/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 00:38:11,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 00:38:11,386 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 00:38:11,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 00:38:11,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 00:38:11,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 00:38:11,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 00:38:11,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 00:38:11,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 00:38:11,417 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 00:38:11,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 00:38:11,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 00:38:11,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 00:38:11,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 00:38:11,420 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 00:38:11,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 00:38:11,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 00:38:11,421 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 00:38:11,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 00:38:11,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 00:38:11,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 00:38:11,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 00:38:11,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 00:38:11,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 00:38:11,423 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 00:38:11,423 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 00:38:11,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 00:38:11,424 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 00:38:11,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 00:38:11,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 00:38:11,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 00:38:11,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 00:38:11,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 00:38:11,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 00:38:11,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 00:38:11,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 00:38:11,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 00:38:11,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 00:38:11,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 00:38:11,427 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 00:38:11,427 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 00:38:11,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 00:38:11,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 00:38:11,427 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 00:38:11,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 00:38:11,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 00:38:11,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 00:38:11,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 00:38:11,692 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 00:38:11,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-27.i [2023-12-21 00:38:12,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 00:38:13,225 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 00:38:13,226 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-27.i [2023-12-21 00:38:13,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603d2e375/f9b9012206c641eaa05b6adc915e6481/FLAG0f5c1c40c [2023-12-21 00:38:13,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603d2e375/f9b9012206c641eaa05b6adc915e6481 [2023-12-21 00:38:13,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 00:38:13,252 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 00:38:13,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 00:38:13,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 00:38:13,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 00:38:13,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:13,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d1df42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13, skipping insertion in model container [2023-12-21 00:38:13,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:13,323 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 00:38:13,455 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-27.i[916,929] [2023-12-21 00:38:13,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 00:38:13,693 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 00:38:13,704 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-27.i[916,929] [2023-12-21 00:38:13,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 00:38:13,856 INFO L206 MainTranslator]: Completed translation [2023-12-21 00:38:13,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13 WrapperNode [2023-12-21 00:38:13,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 00:38:13,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 00:38:13,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 00:38:13,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 00:38:13,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:13,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:13,969 INFO L138 Inliner]: procedures = 26, calls = 103, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 700 [2023-12-21 00:38:13,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 00:38:13,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 00:38:13,970 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 00:38:13,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 00:38:13,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:13,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:13,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:14,048 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 00:38:14,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:14,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:14,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:14,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:14,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:14,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:14,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 00:38:14,115 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 00:38:14,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 00:38:14,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 00:38:14,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (1/1) ... [2023-12-21 00:38:14,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 00:38:14,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:14,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 00:38:14,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 00:38:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 00:38:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 00:38:14,181 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 00:38:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 00:38:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 00:38:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 00:38:14,334 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 00:38:14,335 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 00:38:15,279 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 00:38:15,336 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 00:38:15,336 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 00:38:15,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:38:15 BoogieIcfgContainer [2023-12-21 00:38:15,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 00:38:15,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 00:38:15,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 00:38:15,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 00:38:15,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:38:13" (1/3) ... [2023-12-21 00:38:15,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4c53fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:38:15, skipping insertion in model container [2023-12-21 00:38:15,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:38:13" (2/3) ... [2023-12-21 00:38:15,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4c53fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:38:15, skipping insertion in model container [2023-12-21 00:38:15,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:38:15" (3/3) ... [2023-12-21 00:38:15,344 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-27.i [2023-12-21 00:38:15,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 00:38:15,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 00:38:15,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 00:38:15,408 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;@4e4768c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 00:38:15,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 00:38:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 174 states have (on average 1.5229885057471264) internal successors, (265), 175 states have internal predecessors, (265), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-21 00:38:15,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-12-21 00:38:15,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:15,443 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:15,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:15,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash 874702923, now seen corresponding path program 1 times [2023-12-21 00:38:15,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:15,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872155046] [2023-12-21 00:38:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:15,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:15,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872155046] [2023-12-21 00:38:15,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 00:38:15,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360060003] [2023-12-21 00:38:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:15,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:15,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:15,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:15,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 00:38:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:16,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 00:38:16,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 15842 trivial. 0 not checked. [2023-12-21 00:38:16,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:38:16,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360060003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:38:16,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:38:16,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 00:38:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106828888] [2023-12-21 00:38:16,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:38:16,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 00:38:16,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 00:38:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 00:38:16,515 INFO L87 Difference]: Start difference. First operand has 267 states, 174 states have (on average 1.5229885057471264) internal successors, (265), 175 states have internal predecessors, (265), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-21 00:38:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:16,630 INFO L93 Difference]: Finished difference Result 531 states and 978 transitions. [2023-12-21 00:38:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 00:38:16,634 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) Word has length 582 [2023-12-21 00:38:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:16,648 INFO L225 Difference]: With dead ends: 531 [2023-12-21 00:38:16,648 INFO L226 Difference]: Without dead ends: 265 [2023-12-21 00:38:16,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 00:38:16,655 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:16,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 437 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:38:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-21 00:38:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-21 00:38:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 173 states have (on average 1.5028901734104045) internal successors, (260), 173 states have internal predecessors, (260), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-21 00:38:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 440 transitions. [2023-12-21 00:38:16,749 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 440 transitions. Word has length 582 [2023-12-21 00:38:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:16,750 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 440 transitions. [2023-12-21 00:38:16,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-21 00:38:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 440 transitions. [2023-12-21 00:38:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-12-21 00:38:16,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:16,768 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:16,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:16,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 00:38:16,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:16,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1673041021, now seen corresponding path program 1 times [2023-12-21 00:38:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709399853] [2023-12-21 00:38:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:17,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:17,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579351186] [2023-12-21 00:38:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:17,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:17,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:17,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 00:38:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:17,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 00:38:17,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-21 00:38:17,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:38:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709399853] [2023-12-21 00:38:17,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579351186] [2023-12-21 00:38:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579351186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:38:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:38:17,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:38:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249936800] [2023-12-21 00:38:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:38:17,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:38:17,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:38:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:38:17,661 INFO L87 Difference]: Start difference. First operand 265 states and 440 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:17,769 INFO L93 Difference]: Finished difference Result 787 states and 1307 transitions. [2023-12-21 00:38:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:38:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 582 [2023-12-21 00:38:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:17,779 INFO L225 Difference]: With dead ends: 787 [2023-12-21 00:38:17,779 INFO L226 Difference]: Without dead ends: 523 [2023-12-21 00:38:17,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:38:17,783 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 414 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:17,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 963 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:38:17,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-21 00:38:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 300. [2023-12-21 00:38:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 208 states have (on average 1.5432692307692308) internal successors, (321), 208 states have internal predecessors, (321), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-21 00:38:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 501 transitions. [2023-12-21 00:38:17,819 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 501 transitions. Word has length 582 [2023-12-21 00:38:17,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:17,822 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 501 transitions. [2023-12-21 00:38:17,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:17,822 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 501 transitions. [2023-12-21 00:38:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-12-21 00:38:17,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:17,853 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:17,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:18,076 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,SelfDestructingSolverStorable1 [2023-12-21 00:38:18,076 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:18,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1235140865, now seen corresponding path program 1 times [2023-12-21 00:38:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228099702] [2023-12-21 00:38:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:18,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:18,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241024300] [2023-12-21 00:38:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:18,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:18,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:18,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:18,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 00:38:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:18,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 00:38:18,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-21 00:38:18,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:38:18,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228099702] [2023-12-21 00:38:18,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241024300] [2023-12-21 00:38:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241024300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:38:18,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:38:18,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:38:18,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984860647] [2023-12-21 00:38:18,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:38:18,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:38:18,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:38:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:38:18,690 INFO L87 Difference]: Start difference. First operand 300 states and 501 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:18,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:18,825 INFO L93 Difference]: Finished difference Result 766 states and 1282 transitions. [2023-12-21 00:38:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:38:18,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 582 [2023-12-21 00:38:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:18,832 INFO L225 Difference]: With dead ends: 766 [2023-12-21 00:38:18,832 INFO L226 Difference]: Without dead ends: 467 [2023-12-21 00:38:18,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:38:18,835 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 208 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:18,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 912 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 00:38:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-21 00:38:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 464. [2023-12-21 00:38:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 343 states have (on average 1.565597667638484) internal successors, (537), 344 states have internal predecessors, (537), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-21 00:38:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 773 transitions. [2023-12-21 00:38:18,881 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 773 transitions. Word has length 582 [2023-12-21 00:38:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:18,882 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 773 transitions. [2023-12-21 00:38:18,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 773 transitions. [2023-12-21 00:38:18,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-21 00:38:18,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:18,887 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:18,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:19,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:19,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:19,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1385633724, now seen corresponding path program 1 times [2023-12-21 00:38:19,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:19,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401825837] [2023-12-21 00:38:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:19,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:19,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:19,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116988206] [2023-12-21 00:38:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:19,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:19,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:19,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:19,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 00:38:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:19,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 00:38:19,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8009 proven. 147 refuted. 0 times theorem prover too weak. 7864 trivial. 0 not checked. [2023-12-21 00:38:20,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:38:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 120 proven. 147 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-21 00:38:21,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:21,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401825837] [2023-12-21 00:38:21,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:21,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116988206] [2023-12-21 00:38:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116988206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:38:21,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:38:21,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-21 00:38:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350217284] [2023-12-21 00:38:21,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:38:21,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 00:38:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 00:38:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-21 00:38:21,338 INFO L87 Difference]: Start difference. First operand 464 states and 773 transitions. Second operand has 14 states, 14 states have (on average 14.642857142857142) internal successors, (205), 14 states have internal predecessors, (205), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) [2023-12-21 00:38:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:23,253 INFO L93 Difference]: Finished difference Result 1699 states and 2846 transitions. [2023-12-21 00:38:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 00:38:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.642857142857142) internal successors, (205), 14 states have internal predecessors, (205), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) Word has length 583 [2023-12-21 00:38:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:23,262 INFO L225 Difference]: With dead ends: 1699 [2023-12-21 00:38:23,262 INFO L226 Difference]: Without dead ends: 1236 [2023-12-21 00:38:23,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2023-12-21 00:38:23,268 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1503 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:23,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 2979 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 00:38:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-12-21 00:38:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 820. [2023-12-21 00:38:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 607 states have (on average 1.5601317957166392) internal successors, (947), 608 states have internal predecessors, (947), 208 states have call successors, (208), 4 states have call predecessors, (208), 4 states have return successors, (208), 207 states have call predecessors, (208), 208 states have call successors, (208) [2023-12-21 00:38:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1363 transitions. [2023-12-21 00:38:23,351 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1363 transitions. Word has length 583 [2023-12-21 00:38:23,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:23,352 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1363 transitions. [2023-12-21 00:38:23,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.642857142857142) internal successors, (205), 14 states have internal predecessors, (205), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) [2023-12-21 00:38:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1363 transitions. [2023-12-21 00:38:23,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-21 00:38:23,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:23,378 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:23,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:23,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:23,579 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:23,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash -302853766, now seen corresponding path program 1 times [2023-12-21 00:38:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745124918] [2023-12-21 00:38:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:23,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:23,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326643164] [2023-12-21 00:38:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:23,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:23,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:23,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:23,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 00:38:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:24,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:38:24,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7107 proven. 180 refuted. 0 times theorem prover too weak. 8733 trivial. 0 not checked. [2023-12-21 00:38:24,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:38:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 87 proven. 180 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-21 00:38:24,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:24,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745124918] [2023-12-21 00:38:24,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:24,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326643164] [2023-12-21 00:38:24,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326643164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:38:24,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:38:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 00:38:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247214039] [2023-12-21 00:38:24,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:38:25,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:38:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:25,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:38:25,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:38:25,002 INFO L87 Difference]: Start difference. First operand 820 states and 1363 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-21 00:38:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:25,549 INFO L93 Difference]: Finished difference Result 1131 states and 1869 transitions. [2023-12-21 00:38:25,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 00:38:25,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) Word has length 583 [2023-12-21 00:38:25,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:25,553 INFO L225 Difference]: With dead ends: 1131 [2023-12-21 00:38:25,554 INFO L226 Difference]: Without dead ends: 575 [2023-12-21 00:38:25,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1168 GetRequests, 1158 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:38:25,557 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 415 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:25,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 785 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 00:38:25,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2023-12-21 00:38:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 567. [2023-12-21 00:38:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 381 states have (on average 1.4593175853018372) internal successors, (556), 381 states have internal predecessors, (556), 180 states have call successors, (180), 5 states have call predecessors, (180), 5 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2023-12-21 00:38:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 916 transitions. [2023-12-21 00:38:25,603 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 916 transitions. Word has length 583 [2023-12-21 00:38:25,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:25,604 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 916 transitions. [2023-12-21 00:38:25,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-21 00:38:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 916 transitions. [2023-12-21 00:38:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-12-21 00:38:25,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:25,609 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:25,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 00:38:25,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:25,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:25,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash -672323090, now seen corresponding path program 1 times [2023-12-21 00:38:25,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:25,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231256473] [2023-12-21 00:38:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:25,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:25,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:25,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004383112] [2023-12-21 00:38:25,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:25,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:25,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:25,889 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:25,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 00:38:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:26,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 00:38:26,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-21 00:38:26,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:38:26,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:26,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231256473] [2023-12-21 00:38:26,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:26,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004383112] [2023-12-21 00:38:26,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004383112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:38:26,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:38:26,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:38:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592940445] [2023-12-21 00:38:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:38:26,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:38:26,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:38:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:38:26,399 INFO L87 Difference]: Start difference. First operand 567 states and 916 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:26,923 INFO L93 Difference]: Finished difference Result 1633 states and 2666 transitions. [2023-12-21 00:38:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:38:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 584 [2023-12-21 00:38:26,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:26,930 INFO L225 Difference]: With dead ends: 1633 [2023-12-21 00:38:26,930 INFO L226 Difference]: Without dead ends: 1334 [2023-12-21 00:38:26,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:38:26,932 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 690 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:26,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1336 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 00:38:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-12-21 00:38:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1084. [2023-12-21 00:38:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 871 states have (on average 1.5752009184845006) internal successors, (1372), 872 states have internal predecessors, (1372), 206 states have call successors, (206), 6 states have call predecessors, (206), 6 states have return successors, (206), 205 states have call predecessors, (206), 206 states have call successors, (206) [2023-12-21 00:38:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1784 transitions. [2023-12-21 00:38:27,013 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1784 transitions. Word has length 584 [2023-12-21 00:38:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:27,014 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1784 transitions. [2023-12-21 00:38:27,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1784 transitions. [2023-12-21 00:38:27,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-12-21 00:38:27,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:27,019 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:27,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:27,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:27,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:27,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:27,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1733332050, now seen corresponding path program 1 times [2023-12-21 00:38:27,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:27,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560789837] [2023-12-21 00:38:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:27,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:27,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:27,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075587651] [2023-12-21 00:38:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:27,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:27,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:27,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:27,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 00:38:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:27,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 00:38:27,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-21 00:38:28,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:38:28,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:28,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560789837] [2023-12-21 00:38:28,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:28,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075587651] [2023-12-21 00:38:28,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075587651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:38:28,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:38:28,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 00:38:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235596311] [2023-12-21 00:38:28,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:38:28,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 00:38:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 00:38:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 00:38:28,327 INFO L87 Difference]: Start difference. First operand 1084 states and 1784 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:29,795 INFO L93 Difference]: Finished difference Result 4208 states and 6919 transitions. [2023-12-21 00:38:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 00:38:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 584 [2023-12-21 00:38:29,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:29,811 INFO L225 Difference]: With dead ends: 4208 [2023-12-21 00:38:29,811 INFO L226 Difference]: Without dead ends: 3290 [2023-12-21 00:38:29,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-21 00:38:29,815 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 1732 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:29,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 2769 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 00:38:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2023-12-21 00:38:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3158. [2023-12-21 00:38:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 2583 states have (on average 1.5660085172280294) internal successors, (4045), 2587 states have internal predecessors, (4045), 554 states have call successors, (554), 20 states have call predecessors, (554), 20 states have return successors, (554), 550 states have call predecessors, (554), 554 states have call successors, (554) [2023-12-21 00:38:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 5153 transitions. [2023-12-21 00:38:30,032 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 5153 transitions. Word has length 584 [2023-12-21 00:38:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:30,032 INFO L495 AbstractCegarLoop]: Abstraction has 3158 states and 5153 transitions. [2023-12-21 00:38:30,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:30,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 5153 transitions. [2023-12-21 00:38:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-12-21 00:38:30,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:30,038 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:30,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:30,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:30,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:30,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash -194992020, now seen corresponding path program 1 times [2023-12-21 00:38:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:30,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944147174] [2023-12-21 00:38:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:30,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:30,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:30,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424586722] [2023-12-21 00:38:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:30,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:30,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:30,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:30,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 00:38:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:30,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 00:38:30,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-21 00:38:30,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:38:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:30,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944147174] [2023-12-21 00:38:30,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:30,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424586722] [2023-12-21 00:38:30,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424586722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:38:30,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:38:30,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:38:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604066558] [2023-12-21 00:38:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:38:30,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:38:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:38:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:38:30,859 INFO L87 Difference]: Start difference. First operand 3158 states and 5153 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:31,723 INFO L93 Difference]: Finished difference Result 9702 states and 15973 transitions. [2023-12-21 00:38:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:38:31,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 584 [2023-12-21 00:38:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:31,754 INFO L225 Difference]: With dead ends: 9702 [2023-12-21 00:38:31,754 INFO L226 Difference]: Without dead ends: 6888 [2023-12-21 00:38:31,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:38:31,763 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 867 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:31,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1554 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 00:38:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2023-12-21 00:38:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 2424. [2023-12-21 00:38:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2089 states have (on average 1.5773097175682145) internal successors, (3295), 2091 states have internal predecessors, (3295), 322 states have call successors, (322), 12 states have call predecessors, (322), 12 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-12-21 00:38:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3939 transitions. [2023-12-21 00:38:32,010 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3939 transitions. Word has length 584 [2023-12-21 00:38:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:32,011 INFO L495 AbstractCegarLoop]: Abstraction has 2424 states and 3939 transitions. [2023-12-21 00:38:32,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-21 00:38:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3939 transitions. [2023-12-21 00:38:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-12-21 00:38:32,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:32,016 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:32,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:32,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 00:38:32,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:32,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:32,234 INFO L85 PathProgramCache]: Analyzing trace with hash 681026986, now seen corresponding path program 1 times [2023-12-21 00:38:32,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:32,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6164406] [2023-12-21 00:38:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:32,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:32,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:32,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006358104] [2023-12-21 00:38:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:32,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:32,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:32,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:32,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 00:38:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:32,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:38:32,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7043 proven. 84 refuted. 0 times theorem prover too weak. 8893 trivial. 0 not checked. [2023-12-21 00:38:33,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:38:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 183 proven. 84 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-21 00:38:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6164406] [2023-12-21 00:38:33,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006358104] [2023-12-21 00:38:33,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006358104] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:38:33,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:38:33,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 00:38:33,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780890330] [2023-12-21 00:38:33,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:38:33,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:38:33,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:38:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:38:33,318 INFO L87 Difference]: Start difference. First operand 2424 states and 3939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-21 00:38:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:33,940 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2023-12-21 00:38:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 00:38:33,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 584 [2023-12-21 00:38:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:33,950 INFO L225 Difference]: With dead ends: 3988 [2023-12-21 00:38:33,950 INFO L226 Difference]: Without dead ends: 1858 [2023-12-21 00:38:33,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1160 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:38:33,959 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 663 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:33,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 796 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 00:38:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2023-12-21 00:38:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1808. [2023-12-21 00:38:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1470 states have (on average 1.5319727891156463) internal successors, (2252), 1472 states have internal predecessors, (2252), 322 states have call successors, (322), 15 states have call predecessors, (322), 15 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-12-21 00:38:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2896 transitions. [2023-12-21 00:38:34,112 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2896 transitions. Word has length 584 [2023-12-21 00:38:34,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:34,113 INFO L495 AbstractCegarLoop]: Abstraction has 1808 states and 2896 transitions. [2023-12-21 00:38:34,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-21 00:38:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2896 transitions. [2023-12-21 00:38:34,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-12-21 00:38:34,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:34,118 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:34,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:34,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:34,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:34,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash 858255166, now seen corresponding path program 1 times [2023-12-21 00:38:34,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:34,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548157092] [2023-12-21 00:38:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:34,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:34,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:34,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767080082] [2023-12-21 00:38:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:34,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:34,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:34,396 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:34,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 00:38:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:34,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 00:38:34,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7449 proven. 171 refuted. 0 times theorem prover too weak. 8400 trivial. 0 not checked. [2023-12-21 00:38:35,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:38:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 96 proven. 171 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-21 00:38:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548157092] [2023-12-21 00:38:35,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767080082] [2023-12-21 00:38:35,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767080082] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:38:35,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:38:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2023-12-21 00:38:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447739960] [2023-12-21 00:38:35,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:38:35,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 00:38:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:35,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 00:38:35,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:38:35,737 INFO L87 Difference]: Start difference. First operand 1808 states and 2896 transitions. Second operand has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-21 00:38:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:36,978 INFO L93 Difference]: Finished difference Result 3072 states and 4912 transitions. [2023-12-21 00:38:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 00:38:36,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 585 [2023-12-21 00:38:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:36,986 INFO L225 Difference]: With dead ends: 3072 [2023-12-21 00:38:36,986 INFO L226 Difference]: Without dead ends: 1528 [2023-12-21 00:38:36,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1160 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-12-21 00:38:36,990 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 797 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:36,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1242 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 00:38:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2023-12-21 00:38:37,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1422. [2023-12-21 00:38:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1081 states have (on average 1.479185938945421) internal successors, (1599), 1083 states have internal predecessors, (1599), 322 states have call successors, (322), 18 states have call predecessors, (322), 18 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-12-21 00:38:37,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2243 transitions. [2023-12-21 00:38:37,124 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2243 transitions. Word has length 585 [2023-12-21 00:38:37,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:37,124 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2243 transitions. [2023-12-21 00:38:37,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-21 00:38:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2243 transitions. [2023-12-21 00:38:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-21 00:38:37,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:37,130 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:37,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:37,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 00:38:37,342 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:37,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1007197216, now seen corresponding path program 1 times [2023-12-21 00:38:37,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:37,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53936208] [2023-12-21 00:38:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:37,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:37,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:37,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630984596] [2023-12-21 00:38:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:37,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:37,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:37,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:37,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 00:38:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:37,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 00:38:37,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 3939 proven. 36 refuted. 0 times theorem prover too weak. 12045 trivial. 0 not checked. [2023-12-21 00:38:38,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:38:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 231 proven. 36 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-21 00:38:38,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:38,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53936208] [2023-12-21 00:38:38,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:38,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630984596] [2023-12-21 00:38:38,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630984596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:38:38,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:38:38,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2023-12-21 00:38:38,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146557435] [2023-12-21 00:38:38,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:38:38,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 00:38:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:38,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 00:38:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:38:38,418 INFO L87 Difference]: Start difference. First operand 1422 states and 2243 transitions. Second operand has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-21 00:38:39,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:39,474 INFO L93 Difference]: Finished difference Result 2658 states and 4187 transitions. [2023-12-21 00:38:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 00:38:39,475 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 586 [2023-12-21 00:38:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:39,481 INFO L225 Difference]: With dead ends: 2658 [2023-12-21 00:38:39,482 INFO L226 Difference]: Without dead ends: 1456 [2023-12-21 00:38:39,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1162 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-12-21 00:38:39,485 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 662 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:39,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1023 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 00:38:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2023-12-21 00:38:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1434. [2023-12-21 00:38:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1090 states have (on average 1.4623853211009175) internal successors, (1594), 1092 states have internal predecessors, (1594), 322 states have call successors, (322), 21 states have call predecessors, (322), 21 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-12-21 00:38:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2238 transitions. [2023-12-21 00:38:39,620 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2238 transitions. Word has length 586 [2023-12-21 00:38:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:39,620 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 2238 transitions. [2023-12-21 00:38:39,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-21 00:38:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2238 transitions. [2023-12-21 00:38:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-21 00:38:39,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:39,626 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:39,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 00:38:39,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:39,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash 802290020, now seen corresponding path program 1 times [2023-12-21 00:38:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187225023] [2023-12-21 00:38:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:39,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:39,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668148183] [2023-12-21 00:38:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:39,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:39,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:39,902 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:39,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 00:38:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:40,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 00:38:40,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 10381 proven. 417 refuted. 0 times theorem prover too weak. 5222 trivial. 0 not checked. [2023-12-21 00:38:43,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:38:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 258 proven. 273 refuted. 0 times theorem prover too weak. 15489 trivial. 0 not checked. [2023-12-21 00:38:45,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:38:45,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187225023] [2023-12-21 00:38:45,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:38:45,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668148183] [2023-12-21 00:38:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668148183] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:38:45,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:38:45,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-21 00:38:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391503052] [2023-12-21 00:38:45,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:38:45,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 00:38:45,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:38:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 00:38:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2023-12-21 00:38:45,567 INFO L87 Difference]: Start difference. First operand 1434 states and 2238 transitions. Second operand has 21 states, 21 states have (on average 13.285714285714286) internal successors, (279), 21 states have internal predecessors, (279), 10 states have call successors, (168), 6 states have call predecessors, (168), 10 states have return successors, (168), 10 states have call predecessors, (168), 10 states have call successors, (168) [2023-12-21 00:38:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:38:46,536 INFO L93 Difference]: Finished difference Result 2550 states and 3941 transitions. [2023-12-21 00:38:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 00:38:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.285714285714286) internal successors, (279), 21 states have internal predecessors, (279), 10 states have call successors, (168), 6 states have call predecessors, (168), 10 states have return successors, (168), 10 states have call predecessors, (168), 10 states have call successors, (168) Word has length 586 [2023-12-21 00:38:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:38:46,544 INFO L225 Difference]: With dead ends: 2550 [2023-12-21 00:38:46,544 INFO L226 Difference]: Without dead ends: 1504 [2023-12-21 00:38:46,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1183 GetRequests, 1153 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=642, Unknown=0, NotChecked=0, Total=992 [2023-12-21 00:38:46,548 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 959 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 00:38:46,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 691 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 00:38:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2023-12-21 00:38:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1482. [2023-12-21 00:38:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1126 states have (on average 1.433392539964476) internal successors, (1614), 1128 states have internal predecessors, (1614), 322 states have call successors, (322), 33 states have call predecessors, (322), 33 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-12-21 00:38:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2258 transitions. [2023-12-21 00:38:46,695 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2258 transitions. Word has length 586 [2023-12-21 00:38:46,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:38:46,696 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 2258 transitions. [2023-12-21 00:38:46,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.285714285714286) internal successors, (279), 21 states have internal predecessors, (279), 10 states have call successors, (168), 6 states have call predecessors, (168), 10 states have return successors, (168), 10 states have call predecessors, (168), 10 states have call successors, (168) [2023-12-21 00:38:46,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2258 transitions. [2023-12-21 00:38:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-21 00:38:46,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:38:46,718 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:38:46,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 00:38:46,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 00:38:46,928 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:38:46,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:38:46,928 INFO L85 PathProgramCache]: Analyzing trace with hash -786057882, now seen corresponding path program 1 times [2023-12-21 00:38:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:38:46,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783029288] [2023-12-21 00:38:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:38:46,985 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:38:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391963964] [2023-12-21 00:38:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:38:46,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:38:46,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:38:46,987 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:38:47,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 00:38:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:38:48,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 00:38:48,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:38:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8030 proven. 627 refuted. 0 times theorem prover too weak. 7363 trivial. 0 not checked. [2023-12-21 00:38:56,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:39:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 648 proven. 657 refuted. 0 times theorem prover too weak. 14715 trivial. 0 not checked. [2023-12-21 00:39:37,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:39:37,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783029288] [2023-12-21 00:39:37,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:39:37,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391963964] [2023-12-21 00:39:37,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391963964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:39:37,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:39:37,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2023-12-21 00:39:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439539360] [2023-12-21 00:39:37,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:39:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 00:39:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:39:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 00:39:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1691, Unknown=2, NotChecked=0, Total=2070 [2023-12-21 00:39:37,155 INFO L87 Difference]: Start difference. First operand 1482 states and 2258 transitions. Second operand has 46 states, 45 states have (on average 6.511111111111111) internal successors, (293), 44 states have internal predecessors, (293), 12 states have call successors, (180), 7 states have call predecessors, (180), 15 states have return successors, (180), 12 states have call predecessors, (180), 12 states have call successors, (180) [2023-12-21 00:39:47,618 WARN L293 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 99 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 00:40:39,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-21 00:40:50,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-21 00:40:55,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-21 00:41:01,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 139 [2023-12-21 00:41:01,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1132 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1858 ImplicationChecksByTransitivity, 73.2s TimeCoverageRelationStatistics Valid=1677, Invalid=5627, Unknown=6, NotChecked=0, Total=7310 [2023-12-21 00:41:01,674 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1167 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 1022 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:41:01,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1689 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 2388 Invalid, 3 Unknown, 0 Unchecked, 35.0s Time] [2023-12-21 00:41:01,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-21 00:41:01,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 00:41:01,881 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-12-21 00:41:01,887 INFO L158 Benchmark]: Toolchain (without parser) took 168632.40ms. Allocated memory was 242.2MB in the beginning and 795.9MB in the end (delta: 553.6MB). Free memory was 186.2MB in the beginning and 334.5MB in the end (delta: -148.3MB). Peak memory consumption was 407.1MB. Max. memory is 8.0GB. [2023-12-21 00:41:01,888 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 177.2MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 00:41:01,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.17ms. Allocated memory is still 242.2MB. Free memory was 186.2MB in the beginning and 149.5MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-21 00:41:01,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.93ms. Allocated memory is still 242.2MB. Free memory was 148.9MB in the beginning and 135.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 00:41:01,888 INFO L158 Benchmark]: Boogie Preprocessor took 143.73ms. Allocated memory is still 242.2MB. Free memory was 135.3MB in the beginning and 101.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-21 00:41:01,891 INFO L158 Benchmark]: RCFGBuilder took 1222.13ms. Allocated memory is still 242.2MB. Free memory was 101.8MB in the beginning and 126.5MB in the end (delta: -24.8MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. [2023-12-21 00:41:01,893 INFO L158 Benchmark]: TraceAbstraction took 166545.47ms. Allocated memory was 242.2MB in the beginning and 795.9MB in the end (delta: 553.6MB). Free memory was 126.0MB in the beginning and 334.5MB in the end (delta: -208.5MB). Peak memory consumption was 345.4MB. Max. memory is 8.0GB. [2023-12-21 00:41:01,894 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 177.2MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 604.17ms. Allocated memory is still 242.2MB. Free memory was 186.2MB in the beginning and 149.5MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 111.93ms. Allocated memory is still 242.2MB. Free memory was 148.9MB in the beginning and 135.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 143.73ms. Allocated memory is still 242.2MB. Free memory was 135.3MB in the beginning and 101.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1222.13ms. Allocated memory is still 242.2MB. Free memory was 101.8MB in the beginning and 126.5MB in the end (delta: -24.8MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. * TraceAbstraction took 166545.47ms. Allocated memory was 242.2MB in the beginning and 795.9MB in the end (delta: 553.6MB). Free memory was 126.0MB in the beginning and 334.5MB in the end (delta: -208.5MB). Peak memory consumption was 345.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...