/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/Problem17_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:07:52,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:07:52,214 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 19:07:52,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:07:52,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:07:52,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:07:52,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:07:52,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:07:52,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:07:52,251 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:07:52,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:07:52,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:07:52,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:07:52,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:07:52,254 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:07:52,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:07:52,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:07:52,255 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:07:52,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:07:52,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:07:52,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:07:52,256 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:07:52,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:07:52,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:07:52,256 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:07:52,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:07:52,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:07:52,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:07:52,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:07:52,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:07:52,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:07:52,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:07:52,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:07:52,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:07:52,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:07:52,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:07:52,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:07:52,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:07:52,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:07:52,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:07:52,260 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:07:52,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:07:52,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:07:52,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:07:52,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:07:52,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:07:52,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:07:52,513 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:07:52,514 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:07:52,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label01.c [2023-12-15 19:07:53,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:07:54,094 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:07:54,095 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label01.c [2023-12-15 19:07:54,120 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77edc6399/edec1f0f5a794c77ae69d02032dc6249/FLAG3087f728b [2023-12-15 19:07:54,135 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77edc6399/edec1f0f5a794c77ae69d02032dc6249 [2023-12-15 19:07:54,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:07:54,138 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:07:54,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:07:54,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:07:54,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:07:54,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:07:54" (1/1) ... [2023-12-15 19:07:54,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e9a68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:54, skipping insertion in model container [2023-12-15 19:07:54,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:07:54" (1/1) ... [2023-12-15 19:07:54,235 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:07:54,457 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/Problem17_label01.c[6877,6890] [2023-12-15 19:07:54,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:07:54,972 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:07:55,004 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/Problem17_label01.c[6877,6890] [2023-12-15 19:07:55,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:07:55,314 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:07:55,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55 WrapperNode [2023-12-15 19:07:55,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:07:55,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:07:55,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:07:55,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:07:55,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:55,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:55,554 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-15 19:07:55,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:07:55,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:07:55,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:07:55,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:07:55,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:55,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:55,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:55,862 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 19:07:55,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:55,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:55,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:56,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:56,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:56,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:56,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:07:56,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:07:56,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:07:56,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:07:56,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (1/1) ... [2023-12-15 19:07:56,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:07:56,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:07:56,117 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 19:07:56,139 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 19:07:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:07:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:07:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:07:56,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:07:56,205 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:07:56,207 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:07:59,324 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:07:59,382 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:07:59,383 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:07:59,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:07:59 BoogieIcfgContainer [2023-12-15 19:07:59,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:07:59,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:07:59,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:07:59,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:07:59,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:07:54" (1/3) ... [2023-12-15 19:07:59,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719f8baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:07:59, skipping insertion in model container [2023-12-15 19:07:59,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:55" (2/3) ... [2023-12-15 19:07:59,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719f8baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:07:59, skipping insertion in model container [2023-12-15 19:07:59,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:07:59" (3/3) ... [2023-12-15 19:07:59,392 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label01.c [2023-12-15 19:07:59,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:07:59,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:07:59,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:07:59,469 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;@680c700e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:07:59,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:07:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 19:07:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 19:07:59,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:07:59,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:07:59,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:07:59,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:07:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2000105043, now seen corresponding path program 1 times [2023-12-15 19:07:59,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:07:59,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429996863] [2023-12-15 19:07:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:07:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:59,648 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 19:07:59,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:07:59,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429996863] [2023-12-15 19:07:59,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429996863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:07:59,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:07:59,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:07:59,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919309051] [2023-12-15 19:07:59,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:07:59,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:07:59,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:07:59,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:07:59,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:07:59,697 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:07:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:07:59,776 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-15 19:07:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:07:59,782 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-15 19:07:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:07:59,797 INFO L225 Difference]: With dead ends: 1055 [2023-12-15 19:07:59,797 INFO L226 Difference]: Without dead ends: 526 [2023-12-15 19:07:59,802 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 19:07:59,805 INFO L413 NwaCegarLoop]: 935 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, 935 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 19:07:59,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:07:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-15 19:07:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-15 19:07:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 19:07:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-15 19:07:59,911 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 45 [2023-12-15 19:07:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:07:59,911 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-15 19:07:59,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:07:59,912 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-15 19:07:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 19:07:59,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:07:59,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:07:59,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:07:59,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:07:59,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:07:59,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1551850062, now seen corresponding path program 1 times [2023-12-15 19:07:59,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:07:59,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666429103] [2023-12-15 19:07:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:59,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:07:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:00,142 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 19:08:00,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:00,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666429103] [2023-12-15 19:08:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666429103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:00,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:00,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350045096] [2023-12-15 19:08:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:00,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:00,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:00,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:00,146 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:02,454 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2023-12-15 19:08:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:02,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-15 19:08:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:02,460 INFO L225 Difference]: With dead ends: 1501 [2023-12-15 19:08:02,460 INFO L226 Difference]: Without dead ends: 976 [2023-12-15 19:08:02,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:02,462 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 426 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:02,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:08:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-15 19:08:02,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-15 19:08:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 19:08:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-15 19:08:02,503 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 45 [2023-12-15 19:08:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:02,504 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-15 19:08:02,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-15 19:08:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 19:08:02,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:02,511 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, 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] [2023-12-15 19:08:02,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:08:02,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:02,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:02,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1178648346, now seen corresponding path program 1 times [2023-12-15 19:08:02,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:02,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035517390] [2023-12-15 19:08:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:02,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035517390] [2023-12-15 19:08:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035517390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:02,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:02,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751822393] [2023-12-15 19:08:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:02,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:02,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:02,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:02,694 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:05,086 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2023-12-15 19:08:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:05,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-15 19:08:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:05,093 INFO L225 Difference]: With dead ends: 2812 [2023-12-15 19:08:05,093 INFO L226 Difference]: Without dead ends: 1843 [2023-12-15 19:08:05,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:05,096 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:05,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 19:08:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-15 19:08:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2023-12-15 19:08:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states 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 19:08:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2023-12-15 19:08:05,133 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 112 [2023-12-15 19:08:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:05,133 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2023-12-15 19:08:05,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:05,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2023-12-15 19:08:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 19:08:05,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:05,137 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, 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] [2023-12-15 19:08:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:08:05,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:05,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 762015358, now seen corresponding path program 1 times [2023-12-15 19:08:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947786762] [2023-12-15 19:08:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:05,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947786762] [2023-12-15 19:08:05,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947786762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:05,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:05,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391655171] [2023-12-15 19:08:05,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:05,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:05,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:08:05,461 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:08,982 INFO L93 Difference]: Finished difference Result 6764 states and 9257 transitions. [2023-12-15 19:08:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:08,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-15 19:08:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:09,004 INFO L225 Difference]: With dead ends: 6764 [2023-12-15 19:08:09,004 INFO L226 Difference]: Without dead ends: 4925 [2023-12-15 19:08:09,010 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 19:08:09,016 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 920 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:09,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 283 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-15 19:08:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2023-12-15 19:08:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4874. [2023-12-15 19:08:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 1.286476503180792) internal successors, (6269), 4873 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states 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 19:08:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6269 transitions. [2023-12-15 19:08:09,103 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6269 transitions. Word has length 115 [2023-12-15 19:08:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:09,104 INFO L495 AbstractCegarLoop]: Abstraction has 4874 states and 6269 transitions. [2023-12-15 19:08:09,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6269 transitions. [2023-12-15 19:08:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-15 19:08:09,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:09,111 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, 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] [2023-12-15 19:08:09,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:08:09,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:09,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1942059196, now seen corresponding path program 1 times [2023-12-15 19:08:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:09,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768516135] [2023-12-15 19:08:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-15 19:08:09,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:09,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768516135] [2023-12-15 19:08:09,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768516135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:09,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:09,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:09,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482103433] [2023-12-15 19:08:09,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:09,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:09,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:09,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:09,363 INFO L87 Difference]: Start difference. First operand 4874 states and 6269 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 19:08:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:11,234 INFO L93 Difference]: Finished difference Result 14435 states and 18540 transitions. [2023-12-15 19:08:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:11,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2023-12-15 19:08:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:11,266 INFO L225 Difference]: With dead ends: 14435 [2023-12-15 19:08:11,266 INFO L226 Difference]: Without dead ends: 8276 [2023-12-15 19:08:11,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:11,275 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:11,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 588 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:08:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2023-12-15 19:08:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6146. [2023-12-15 19:08:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 6145 states have (on average 1.1907241659886085) internal successors, (7317), 6145 states have internal predecessors, (7317), 0 states have call successors, (0), 0 states 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 19:08:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 7317 transitions. [2023-12-15 19:08:11,406 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 7317 transitions. Word has length 186 [2023-12-15 19:08:11,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:11,406 INFO L495 AbstractCegarLoop]: Abstraction has 6146 states and 7317 transitions. [2023-12-15 19:08:11,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 19:08:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 7317 transitions. [2023-12-15 19:08:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-15 19:08:11,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:11,411 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:11,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:08:11,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:11,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1731213872, now seen corresponding path program 1 times [2023-12-15 19:08:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:11,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194466749] [2023-12-15 19:08:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 19:08:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194466749] [2023-12-15 19:08:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194466749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:11,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:11,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170654540] [2023-12-15 19:08:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:11,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:11,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:11,614 INFO L87 Difference]: Start difference. First operand 6146 states and 7317 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 19:08:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:13,442 INFO L93 Difference]: Finished difference Result 15691 states and 18896 transitions. [2023-12-15 19:08:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:13,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-15 19:08:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:13,475 INFO L225 Difference]: With dead ends: 15691 [2023-12-15 19:08:13,475 INFO L226 Difference]: Without dead ends: 9546 [2023-12-15 19:08:13,484 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 19:08:13,485 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 413 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:13,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 475 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:08:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2023-12-15 19:08:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 6123. [2023-12-15 19:08:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6122 states have (on average 1.1894805619078732) internal successors, (7282), 6122 states have internal predecessors, (7282), 0 states have call successors, (0), 0 states 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 19:08:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 7282 transitions. [2023-12-15 19:08:13,606 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 7282 transitions. Word has length 199 [2023-12-15 19:08:13,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:13,606 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 7282 transitions. [2023-12-15 19:08:13,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 19:08:13,607 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 7282 transitions. [2023-12-15 19:08:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-15 19:08:13,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:13,609 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:13,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:08:13,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:13,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:13,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1028044277, now seen corresponding path program 1 times [2023-12-15 19:08:13,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:13,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86404211] [2023-12-15 19:08:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:14,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:14,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86404211] [2023-12-15 19:08:14,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86404211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:14,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:08:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19012225] [2023-12-15 19:08:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:14,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:08:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:08:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:08:14,009 INFO L87 Difference]: Start difference. First operand 6123 states and 7282 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 19:08:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:16,144 INFO L93 Difference]: Finished difference Result 16095 states and 19461 transitions. [2023-12-15 19:08:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:16,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2023-12-15 19:08:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:16,165 INFO L225 Difference]: With dead ends: 16095 [2023-12-15 19:08:16,166 INFO L226 Difference]: Without dead ends: 9973 [2023-12-15 19:08:16,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:08:16,175 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1637 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:16,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 803 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:08:16,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2023-12-15 19:08:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9955. [2023-12-15 19:08:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9954 states have (on average 1.1716897729555957) internal successors, (11663), 9954 states have internal predecessors, (11663), 0 states have call successors, (0), 0 states 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 19:08:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 11663 transitions. [2023-12-15 19:08:16,320 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 11663 transitions. Word has length 206 [2023-12-15 19:08:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:16,320 INFO L495 AbstractCegarLoop]: Abstraction has 9955 states and 11663 transitions. [2023-12-15 19:08:16,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 19:08:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 11663 transitions. [2023-12-15 19:08:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-15 19:08:16,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:16,324 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:16,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:08:16,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:16,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -922644452, now seen corresponding path program 1 times [2023-12-15 19:08:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960131451] [2023-12-15 19:08:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:16,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 226 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 19:08:16,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960131451] [2023-12-15 19:08:16,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960131451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:16,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019290862] [2023-12-15 19:08:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:16,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:08:16,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:08:16,712 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 19:08:16,721 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 19:08:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:16,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:08:16,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:08:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 226 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 19:08:17,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:08:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 19:08:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019290862] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:17,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:08:17,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-15 19:08:17,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767517628] [2023-12-15 19:08:17,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:17,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:17,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:17,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:17,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:08:17,376 INFO L87 Difference]: Start difference. First operand 9955 states and 11663 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 19:08:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:20,468 INFO L93 Difference]: Finished difference Result 30574 states and 36166 transitions. [2023-12-15 19:08:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2023-12-15 19:08:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:20,503 INFO L225 Difference]: With dead ends: 30574 [2023-12-15 19:08:20,503 INFO L226 Difference]: Without dead ends: 19762 [2023-12-15 19:08:20,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:08:20,519 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 889 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:20,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 159 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 19:08:20,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19762 states. [2023-12-15 19:08:20,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19762 to 19759. [2023-12-15 19:08:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19759 states, 19758 states have (on average 1.1599858285251543) internal successors, (22919), 19758 states have internal predecessors, (22919), 0 states have call successors, (0), 0 states 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 19:08:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19759 states to 19759 states and 22919 transitions. [2023-12-15 19:08:20,784 INFO L78 Accepts]: Start accepts. Automaton has 19759 states and 22919 transitions. Word has length 269 [2023-12-15 19:08:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:20,784 INFO L495 AbstractCegarLoop]: Abstraction has 19759 states and 22919 transitions. [2023-12-15 19:08:20,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 19:08:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 19759 states and 22919 transitions. [2023-12-15 19:08:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 19:08:20,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:20,789 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:20,800 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 19:08:20,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:08:20,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:20,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash 514472576, now seen corresponding path program 1 times [2023-12-15 19:08:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:20,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158681565] [2023-12-15 19:08:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:20,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-15 19:08:21,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158681565] [2023-12-15 19:08:21,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158681565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:21,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:21,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:21,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572716818] [2023-12-15 19:08:21,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:21,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:21,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:21,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:21,286 INFO L87 Difference]: Start difference. First operand 19759 states and 22919 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 19:08:23,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:23,310 INFO L93 Difference]: Finished difference Result 42908 states and 49988 transitions. [2023-12-15 19:08:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:23,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2023-12-15 19:08:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:23,352 INFO L225 Difference]: With dead ends: 42908 [2023-12-15 19:08:23,353 INFO L226 Difference]: Without dead ends: 23150 [2023-12-15 19:08:23,373 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 19:08:23,376 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 374 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:23,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 893 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:08:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23150 states. [2023-12-15 19:08:23,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23150 to 22724. [2023-12-15 19:08:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22724 states, 22723 states have (on average 1.1456233771949127) internal successors, (26032), 22723 states have internal predecessors, (26032), 0 states have call successors, (0), 0 states 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 19:08:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22724 states to 22724 states and 26032 transitions. [2023-12-15 19:08:23,652 INFO L78 Accepts]: Start accepts. Automaton has 22724 states and 26032 transitions. Word has length 282 [2023-12-15 19:08:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:23,653 INFO L495 AbstractCegarLoop]: Abstraction has 22724 states and 26032 transitions. [2023-12-15 19:08:23,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 19:08:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 22724 states and 26032 transitions. [2023-12-15 19:08:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 19:08:23,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:23,659 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, 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, 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] [2023-12-15 19:08:23,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:08:23,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:23,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:23,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1725216635, now seen corresponding path program 1 times [2023-12-15 19:08:23,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:23,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413747929] [2023-12-15 19:08:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:08:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413747929] [2023-12-15 19:08:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413747929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:08:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645330419] [2023-12-15 19:08:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:24,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:08:24,159 INFO L87 Difference]: Start difference. First operand 22724 states and 26032 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:27,417 INFO L93 Difference]: Finished difference Result 64238 states and 73654 transitions. [2023-12-15 19:08:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2023-12-15 19:08:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:27,489 INFO L225 Difference]: With dead ends: 64238 [2023-12-15 19:08:27,490 INFO L226 Difference]: Without dead ends: 38536 [2023-12-15 19:08:27,522 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 19:08:27,523 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 873 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:27,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 339 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 19:08:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38536 states. [2023-12-15 19:08:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38536 to 38055. [2023-12-15 19:08:28,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38055 states, 38054 states have (on average 1.1408787512482261) internal successors, (43415), 38054 states have internal predecessors, (43415), 0 states have call successors, (0), 0 states 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 19:08:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38055 states to 38055 states and 43415 transitions. [2023-12-15 19:08:28,055 INFO L78 Accepts]: Start accepts. Automaton has 38055 states and 43415 transitions. Word has length 305 [2023-12-15 19:08:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:28,055 INFO L495 AbstractCegarLoop]: Abstraction has 38055 states and 43415 transitions. [2023-12-15 19:08:28,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 38055 states and 43415 transitions. [2023-12-15 19:08:28,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-15 19:08:28,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:28,062 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, 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, 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] [2023-12-15 19:08:28,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:08:28,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:28,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:28,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1246574966, now seen corresponding path program 1 times [2023-12-15 19:08:28,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:28,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975542249] [2023-12-15 19:08:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:28,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-15 19:08:28,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:28,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975542249] [2023-12-15 19:08:28,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975542249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:28,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:28,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:28,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905084039] [2023-12-15 19:08:28,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:28,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:28,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:28,237 INFO L87 Difference]: Start difference. First operand 38055 states and 43415 transitions. Second operand has 3 states, 3 states have (on average 51.0) 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 19:08:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:30,131 INFO L93 Difference]: Finished difference Result 91843 states and 104583 transitions. [2023-12-15 19:08:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:30,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) 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 317 [2023-12-15 19:08:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:30,215 INFO L225 Difference]: With dead ends: 91843 [2023-12-15 19:08:30,215 INFO L226 Difference]: Without dead ends: 53357 [2023-12-15 19:08:30,249 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 19:08:30,250 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 423 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:30,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 429 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:08:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53357 states. [2023-12-15 19:08:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53357 to 49523. [2023-12-15 19:08:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49523 states, 49522 states have (on average 1.1243891603731675) internal successors, (55682), 49522 states have internal predecessors, (55682), 0 states have call successors, (0), 0 states 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 19:08:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49523 states to 49523 states and 55682 transitions. [2023-12-15 19:08:31,202 INFO L78 Accepts]: Start accepts. Automaton has 49523 states and 55682 transitions. Word has length 317 [2023-12-15 19:08:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:31,203 INFO L495 AbstractCegarLoop]: Abstraction has 49523 states and 55682 transitions. [2023-12-15 19:08:31,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) 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 19:08:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 49523 states and 55682 transitions. [2023-12-15 19:08:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-12-15 19:08:31,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:31,216 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, 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, 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] [2023-12-15 19:08:31,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:08:31,217 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:31,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash -588855338, now seen corresponding path program 1 times [2023-12-15 19:08:31,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:31,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356837637] [2023-12-15 19:08:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:31,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 19:08:31,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:31,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356837637] [2023-12-15 19:08:31,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356837637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:31,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:31,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:31,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199175696] [2023-12-15 19:08:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:31,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:31,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:31,451 INFO L87 Difference]: Start difference. First operand 49523 states and 55682 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 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 19:08:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:33,518 INFO L93 Difference]: Finished difference Result 114396 states and 129046 transitions. [2023-12-15 19:08:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:33,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 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 320 [2023-12-15 19:08:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:33,603 INFO L225 Difference]: With dead ends: 114396 [2023-12-15 19:08:33,603 INFO L226 Difference]: Without dead ends: 63172 [2023-12-15 19:08:33,648 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 19:08:33,649 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 364 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:33,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 813 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:08:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63172 states. [2023-12-15 19:08:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63172 to 61885. [2023-12-15 19:08:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61885 states, 61884 states have (on average 1.107410639260552) internal successors, (68531), 61884 states have internal predecessors, (68531), 0 states have call successors, (0), 0 states 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 19:08:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61885 states to 61885 states and 68531 transitions. [2023-12-15 19:08:34,491 INFO L78 Accepts]: Start accepts. Automaton has 61885 states and 68531 transitions. Word has length 320 [2023-12-15 19:08:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:34,491 INFO L495 AbstractCegarLoop]: Abstraction has 61885 states and 68531 transitions. [2023-12-15 19:08:34,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 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 19:08:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 61885 states and 68531 transitions. [2023-12-15 19:08:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-15 19:08:34,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:34,497 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:34,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 19:08:34,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:34,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1109823014, now seen corresponding path program 1 times [2023-12-15 19:08:34,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:34,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339218414] [2023-12-15 19:08:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 340 proven. 214 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 19:08:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339218414] [2023-12-15 19:08:35,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339218414] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301881969] [2023-12-15 19:08:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:35,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:08:35,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:08:35,062 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 19:08:35,068 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 19:08:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:35,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:08:35,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:08:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 367 proven. 73 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-15 19:08:35,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:08:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-15 19:08:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301881969] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:35,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:08:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2023-12-15 19:08:35,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349818208] [2023-12-15 19:08:35,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:35,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:35,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:08:35,619 INFO L87 Difference]: Start difference. First operand 61885 states and 68531 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:38,782 INFO L93 Difference]: Finished difference Result 144216 states and 159921 transitions. [2023-12-15 19:08:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:38,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2023-12-15 19:08:38,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:38,872 INFO L225 Difference]: With dead ends: 144216 [2023-12-15 19:08:38,872 INFO L226 Difference]: Without dead ends: 82332 [2023-12-15 19:08:38,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:08:38,916 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 849 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:38,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 186 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 19:08:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82332 states. [2023-12-15 19:08:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82332 to 77652. [2023-12-15 19:08:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77652 states, 77651 states have (on average 1.1105716603778444) internal successors, (86237), 77651 states have internal predecessors, (86237), 0 states have call successors, (0), 0 states 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 19:08:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77652 states to 77652 states and 86237 transitions. [2023-12-15 19:08:39,960 INFO L78 Accepts]: Start accepts. Automaton has 77652 states and 86237 transitions. Word has length 343 [2023-12-15 19:08:39,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:39,961 INFO L495 AbstractCegarLoop]: Abstraction has 77652 states and 86237 transitions. [2023-12-15 19:08:39,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:39,961 INFO L276 IsEmpty]: Start isEmpty. Operand 77652 states and 86237 transitions. [2023-12-15 19:08:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-15 19:08:39,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:39,968 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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:39,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:08:40,173 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,SelfDestructingSolverStorable12 [2023-12-15 19:08:40,173 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:40,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash -468157460, now seen corresponding path program 1 times [2023-12-15 19:08:40,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:40,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586253048] [2023-12-15 19:08:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:40,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-15 19:08:40,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586253048] [2023-12-15 19:08:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586253048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:40,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:40,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:40,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752746598] [2023-12-15 19:08:40,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:40,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:40,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:40,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:40,771 INFO L87 Difference]: Start difference. First operand 77652 states and 86237 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:42,760 INFO L93 Difference]: Finished difference Result 168919 states and 188109 transitions. [2023-12-15 19:08:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:42,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2023-12-15 19:08:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:42,854 INFO L225 Difference]: With dead ends: 168919 [2023-12-15 19:08:42,854 INFO L226 Difference]: Without dead ends: 90416 [2023-12-15 19:08:42,883 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 19:08:42,883 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 392 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:42,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 821 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:08:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90416 states. [2023-12-15 19:08:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90416 to 75490. [2023-12-15 19:08:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75490 states, 75489 states have (on average 1.1091947171111023) internal successors, (83732), 75489 states have internal predecessors, (83732), 0 states have call successors, (0), 0 states 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 19:08:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75490 states to 75490 states and 83732 transitions. [2023-12-15 19:08:44,101 INFO L78 Accepts]: Start accepts. Automaton has 75490 states and 83732 transitions. Word has length 373 [2023-12-15 19:08:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:44,101 INFO L495 AbstractCegarLoop]: Abstraction has 75490 states and 83732 transitions. [2023-12-15 19:08:44,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:44,102 INFO L276 IsEmpty]: Start isEmpty. Operand 75490 states and 83732 transitions. [2023-12-15 19:08:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-15 19:08:44,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:44,108 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:08:44,108 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:44,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1488693966, now seen corresponding path program 1 times [2023-12-15 19:08:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214076266] [2023-12-15 19:08:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:44,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-15 19:08:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:44,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214076266] [2023-12-15 19:08:44,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214076266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:44,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:44,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846309575] [2023-12-15 19:08:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:44,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:44,429 INFO L87 Difference]: Start difference. First operand 75490 states and 83732 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 19:08:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:46,223 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 19:08:46,224 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 447 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:46,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 221 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:08:46,225 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:08:46,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:08:46,226 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (75490states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (71986 states constructed, input type IntersectNwa). [2023-12-15 19:08:46,230 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:46,232 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:08:46,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:08:46 BoogieIcfgContainer [2023-12-15 19:08:46,234 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:08:46,234 INFO L158 Benchmark]: Toolchain (without parser) took 52095.62ms. Allocated memory was 250.6MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 188.4MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 19:08:46,234 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:08:46,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1175.61ms. Allocated memory is still 250.6MB. Free memory was 188.1MB in the beginning and 190.5MB in the end (delta: -2.4MB). Peak memory consumption was 79.0MB. Max. memory is 8.0GB. [2023-12-15 19:08:46,234 INFO L158 Benchmark]: Boogie Procedure Inliner took 328.16ms. Allocated memory is still 250.6MB. Free memory was 190.5MB in the beginning and 163.4MB in the end (delta: 27.1MB). Peak memory consumption was 97.9MB. Max. memory is 8.0GB. [2023-12-15 19:08:46,235 INFO L158 Benchmark]: Boogie Preprocessor took 443.28ms. Allocated memory was 250.6MB in the beginning and 437.3MB in the end (delta: 186.6MB). Free memory was 163.4MB in the beginning and 326.9MB in the end (delta: -163.6MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. [2023-12-15 19:08:46,235 INFO L158 Benchmark]: RCFGBuilder took 3293.40ms. Allocated memory was 437.3MB in the beginning and 680.5MB in the end (delta: 243.3MB). Free memory was 326.9MB in the beginning and 379.4MB in the end (delta: -52.4MB). Peak memory consumption was 191.9MB. Max. memory is 8.0GB. [2023-12-15 19:08:46,235 INFO L158 Benchmark]: TraceAbstraction took 46847.97ms. Allocated memory was 680.5MB in the beginning and 3.6GB in the end (delta: 2.9GB). Free memory was 378.8MB in the beginning and 2.5GB in the end (delta: -2.1GB). Peak memory consumption was 969.4MB. Max. memory is 8.0GB. [2023-12-15 19:08:46,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1175.61ms. Allocated memory is still 250.6MB. Free memory was 188.1MB in the beginning and 190.5MB in the end (delta: -2.4MB). Peak memory consumption was 79.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 328.16ms. Allocated memory is still 250.6MB. Free memory was 190.5MB in the beginning and 163.4MB in the end (delta: 27.1MB). Peak memory consumption was 97.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 443.28ms. Allocated memory was 250.6MB in the beginning and 437.3MB in the end (delta: 186.6MB). Free memory was 163.4MB in the beginning and 326.9MB in the end (delta: -163.6MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. * RCFGBuilder took 3293.40ms. Allocated memory was 437.3MB in the beginning and 680.5MB in the end (delta: 243.3MB). Free memory was 326.9MB in the beginning and 379.4MB in the end (delta: -52.4MB). Peak memory consumption was 191.9MB. Max. memory is 8.0GB. * TraceAbstraction took 46847.97ms. Allocated memory was 680.5MB in the beginning and 3.6GB in the end (delta: 2.9GB). Free memory was 378.8MB in the beginning and 2.5GB in the end (delta: -2.1GB). Peak memory consumption was 969.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 156). Cancelled while NwaCegarLoop was constructing difference of abstraction (75490states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (71986 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data [2023-12-15 19:08:46,241 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.8s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 34.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8798 SdHoareTripleChecker+Valid, 30.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8798 mSDsluCounter, 7970 SdHoareTripleChecker+Invalid, 25.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1003 mSDsCounter, 6149 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22836 IncrementalHoareTripleChecker+Invalid, 28985 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6149 mSolverCounterUnsat, 6967 mSDtfsCounter, 22836 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1265 GetRequests, 1240 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77652occurred in iteration=13, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 31268 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 4107 NumberOfCodeBlocks, 4107 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 4700 ConstructedInterpolants, 0 QuantifiedInterpolants, 11522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 884 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 5397/5824 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown