:58:09,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:09,508 INFO L495 AbstractCegarLoop]: Abstraction has 5699 states and 6097 transitions. [2023-12-15 18:58:09,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 6097 transitions. [2023-12-15 18:58:09,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2023-12-15 18:58:09,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:09,514 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:09,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:58:09,515 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:09,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:09,515 INFO L85 PathProgramCache]: Analyzing trace with hash 578775625, now seen corresponding path program 1 times [2023-12-15 18:58:09,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:09,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143416497] [2023-12-15 18:58:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:09,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1166 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-12-15 18:58:10,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:10,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143416497] [2023-12-15 18:58:10,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143416497] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:10,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276748962] [2023-12-15 18:58:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:10,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:10,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:10,474 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) [2023-12-15 18:58:10,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 18:58:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:10,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 18:58:10,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 879 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2023-12-15 18:58:10,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:10,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276748962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:10,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:10,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-12-15 18:58:10,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100611200] [2023-12-15 18:58:10,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:10,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:58:10,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:10,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:58:10,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:10,902 INFO L87 Difference]: Start difference. First operand 5699 states and 6097 transitions. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:11,556 INFO L93 Difference]: Finished difference Result 12643 states and 13547 transitions. [2023-12-15 18:58:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:58:11,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 800 [2023-12-15 18:58:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:11,565 INFO L225 Difference]: With dead ends: 12643 [2023-12-15 18:58:11,565 INFO L226 Difference]: Without dead ends: 7123 [2023-12-15 18:58:11,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 799 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:11,570 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:11,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 57 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:58:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2023-12-15 18:58:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 6767. [2023-12-15 18:58:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6767 states, 6766 states have (on average 1.0702039609813774) internal successors, (7241), 6766 states have internal predecessors, (7241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 7241 transitions. [2023-12-15 18:58:11,641 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 7241 transitions. Word has length 800 [2023-12-15 18:58:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:11,642 INFO L495 AbstractCegarLoop]: Abstraction has 6767 states and 7241 transitions. [2023-12-15 18:58:11,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 7241 transitions. [2023-12-15 18:58:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2023-12-15 18:58:11,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:11,652 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:11,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 18:58:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 18:58:11,859 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:11,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1761821475, now seen corresponding path program 1 times [2023-12-15 18:58:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144042025] [2023-12-15 18:58:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 683 proven. 114 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2023-12-15 18:58:12,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:12,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144042025] [2023-12-15 18:58:12,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144042025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:12,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964959948] [2023-12-15 18:58:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:12,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:12,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:12,591 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) [2023-12-15 18:58:12,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 18:58:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:12,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:58:12,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 797 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2023-12-15 18:58:12,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:12,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964959948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:12,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:12,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 18:58:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581442062] [2023-12-15 18:58:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:12,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:12,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:58:12,893 INFO L87 Difference]: Start difference. First operand 6767 states and 7241 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:13,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:13,298 INFO L93 Difference]: Finished difference Result 13711 states and 14662 transitions. [2023-12-15 18:58:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:13,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 802 [2023-12-15 18:58:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:13,307 INFO L225 Difference]: With dead ends: 13711 [2023-12-15 18:58:13,307 INFO L226 Difference]: Without dead ends: 7123 [2023-12-15 18:58:13,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:58:13,313 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 71 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:13,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 242 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:58:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2023-12-15 18:58:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 6411. [2023-12-15 18:58:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6410 states have (on average 1.062714508580343) internal successors, (6812), 6410 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 6812 transitions. [2023-12-15 18:58:13,381 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 6812 transitions. Word has length 802 [2023-12-15 18:58:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:13,381 INFO L495 AbstractCegarLoop]: Abstraction has 6411 states and 6812 transitions. [2023-12-15 18:58:13,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 6812 transitions. [2023-12-15 18:58:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2023-12-15 18:58:13,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:13,387 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:13,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 18:58:13,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:13,593 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:13,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:13,593 INFO L85 PathProgramCache]: Analyzing trace with hash 955592853, now seen corresponding path program 1 times [2023-12-15 18:58:13,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:13,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968143028] [2023-12-15 18:58:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2218 backedges. 1202 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-12-15 18:58:14,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:14,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968143028] [2023-12-15 18:58:14,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968143028] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:14,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516154485] [2023-12-15 18:58:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:14,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:14,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:14,534 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) [2023-12-15 18:58:14,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 18:58:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:14,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 18:58:14,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2218 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2023-12-15 18:58:14,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:14,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516154485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:14,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:14,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-12-15 18:58:14,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103636557] [2023-12-15 18:58:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:14,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:58:14,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:58:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:14,925 INFO L87 Difference]: Start difference. First operand 6411 states and 6812 transitions. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:15,537 INFO L93 Difference]: Finished difference Result 13355 states and 14189 transitions. [2023-12-15 18:58:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:58:15,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 833 [2023-12-15 18:58:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:15,549 INFO L225 Difference]: With dead ends: 13355 [2023-12-15 18:58:15,549 INFO L226 Difference]: Without dead ends: 7123 [2023-12-15 18:58:15,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 832 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:15,554 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 179 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:15,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 56 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:58:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2023-12-15 18:58:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 6411. [2023-12-15 18:58:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6410 states have (on average 1.062714508580343) internal successors, (6812), 6410 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 6812 transitions. [2023-12-15 18:58:15,622 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 6812 transitions. Word has length 833 [2023-12-15 18:58:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:15,622 INFO L495 AbstractCegarLoop]: Abstraction has 6411 states and 6812 transitions. [2023-12-15 18:58:15,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 6812 transitions. [2023-12-15 18:58:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2023-12-15 18:58:15,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:15,629 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:15,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 18:58:15,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:15,835 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:15,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:15,835 INFO L85 PathProgramCache]: Analyzing trace with hash 716510878, now seen corresponding path program 1 times [2023-12-15 18:58:15,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:15,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526008015] [2023-12-15 18:58:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:15,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 1203 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-12-15 18:58:17,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526008015] [2023-12-15 18:58:17,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526008015] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:17,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735642283] [2023-12-15 18:58:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:17,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:17,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:17,115 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) [2023-12-15 18:58:17,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 18:58:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:17,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 18:58:17,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 1305 proven. 523 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-12-15 18:58:19,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:58:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2023-12-15 18:58:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735642283] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:19,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 18:58:19,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 9 [2023-12-15 18:58:19,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111506311] [2023-12-15 18:58:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:19,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:58:19,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:58:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:58:19,739 INFO L87 Difference]: Start difference. First operand 6411 states and 6812 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:20,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:20,258 INFO L93 Difference]: Finished difference Result 13177 states and 14026 transitions. [2023-12-15 18:58:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:58:20,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 834 [2023-12-15 18:58:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:20,265 INFO L225 Difference]: With dead ends: 13177 [2023-12-15 18:58:20,265 INFO L226 Difference]: Without dead ends: 6945 [2023-12-15 18:58:20,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1664 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:58:20,270 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 187 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:20,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 8 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:58:20,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6945 states. [2023-12-15 18:58:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6945 to 6589. [2023-12-15 18:58:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6589 states, 6588 states have (on average 1.0634486945962356) internal successors, (7006), 6588 states have internal predecessors, (7006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6589 states to 6589 states and 7006 transitions. [2023-12-15 18:58:20,343 INFO L78 Accepts]: Start accepts. Automaton has 6589 states and 7006 transitions. Word has length 834 [2023-12-15 18:58:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:20,344 INFO L495 AbstractCegarLoop]: Abstraction has 6589 states and 7006 transitions. [2023-12-15 18:58:20,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6589 states and 7006 transitions. [2023-12-15 18:58:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2023-12-15 18:58:20,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:20,353 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:20,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 18:58:20,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:20,559 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:20,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:20,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1412622368, now seen corresponding path program 1 times [2023-12-15 18:58:20,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:20,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614971997] [2023-12-15 18:58:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:20,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 1432 proven. 0 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2023-12-15 18:58:21,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:21,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614971997] [2023-12-15 18:58:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614971997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:21,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:21,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:58:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921808907] [2023-12-15 18:58:21,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:21,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:21,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:21,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:21,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:58:21,071 INFO L87 Difference]: Start difference. First operand 6589 states and 7006 transitions. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:21,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:21,460 INFO L93 Difference]: Finished difference Result 12999 states and 13832 transitions. [2023-12-15 18:58:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:21,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 886 [2023-12-15 18:58:21,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:21,467 INFO L225 Difference]: With dead ends: 12999 [2023-12-15 18:58:21,467 INFO L226 Difference]: Without dead ends: 6589 [2023-12-15 18:58:21,472 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 [2023-12-15 18:58:21,473 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:21,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 223 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:58:21,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2023-12-15 18:58:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 6411. [2023-12-15 18:58:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6410 states have (on average 1.0586583463338533) internal successors, (6786), 6410 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 6786 transitions. [2023-12-15 18:58:21,578 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 6786 transitions. Word has length 886 [2023-12-15 18:58:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:21,579 INFO L495 AbstractCegarLoop]: Abstraction has 6411 states and 6786 transitions. [2023-12-15 18:58:21,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 6786 transitions. [2023-12-15 18:58:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2023-12-15 18:58:21,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:21,587 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:21,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:58:21,587 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:21,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:21,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1435989971, now seen corresponding path program 1 times [2023-12-15 18:58:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:21,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882927756] [2023-12-15 18:58:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 950 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2023-12-15 18:58:22,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882927756] [2023-12-15 18:58:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882927756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:22,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:22,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:58:22,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126191901] [2023-12-15 18:58:22,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:22,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:58:22,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:22,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:58:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:58:22,409 INFO L87 Difference]: Start difference. First operand 6411 states and 6786 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:23,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:23,078 INFO L93 Difference]: Finished difference Result 15669 states and 16670 transitions. [2023-12-15 18:58:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:58:23,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 960 [2023-12-15 18:58:23,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:23,087 INFO L225 Difference]: With dead ends: 15669 [2023-12-15 18:58:23,087 INFO L226 Difference]: Without dead ends: 9437 [2023-12-15 18:58:23,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:58:23,092 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 221 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:23,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 28 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:58:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2023-12-15 18:58:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 8191. [2023-12-15 18:58:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8191 states, 8190 states have (on average 1.069108669108669) internal successors, (8756), 8190 states have internal predecessors, (8756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8191 states to 8191 states and 8756 transitions. [2023-12-15 18:58:23,173 INFO L78 Accepts]: Start accepts. Automaton has 8191 states and 8756 transitions. Word has length 960 [2023-12-15 18:58:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:23,173 INFO L495 AbstractCegarLoop]: Abstraction has 8191 states and 8756 transitions. [2023-12-15 18:58:23,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8191 states and 8756 transitions. [2023-12-15 18:58:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2023-12-15 18:58:23,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:23,183 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:58:23,183 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:23,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1492286539, now seen corresponding path program 1 times [2023-12-15 18:58:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:23,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036104614] [2023-12-15 18:58:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 713 proven. 339 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2023-12-15 18:58:23,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:23,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036104614] [2023-12-15 18:58:23,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036104614] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:23,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018026985] [2023-12-15 18:58:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:23,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:23,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:23,803 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) [2023-12-15 18:58:23,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 18:58:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:24,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:58:24,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 1052 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2023-12-15 18:58:24,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:24,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018026985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:24,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:24,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 18:58:24,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385466524] [2023-12-15 18:58:24,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:24,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:24,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:24,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:24,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:24,209 INFO L87 Difference]: Start difference. First operand 8191 states and 8756 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:24,633 INFO L93 Difference]: Finished difference Result 16381 states and 17511 transitions. [2023-12-15 18:58:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:24,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 993 [2023-12-15 18:58:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:24,642 INFO L225 Difference]: With dead ends: 16381 [2023-12-15 18:58:24,643 INFO L226 Difference]: Without dead ends: 8369 [2023-12-15 18:58:24,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 992 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:24,649 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 36 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:24,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 241 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:58:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2023-12-15 18:58:24,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 7835. [2023-12-15 18:58:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7835 states, 7834 states have (on average 1.0545059994894053) internal successors, (8261), 7834 states have internal predecessors, (8261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7835 states to 7835 states and 8261 transitions. [2023-12-15 18:58:24,733 INFO L78 Accepts]: Start accepts. Automaton has 7835 states and 8261 transitions. Word has length 993 [2023-12-15 18:58:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:24,733 INFO L495 AbstractCegarLoop]: Abstraction has 7835 states and 8261 transitions. [2023-12-15 18:58:24,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states and 8261 transitions. [2023-12-15 18:58:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2023-12-15 18:58:24,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:24,744 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:24,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 18:58:24,950 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,SelfDestructingSolverStorable22 [2023-12-15 18:58:24,950 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:24,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash 8315408, now seen corresponding path program 1 times [2023-12-15 18:58:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:24,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216222274] [2023-12-15 18:58:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3693 backedges. 1719 proven. 0 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2023-12-15 18:58:25,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216222274] [2023-12-15 18:58:25,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216222274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:25,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:25,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:58:25,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510554288] [2023-12-15 18:58:25,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:25,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:58:25,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:58:25,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:58:25,565 INFO L87 Difference]: Start difference. First operand 7835 states and 8261 transitions. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:26,108 INFO L93 Difference]: Finished difference Result 14645 states and 15423 transitions. [2023-12-15 18:58:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:58:26,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1007 [2023-12-15 18:58:26,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:26,114 INFO L225 Difference]: With dead ends: 14645 [2023-12-15 18:58:26,114 INFO L226 Difference]: Without dead ends: 6718 [2023-12-15 18:58:26,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:58:26,118 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:26,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 23 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:58:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6718 states. [2023-12-15 18:58:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6718 to 6632. [2023-12-15 18:58:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6631 states have (on average 1.0455436585733675) internal successors, (6933), 6631 states have internal predecessors, (6933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 6933 transitions. [2023-12-15 18:58:26,182 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 6933 transitions. Word has length 1007 [2023-12-15 18:58:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:26,183 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 6933 transitions. [2023-12-15 18:58:26,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 6933 transitions. [2023-12-15 18:58:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2023-12-15 18:58:26,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:26,192 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:58:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:58:26,192 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:26,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:26,193 INFO L85 PathProgramCache]: Analyzing trace with hash -652247676, now seen corresponding path program 1 times [2023-12-15 18:58:26,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:26,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271128469] [2023-12-15 18:58:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3428 backedges. 1250 proven. 1577 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2023-12-15 18:58:27,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:27,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271128469] [2023-12-15 18:58:27,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271128469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:27,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839762471] [2023-12-15 18:58:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:27,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:27,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:27,337 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) [2023-12-15 18:58:27,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 18:58:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:27,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:58:27,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3428 backedges. 992 proven. 0 refuted. 0 times theorem prover too weak. 2436 trivial. 0 not checked. [2023-12-15 18:58:28,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:28,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839762471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:28,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:28,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:58:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122089716] [2023-12-15 18:58:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:28,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:28,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:58:28,252 INFO L87 Difference]: Start difference. First operand 6632 states and 6933 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:28,600 INFO L93 Difference]: Finished difference Result 14687 states and 15321 transitions. [2023-12-15 18:58:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1057 [2023-12-15 18:58:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:28,611 INFO L225 Difference]: With dead ends: 14687 [2023-12-15 18:58:28,611 INFO L226 Difference]: Without dead ends: 8234 [2023-12-15 18:58:28,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:58:28,615 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:28,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:58:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8234 states. [2023-12-15 18:58:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8234 to 6810. [2023-12-15 18:58:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6810 states, 6809 states have (on average 1.0449405199001323) internal successors, (7115), 6809 states have internal predecessors, (7115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6810 states to 6810 states and 7115 transitions. [2023-12-15 18:58:28,688 INFO L78 Accepts]: Start accepts. Automaton has 6810 states and 7115 transitions. Word has length 1057 [2023-12-15 18:58:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:28,689 INFO L495 AbstractCegarLoop]: Abstraction has 6810 states and 7115 transitions. [2023-12-15 18:58:28,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 6810 states and 7115 transitions. [2023-12-15 18:58:28,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1393 [2023-12-15 18:58:28,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:28,702 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:28,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 18:58:28,908 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,SelfDestructingSolverStorable24 [2023-12-15 18:58:28,909 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:28,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1476289790, now seen corresponding path program 1 times [2023-12-15 18:58:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:28,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373277062] [2023-12-15 18:58:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:28,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5988 backedges. 1412 proven. 0 refuted. 0 times theorem prover too weak. 4576 trivial. 0 not checked. [2023-12-15 18:58:29,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:29,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373277062] [2023-12-15 18:58:29,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373277062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:29,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:29,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:58:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992649614] [2023-12-15 18:58:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:29,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:58:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:58:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:58:29,724 INFO L87 Difference]: Start difference. First operand 6810 states and 7115 transitions. Second operand has 5 states, 5 states have (on average 66.2) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:30,496 INFO L93 Difference]: Finished difference Result 13465 states and 14074 transitions. [2023-12-15 18:58:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:58:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.2) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1392 [2023-12-15 18:58:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:30,502 INFO L225 Difference]: With dead ends: 13465 [2023-12-15 18:58:30,502 INFO L226 Difference]: Without dead ends: 6810 [2023-12-15 18:58:30,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:58:30,505 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 142 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:30,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 23 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:58:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2023-12-15 18:58:30,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 6810. [2023-12-15 18:58:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6810 states, 6809 states have (on average 1.0434718754589514) internal successors, (7105), 6809 states have internal predecessors, (7105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6810 states to 6810 states and 7105 transitions. [2023-12-15 18:58:30,583 INFO L78 Accepts]: Start accepts. Automaton has 6810 states and 7105 transitions. Word has length 1392 [2023-12-15 18:58:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:30,584 INFO L495 AbstractCegarLoop]: Abstraction has 6810 states and 7105 transitions. [2023-12-15 18:58:30,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.2) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 6810 states and 7105 transitions. [2023-12-15 18:58:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1511 [2023-12-15 18:58:30,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:30,605 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:58:30,605 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1673049168, now seen corresponding path program 1 times [2023-12-15 18:58:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260425473] [2023-12-15 18:58:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7218 backedges. 822 proven. 819 refuted. 0 times theorem prover too weak. 5577 trivial. 0 not checked. [2023-12-15 18:58:31,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:31,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260425473] [2023-12-15 18:58:31,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260425473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:31,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927206112] [2023-12-15 18:58:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:31,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:31,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:31,366 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) [2023-12-15 18:58:31,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 18:58:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:31,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:58:31,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7218 backedges. 1641 proven. 0 refuted. 0 times theorem prover too weak. 5577 trivial. 0 not checked. [2023-12-15 18:58:31,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927206112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:31,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 18:58:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611155425] [2023-12-15 18:58:31,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:31,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:31,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:31,818 INFO L87 Difference]: Start difference. First operand 6810 states and 7105 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:32,173 INFO L93 Difference]: Finished difference Result 14687 states and 15289 transitions. [2023-12-15 18:58:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1510 [2023-12-15 18:58:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:32,178 INFO L225 Difference]: With dead ends: 14687 [2023-12-15 18:58:32,178 INFO L226 Difference]: Without dead ends: 5208 [2023-12-15 18:58:32,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1513 GetRequests, 1509 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:58:32,183 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 71 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:32,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 230 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:58:32,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2023-12-15 18:58:32,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 4674. [2023-12-15 18:58:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4673 states have (on average 1.0295313503102932) internal successors, (4811), 4673 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 4811 transitions. [2023-12-15 18:58:32,222 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 4811 transitions. Word has length 1510 [2023-12-15 18:58:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:32,223 INFO L495 AbstractCegarLoop]: Abstraction has 4674 states and 4811 transitions. [2023-12-15 18:58:32,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 4811 transitions. [2023-12-15 18:58:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1754 [2023-12-15 18:58:32,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:32,242 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 9, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:32,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 18:58:32,449 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,SelfDestructingSolverStorable26 [2023-12-15 18:58:32,449 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:32,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:32,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1231872821, now seen corresponding path program 1 times [2023-12-15 18:58:32,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:32,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90206216] [2023-12-15 18:58:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:32,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9921 backedges. 3134 proven. 0 refuted. 0 times theorem prover too weak. 6787 trivial. 0 not checked. [2023-12-15 18:58:33,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:33,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90206216] [2023-12-15 18:58:33,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90206216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:33,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:58:33,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:58:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539879100] [2023-12-15 18:58:33,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:33,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:58:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:33,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:58:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:58:33,460 INFO L87 Difference]: Start difference. First operand 4674 states and 4811 transitions. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:33,834 INFO L93 Difference]: Finished difference Result 9191 states and 9466 transitions. [2023-12-15 18:58:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:58:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1753 [2023-12-15 18:58:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:33,838 INFO L225 Difference]: With dead ends: 9191 [2023-12-15 18:58:33,838 INFO L226 Difference]: Without dead ends: 4852 [2023-12-15 18:58:33,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:58:33,841 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:33,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 14 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:58:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4852 states. [2023-12-15 18:58:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 4674. [2023-12-15 18:58:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4673 states have (on average 1.0282473785576718) internal successors, (4805), 4673 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 4805 transitions. [2023-12-15 18:58:33,880 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 4805 transitions. Word has length 1753 [2023-12-15 18:58:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:33,881 INFO L495 AbstractCegarLoop]: Abstraction has 4674 states and 4805 transitions. [2023-12-15 18:58:33,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 4805 transitions. [2023-12-15 18:58:33,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1832 [2023-12-15 18:58:33,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:58:33,903 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:58:33,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 18:58:33,903 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:58:33,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:58:33,904 INFO L85 PathProgramCache]: Analyzing trace with hash 405120258, now seen corresponding path program 1 times [2023-12-15 18:58:33,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:58:33,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991496276] [2023-12-15 18:58:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:33,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:58:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11114 backedges. 6881 proven. 89 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2023-12-15 18:58:35,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:58:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991496276] [2023-12-15 18:58:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991496276] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:58:35,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795200046] [2023-12-15 18:58:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:58:35,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:58:35,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:58:35,034 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) [2023-12-15 18:58:35,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 18:58:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:58:35,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:58:35,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:58:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11114 backedges. 6236 proven. 0 refuted. 0 times theorem prover too weak. 4878 trivial. 0 not checked. [2023-12-15 18:58:36,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:58:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795200046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:58:36,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:58:36,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 18:58:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155179326] [2023-12-15 18:58:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:58:36,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:58:36,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:58:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:58:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:58:36,126 INFO L87 Difference]: Start difference. First operand 4674 states and 4805 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:58:36,446 INFO L93 Difference]: Finished difference Result 8768 states and 9016 transitions. [2023-12-15 18:58:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:58:36,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1831 [2023-12-15 18:58:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:58:36,447 INFO L225 Difference]: With dead ends: 8768 [2023-12-15 18:58:36,447 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 18:58:36,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1835 GetRequests, 1830 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:58:36,451 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:58:36,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 198 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:58:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 18:58:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 18:58:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 18:58:36,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1831 [2023-12-15 18:58:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:58:36,452 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 18:58:36,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:58:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 18:58:36,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 18:58:36,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:58:36,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 18:58:36,662 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 [2023-12-15 18:58:36,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 18:58:38,263 INFO L899 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2023-12-15 18:58:38,263 INFO L899 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2023-12-15 18:58:38,264 INFO L899 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2023-12-15 18:58:38,265 INFO L899 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2023-12-15 18:58:38,266 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,267 INFO L899 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 149) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2023-12-15 18:58:38,268 INFO L899 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,269 INFO L899 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,270 INFO L899 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L884(lines 884 900) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,271 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L895 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse2 (<= (+ 49 ~a12~0) 0)) (.cse7 (= ~a21~0 9)) (.cse5 (= ~a21~0 8)) (.cse8 (<= ~a12~0 11)) (.cse10 (<= ~a15~0 8)) (.cse11 (<= ~a21~0 6)) (.cse13 (= ~a21~0 6)) (.cse1 (= 7 ~a21~0)) (.cse6 (<= 9 ~a15~0)) (.cse4 (<= 0 (+ ~a12~0 42))) (.cse12 (<= 6 ~a15~0)) (.cse0 (= ~a24~0 1)) (.cse3 (<= ~a15~0 7)) (.cse9 (<= (div (+ (- 562768) (div (* ~a12~0 9) 10)) 5) 11))) (or (and .cse0 .cse1 .cse2 (= ~a15~0 8)) (and .cse0 .cse1 (<= ~a12~0 76) .cse3 .cse4) (and .cse5 .cse0 .cse6 (<= (+ ~a12~0 355062) 0)) (and (<= ~a12~0 80) .cse0 .cse7 .cse4) (and .cse8 .cse0 .cse4) (and .cse0 .cse6 .cse7 .cse4 .cse9) (and .cse5 .cse0 .cse3 .cse9) (and .cse0 .cse10 .cse7 .cse2) (and .cse0 .cse7 .cse3 .cse9) (and .cse5 (<= ~a12~0 73282) .cse0 .cse4) (and .cse0 (<= 10 ~a21~0) .cse9) (and .cse5 .cse0 .cse6 .cse4 .cse9) (and .cse8 .cse11 .cse3) (and .cse0 (or (and .cse12 .cse10) (and .cse10 (not .cse13))) .cse11 .cse4 .cse9) (and .cse0 (= 5 ~a15~0) .cse13 (<= 526013 ~a12~0) .cse9) (and .cse0 .cse6 .cse1 .cse4 .cse9) (and .cse0 .cse6 .cse4 (<= ~a12~0 225871)) (and .cse12 .cse0 .cse3 .cse9))) [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2023-12-15 18:58:38,272 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2023-12-15 18:58:38,274 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] [2023-12-15 18:58:38,276 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:58:38,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:58:38 BoogieIcfgContainer [2023-12-15 18:58:38,288 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:58:38,288 INFO L158 Benchmark]: Toolchain (without parser) took 47634.11ms. Allocated memory was 346.0MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 291.5MB in the beginning and 1.1GB in the end (delta: -830.4MB). Peak memory consumption was 806.8MB. Max. memory is 8.0GB. [2023-12-15 18:58:38,288 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 187.7MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:58:38,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.21ms. Allocated memory is still 346.0MB. Free memory was 291.4MB in the beginning and 257.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-15 18:58:38,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.84ms. Allocated memory is still 346.0MB. Free memory was 257.8MB in the beginning and 247.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 18:58:38,289 INFO L158 Benchmark]: Boogie Preprocessor took 74.61ms. Allocated memory is still 346.0MB. Free memory was 247.9MB in the beginning and 235.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 18:58:38,289 INFO L158 Benchmark]: RCFGBuilder took 943.23ms. Allocated memory is still 346.0MB. Free memory was 234.8MB in the beginning and 206.1MB in the end (delta: 28.7MB). Peak memory consumption was 29.7MB. Max. memory is 8.0GB. [2023-12-15 18:58:38,289 INFO L158 Benchmark]: TraceAbstraction took 46025.60ms. Allocated memory was 346.0MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 205.6MB in the beginning and 1.1GB in the end (delta: -916.3MB). Peak memory consumption was 719.5MB. Max. memory is 8.0GB. [2023-12-15 18:58:38,290 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 187.7MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 509.21ms. Allocated memory is still 346.0MB. Free memory was 291.4MB in the beginning and 257.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.84ms. Allocated memory is still 346.0MB. Free memory was 257.8MB in the beginning and 247.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.61ms. Allocated memory is still 346.0MB. Free memory was 247.9MB in the beginning and 235.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 943.23ms. Allocated memory is still 346.0MB. Free memory was 234.8MB in the beginning and 206.1MB in the end (delta: 28.7MB). Peak memory consumption was 29.7MB. Max. memory is 8.0GB. * TraceAbstraction took 46025.60ms. Allocated memory was 346.0MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 205.6MB in the beginning and 1.1GB in the end (delta: -916.3MB). Peak memory consumption was 719.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 149]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.0s, OverallIterations: 29, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3013 SdHoareTripleChecker+Valid, 12.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3013 mSDsluCounter, 3190 SdHoareTripleChecker+Invalid, 10.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 166 mSDsCounter, 1516 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16811 IncrementalHoareTripleChecker+Invalid, 18327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1516 mSolverCounterUnsat, 3024 mSDtfsCounter, 16811 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12845 GetRequests, 12757 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8191occurred in iteration=22, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 29 MinimizatonAttempts, 10410 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 51 NumberOfFragments, 353 HoareAnnotationTreeSize, 1 FormulaSimplifications, 30967 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 1 FormulaSimplificationsInter, 2409 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 20.6s InterpolantComputationTime, 32762 NumberOfCodeBlocks, 32762 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 34185 ConstructedInterpolants, 43 QuantifiedInterpolants, 107108 SizeOfPredicates, 1 NumberOfNonLiveVariables, 13904 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 44 InterpolantComputations, 28 PerfectInterpolantSequences, 107918/112329 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((((((((((a24 == 1) && (7 == a21)) && ((49 + a12) <= 0)) && (a15 == 8)) || (((((a24 == 1) && (7 == a21)) && (a12 <= 76)) && (a15 <= 7)) && (0 <= (a12 + 42)))) || ((((a21 == 8) && (a24 == 1)) && (9 <= a15)) && ((a12 + 355062) <= 0))) || ((((a12 <= 80) && (a24 == 1)) && (a21 == 9)) && (0 <= (a12 + 42)))) || (((a12 <= 11) && (a24 == 1)) && (0 <= (a12 + 42)))) || (((((a24 == 1) && (9 <= a15)) && (a21 == 9)) && (0 <= (a12 + 42))) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) || ((((a21 == 8) && (a24 == 1)) && (a15 <= 7)) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) || ((((a24 == 1) && (a15 <= 8)) && (a21 == 9)) && ((49 + a12) <= 0))) || ((((a24 == 1) && (a21 == 9)) && (a15 <= 7)) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) || ((((a21 == 8) && (a12 <= 73282)) && (a24 == 1)) && (0 <= (a12 + 42)))) || (((a24 == 1) && (10 <= a21)) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) || (((((a21 == 8) && (a24 == 1)) && (9 <= a15)) && (0 <= (a12 + 42))) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) || (((a12 <= 11) && (a21 <= 6)) && (a15 <= 7))) || (((((a24 == 1) && (((6 <= a15) && (a15 <= 8)) || ((a15 <= 8) && !((a21 == 6))))) && (a21 <= 6)) && (0 <= (a12 + 42))) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) || (((((a24 == 1) && (5 == a15)) && (a21 == 6)) && (526013 <= a12)) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) || (((((a24 == 1) && (9 <= a15)) && (7 == a21)) && (0 <= (a12 + 42))) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) || ((((a24 == 1) && (9 <= a15)) && (0 <= (a12 + 42))) && (a12 <= 225871))) || ((((6 <= a15) && (a24 == 1)) && (a15 <= 7)) && (((-562768 + ((a12 * 9) / 10)) / 5) <= 11))) RESULT: Ultimate proved your program to be correct! [2023-12-15 18:58:38,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...