/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 09:10:35,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 09:10:35,560 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 09:10:35,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 09:10:35,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 09:10:35,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 09:10:35,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 09:10:35,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 09:10:35,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 09:10:35,589 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 09:10:35,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 09:10:35,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 09:10:35,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 09:10:35,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 09:10:35,591 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 09:10:35,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 09:10:35,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 09:10:35,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 09:10:35,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 09:10:35,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 09:10:35,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 09:10:35,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 09:10:35,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 09:10:35,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 09:10:35,593 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 09:10:35,593 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 09:10:35,593 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 09:10:35,594 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 09:10:35,594 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 09:10:35,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 09:10:35,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 09:10:35,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 09:10:35,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 09:10:35,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 09:10:35,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 09:10:35,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 09:10:35,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 09:10:35,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 09:10:35,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 09:10:35,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 09:10:35,596 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 09:10:35,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 09:10:35,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 09:10:35,597 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 09:10:35,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 09:10:35,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 09:10:35,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 09:10:35,873 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 09:10:35,873 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 09:10:35,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i [2023-12-19 09:10:37,322 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 09:10:37,580 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 09:10:37,581 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i [2023-12-19 09:10:37,599 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ac503559/4c50b043309446108e78fd5c3c637087/FLAG47d1bd3af [2023-12-19 09:10:37,661 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ac503559/4c50b043309446108e78fd5c3c637087 [2023-12-19 09:10:37,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 09:10:37,665 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 09:10:37,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 09:10:37,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 09:10:37,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 09:10:37,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:10:37" (1/1) ... [2023-12-19 09:10:37,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d634426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:37, skipping insertion in model container [2023-12-19 09:10:37,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:10:37" (1/1) ... [2023-12-19 09:10:37,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 09:10:37,995 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_fillercode_fillercodestructure_filler-pr-cn_file-34.i[919,932] [2023-12-19 09:10:38,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 09:10:38,084 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 09:10:38,111 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_fillercode_fillercodestructure_filler-pr-cn_file-34.i[919,932] [2023-12-19 09:10:38,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 09:10:38,178 INFO L206 MainTranslator]: Completed translation [2023-12-19 09:10:38,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38 WrapperNode [2023-12-19 09:10:38,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 09:10:38,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 09:10:38,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 09:10:38,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 09:10:38,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,265 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 266 [2023-12-19 09:10:38,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 09:10:38,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 09:10:38,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 09:10:38,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 09:10:38,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,299 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,369 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]. [2023-12-19 09:10:38,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 09:10:38,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 09:10:38,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 09:10:38,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 09:10:38,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (1/1) ... [2023-12-19 09:10:38,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 09:10:38,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:10:38,503 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) [2023-12-19 09:10:38,546 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 [2023-12-19 09:10:38,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 09:10:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 09:10:38,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 09:10:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 09:10:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 09:10:38,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 09:10:38,713 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 09:10:38,714 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 09:10:39,190 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 09:10:39,220 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 09:10:39,220 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 09:10:39,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:10:39 BoogieIcfgContainer [2023-12-19 09:10:39,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 09:10:39,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 09:10:39,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 09:10:39,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 09:10:39,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 09:10:37" (1/3) ... [2023-12-19 09:10:39,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac596bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:10:39, skipping insertion in model container [2023-12-19 09:10:39,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:10:38" (2/3) ... [2023-12-19 09:10:39,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac596bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:10:39, skipping insertion in model container [2023-12-19 09:10:39,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:10:39" (3/3) ... [2023-12-19 09:10:39,226 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i [2023-12-19 09:10:39,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 09:10:39,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 09:10:39,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 09:10:39,285 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;@3501695a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 09:10:39,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 09:10:39,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 09:10:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-19 09:10:39,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:10:39,301 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:10:39,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:10:39,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:10:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash -290267521, now seen corresponding path program 1 times [2023-12-19 09:10:39,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:10:39,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429346639] [2023-12-19 09:10:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:39,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:10:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:10:39,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:10:39,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429346639] [2023-12-19 09:10:39,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 09:10:39,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872824617] [2023-12-19 09:10:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:39,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:10:39,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:10:39,490 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) [2023-12-19 09:10:39,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 09:10:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:10:39,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 09:10:39,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:10:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-12-19 09:10:39,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:10:39,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872824617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:10:39,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:10:39,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 09:10:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403664493] [2023-12-19 09:10:39,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:10:39,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 09:10:39,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:10:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 09:10:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 09:10:39,777 INFO L87 Difference]: Start difference. First operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 09:10:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:10:39,826 INFO L93 Difference]: Finished difference Result 201 states and 367 transitions. [2023-12-19 09:10:39,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 09:10:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 208 [2023-12-19 09:10:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:10:39,848 INFO L225 Difference]: With dead ends: 201 [2023-12-19 09:10:39,848 INFO L226 Difference]: Without dead ends: 100 [2023-12-19 09:10:39,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 09:10:39,853 INFO L413 NwaCegarLoop]: 160 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, 160 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 [2023-12-19 09:10:39,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 09:10:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-19 09:10:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-19 09:10:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 09:10:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 163 transitions. [2023-12-19 09:10:39,900 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 163 transitions. Word has length 208 [2023-12-19 09:10:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:10:39,900 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 163 transitions. [2023-12-19 09:10:39,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 09:10:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 163 transitions. [2023-12-19 09:10:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-19 09:10:39,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:10:39,904 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:10:39,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 09:10:40,105 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 [2023-12-19 09:10:40,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:10:40,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:10:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash -526519995, now seen corresponding path program 1 times [2023-12-19 09:10:40,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:10:40,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712250590] [2023-12-19 09:10:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:10:40,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:10:40,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344438464] [2023-12-19 09:10:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:40,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:10:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:10:40,300 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) [2023-12-19 09:10:40,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 09:10:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:10:40,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 09:10:40,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:10:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:10:40,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:10:40,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:10:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712250590] [2023-12-19 09:10:40,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:10:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344438464] [2023-12-19 09:10:40,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344438464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:10:40,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:10:40,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 09:10:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107532583] [2023-12-19 09:10:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:10:40,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 09:10:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:10:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 09:10:40,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:10:40,719 INFO L87 Difference]: Start difference. First operand 100 states and 163 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:10:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:10:41,049 INFO L93 Difference]: Finished difference Result 297 states and 483 transitions. [2023-12-19 09:10:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 09:10:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 208 [2023-12-19 09:10:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:10:41,058 INFO L225 Difference]: With dead ends: 297 [2023-12-19 09:10:41,058 INFO L226 Difference]: Without dead ends: 198 [2023-12-19 09:10:41,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 09:10:41,062 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 159 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 09:10:41,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 584 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 09:10:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-19 09:10:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 102. [2023-12-19 09:10:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 09:10:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 165 transitions. [2023-12-19 09:10:41,094 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 165 transitions. Word has length 208 [2023-12-19 09:10:41,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:10:41,096 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 165 transitions. [2023-12-19 09:10:41,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:10:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 165 transitions. [2023-12-19 09:10:41,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-19 09:10:41,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:10:41,102 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:10:41,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 09:10:41,308 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 [2023-12-19 09:10:41,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:10:41,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:10:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash -503787845, now seen corresponding path program 1 times [2023-12-19 09:10:41,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:10:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874104680] [2023-12-19 09:10:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:10:41,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:10:41,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783958211] [2023-12-19 09:10:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:41,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:10:41,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:10:41,392 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) [2023-12-19 09:10:41,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 09:10:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:10:41,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 09:10:41,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:10:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:10:41,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:10:41,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:10:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874104680] [2023-12-19 09:10:41,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:10:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783958211] [2023-12-19 09:10:41,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783958211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:10:41,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:10:41,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 09:10:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247775068] [2023-12-19 09:10:41,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:10:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 09:10:41,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:10:41,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 09:10:41,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 09:10:41,759 INFO L87 Difference]: Start difference. First operand 102 states and 165 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:10:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:10:41,902 INFO L93 Difference]: Finished difference Result 343 states and 556 transitions. [2023-12-19 09:10:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 09:10:41,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 209 [2023-12-19 09:10:41,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:10:41,907 INFO L225 Difference]: With dead ends: 343 [2023-12-19 09:10:41,907 INFO L226 Difference]: Without dead ends: 242 [2023-12-19 09:10:41,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:10:41,929 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 157 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 09:10:41,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 524 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 09:10:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-19 09:10:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 211. [2023-12-19 09:10:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 09:10:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 345 transitions. [2023-12-19 09:10:42,030 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 345 transitions. Word has length 209 [2023-12-19 09:10:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:10:42,030 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 345 transitions. [2023-12-19 09:10:42,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:10:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 345 transitions. [2023-12-19 09:10:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:10:42,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:10:42,075 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:10:42,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 09:10:42,299 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 [2023-12-19 09:10:42,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:10:42,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:10:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1579215674, now seen corresponding path program 1 times [2023-12-19 09:10:42,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:10:42,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903159749] [2023-12-19 09:10:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:42,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:10:42,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:10:42,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475655772] [2023-12-19 09:10:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:42,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:10:42,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:10:42,378 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) [2023-12-19 09:10:42,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 09:10:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:10:42,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 09:10:42,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:10:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 978 proven. 63 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2023-12-19 09:10:42,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:10:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 09:10:42,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:10:42,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903159749] [2023-12-19 09:10:42,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:10:42,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475655772] [2023-12-19 09:10:42,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475655772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:10:42,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:10:42,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 09:10:42,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238561378] [2023-12-19 09:10:42,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:10:42,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 09:10:42,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:10:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 09:10:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 09:10:42,878 INFO L87 Difference]: Start difference. First operand 211 states and 345 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-19 09:10:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:10:43,315 INFO L93 Difference]: Finished difference Result 334 states and 535 transitions. [2023-12-19 09:10:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 09:10:43,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 210 [2023-12-19 09:10:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:10:43,319 INFO L225 Difference]: With dead ends: 334 [2023-12-19 09:10:43,320 INFO L226 Difference]: Without dead ends: 225 [2023-12-19 09:10:43,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 09:10:43,324 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 250 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 09:10:43,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 667 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 09:10:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-19 09:10:43,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2023-12-19 09:10:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 148 states have (on average 1.4662162162162162) internal successors, (217), 148 states have internal predecessors, (217), 66 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 09:10:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 349 transitions. [2023-12-19 09:10:43,420 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 349 transitions. Word has length 210 [2023-12-19 09:10:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:10:43,421 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 349 transitions. [2023-12-19 09:10:43,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-19 09:10:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 349 transitions. [2023-12-19 09:10:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:10:43,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:10:43,424 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:10:43,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 09:10:43,636 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 [2023-12-19 09:10:43,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:10:43,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:10:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2001917500, now seen corresponding path program 1 times [2023-12-19 09:10:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:10:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257826273] [2023-12-19 09:10:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:43,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:10:43,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:10:43,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637490696] [2023-12-19 09:10:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:10:43,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:10:43,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:10:43,677 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) [2023-12-19 09:10:43,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 09:10:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:10:43,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 09:10:43,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:10:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-19 09:10:45,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:11:55,133 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 188 DAG size of output: 177 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 09:12:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:12:00,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257826273] [2023-12-19 09:12:00,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:12:00,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637490696] [2023-12-19 09:12:00,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637490696] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 09:12:00,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:12:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-19 09:12:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622842793] [2023-12-19 09:12:00,644 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 09:12:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 09:12:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:12:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 09:12:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=508, Unknown=3, NotChecked=0, Total=600 [2023-12-19 09:12:00,646 INFO L87 Difference]: Start difference. First operand 219 states and 349 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 09:12:06,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 09:12:07,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:12:07,054 INFO L93 Difference]: Finished difference Result 774 states and 1209 transitions. [2023-12-19 09:12:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 09:12:07,054 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-12-19 09:12:07,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:12:07,057 INFO L225 Difference]: With dead ends: 774 [2023-12-19 09:12:07,057 INFO L226 Difference]: Without dead ends: 556 [2023-12-19 09:12:07,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=350, Invalid=1539, Unknown=3, NotChecked=0, Total=1892 [2023-12-19 09:12:07,058 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 694 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 09:12:07,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 874 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 09:12:07,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-12-19 09:12:07,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 432. [2023-12-19 09:12:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 325 states have (on average 1.4892307692307691) internal successors, (484), 325 states have internal predecessors, (484), 99 states have call successors, (99), 7 states have call predecessors, (99), 7 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 09:12:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 682 transitions. [2023-12-19 09:12:07,087 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 682 transitions. Word has length 210 [2023-12-19 09:12:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:12:07,088 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 682 transitions. [2023-12-19 09:12:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 09:12:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 682 transitions. [2023-12-19 09:12:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:12:07,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:12:07,090 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:12:07,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 09:12:07,296 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 [2023-12-19 09:12:07,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:12:07,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:12:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2059175802, now seen corresponding path program 1 times [2023-12-19 09:12:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:12:07,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249053028] [2023-12-19 09:12:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:12:07,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:12:07,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987064449] [2023-12-19 09:12:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:07,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:12:07,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:12:07,342 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) [2023-12-19 09:12:07,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 09:12:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:12:07,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:12:07,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:12:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:12:13,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:12:13,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:12:13,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249053028] [2023-12-19 09:12:13,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:12:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987064449] [2023-12-19 09:12:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987064449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:12:13,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:12:13,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:12:13,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070208753] [2023-12-19 09:12:13,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:12:13,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:12:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:12:13,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:12:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:12:13,791 INFO L87 Difference]: Start difference. First operand 432 states and 682 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:12:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:12:21,918 INFO L93 Difference]: Finished difference Result 897 states and 1407 transitions. [2023-12-19 09:12:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:12:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 09:12:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:12:21,937 INFO L225 Difference]: With dead ends: 897 [2023-12-19 09:12:21,937 INFO L226 Difference]: Without dead ends: 792 [2023-12-19 09:12:21,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:12:21,938 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 470 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 09:12:21,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1183 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 09:12:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-12-19 09:12:22,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 698. [2023-12-19 09:12:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 521 states have (on average 1.4798464491362764) internal successors, (771), 521 states have internal predecessors, (771), 165 states have call successors, (165), 11 states have call predecessors, (165), 11 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2023-12-19 09:12:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1101 transitions. [2023-12-19 09:12:22,036 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1101 transitions. Word has length 210 [2023-12-19 09:12:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:12:22,037 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1101 transitions. [2023-12-19 09:12:22,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:12:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1101 transitions. [2023-12-19 09:12:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:12:22,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:12:22,051 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:12:22,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 09:12:22,266 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 [2023-12-19 09:12:22,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:12:22,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:12:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1483703170, now seen corresponding path program 1 times [2023-12-19 09:12:22,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:12:22,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895627781] [2023-12-19 09:12:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:22,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:12:22,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:12:22,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665555541] [2023-12-19 09:12:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:22,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:12:22,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:12:22,312 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) [2023-12-19 09:12:22,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 09:12:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:12:22,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 09:12:22,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:12:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:12:26,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:12:26,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:12:26,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895627781] [2023-12-19 09:12:26,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:12:26,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665555541] [2023-12-19 09:12:26,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665555541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:12:26,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:12:26,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 09:12:26,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603334496] [2023-12-19 09:12:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:12:26,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 09:12:26,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:12:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 09:12:26,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 09:12:26,738 INFO L87 Difference]: Start difference. First operand 698 states and 1101 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:12:30,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:12:30,837 INFO L93 Difference]: Finished difference Result 1019 states and 1596 transitions. [2023-12-19 09:12:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 09:12:30,837 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 09:12:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:12:30,843 INFO L225 Difference]: With dead ends: 1019 [2023-12-19 09:12:30,843 INFO L226 Difference]: Without dead ends: 799 [2023-12-19 09:12:30,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-12-19 09:12:30,845 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 522 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 09:12:30,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 914 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 09:12:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-19 09:12:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 706. [2023-12-19 09:12:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 529 states have (on average 1.4782608695652173) internal successors, (782), 529 states have internal predecessors, (782), 165 states have call successors, (165), 11 states have call predecessors, (165), 11 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2023-12-19 09:12:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1112 transitions. [2023-12-19 09:12:30,888 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1112 transitions. Word has length 210 [2023-12-19 09:12:30,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:12:30,888 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1112 transitions. [2023-12-19 09:12:30,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:12:30,888 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1112 transitions. [2023-12-19 09:12:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:12:30,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:12:30,890 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:12:30,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 09:12:31,097 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 [2023-12-19 09:12:31,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:12:31,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:12:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1426444868, now seen corresponding path program 1 times [2023-12-19 09:12:31,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:12:31,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822790954] [2023-12-19 09:12:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:31,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:12:31,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:12:31,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385590963] [2023-12-19 09:12:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:31,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:12:31,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:12:31,143 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) [2023-12-19 09:12:31,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 09:12:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:12:31,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:12:31,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:12:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:12:36,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:12:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:12:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822790954] [2023-12-19 09:12:36,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:12:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385590963] [2023-12-19 09:12:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385590963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:12:36,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:12:36,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:12:36,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184738053] [2023-12-19 09:12:36,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:12:36,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:12:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:12:36,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:12:36,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:12:36,467 INFO L87 Difference]: Start difference. First operand 706 states and 1112 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:12:45,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:12:45,192 INFO L93 Difference]: Finished difference Result 1023 states and 1598 transitions. [2023-12-19 09:12:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:12:45,193 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 09:12:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:12:45,196 INFO L225 Difference]: With dead ends: 1023 [2023-12-19 09:12:45,197 INFO L226 Difference]: Without dead ends: 799 [2023-12-19 09:12:45,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:12:45,198 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 424 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:12:45,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1263 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-19 09:12:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-19 09:12:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 706. [2023-12-19 09:12:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 529 states have (on average 1.4782608695652173) internal successors, (782), 529 states have internal predecessors, (782), 165 states have call successors, (165), 11 states have call predecessors, (165), 11 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2023-12-19 09:12:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1112 transitions. [2023-12-19 09:12:45,247 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1112 transitions. Word has length 210 [2023-12-19 09:12:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:12:45,247 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1112 transitions. [2023-12-19 09:12:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:12:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1112 transitions. [2023-12-19 09:12:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:12:45,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:12:45,250 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:12:45,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 09:12:45,458 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 [2023-12-19 09:12:45,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:12:45,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:12:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash 137892781, now seen corresponding path program 1 times [2023-12-19 09:12:45,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:12:45,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544880267] [2023-12-19 09:12:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:45,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:12:45,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:12:45,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618683983] [2023-12-19 09:12:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:45,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:12:45,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:12:45,516 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) [2023-12-19 09:12:45,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 09:12:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:12:45,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 09:12:45,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:12:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-19 09:12:46,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:12:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:12:49,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:12:49,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544880267] [2023-12-19 09:12:49,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:12:49,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618683983] [2023-12-19 09:12:49,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618683983] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:12:49,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:12:49,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-12-19 09:12:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986081486] [2023-12-19 09:12:49,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:12:49,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 09:12:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:12:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 09:12:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-19 09:12:49,093 INFO L87 Difference]: Start difference. First operand 706 states and 1112 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 09:12:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:12:51,640 INFO L93 Difference]: Finished difference Result 2321 states and 3698 transitions. [2023-12-19 09:12:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 09:12:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-12-19 09:12:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:12:51,650 INFO L225 Difference]: With dead ends: 2321 [2023-12-19 09:12:51,650 INFO L226 Difference]: Without dead ends: 2059 [2023-12-19 09:12:51,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2023-12-19 09:12:51,654 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 515 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 09:12:51,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1985 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 09:12:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2023-12-19 09:12:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1398. [2023-12-19 09:12:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1081 states have (on average 1.5291396854764108) internal successors, (1653), 1081 states have internal predecessors, (1653), 297 states have call successors, (297), 19 states have call predecessors, (297), 19 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 09:12:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2247 transitions. [2023-12-19 09:12:51,794 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2247 transitions. Word has length 210 [2023-12-19 09:12:51,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:12:51,796 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 2247 transitions. [2023-12-19 09:12:51,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 09:12:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2247 transitions. [2023-12-19 09:12:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:12:51,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:12:51,797 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:12:51,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 09:12:52,004 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 [2023-12-19 09:12:52,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:12:52,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:12:52,005 INFO L85 PathProgramCache]: Analyzing trace with hash 722053822, now seen corresponding path program 1 times [2023-12-19 09:12:52,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:12:52,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557962896] [2023-12-19 09:12:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:12:52,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:12:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043553223] [2023-12-19 09:12:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:52,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:12:52,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:12:52,039 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) [2023-12-19 09:12:52,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 09:12:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:12:52,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 09:12:52,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:12:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:12:52,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:12:52,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:12:52,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557962896] [2023-12-19 09:12:52,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:12:52,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043553223] [2023-12-19 09:12:52,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043553223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:12:52,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:12:52,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 09:12:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038203626] [2023-12-19 09:12:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:12:52,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 09:12:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:12:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 09:12:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 09:12:52,701 INFO L87 Difference]: Start difference. First operand 1398 states and 2247 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:12:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:12:52,936 INFO L93 Difference]: Finished difference Result 2489 states and 4009 transitions. [2023-12-19 09:12:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 09:12:52,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 09:12:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:12:52,943 INFO L225 Difference]: With dead ends: 2489 [2023-12-19 09:12:52,943 INFO L226 Difference]: Without dead ends: 1324 [2023-12-19 09:12:52,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:12:52,946 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 87 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 09:12:52,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 466 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 09:12:52,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2023-12-19 09:12:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1291. [2023-12-19 09:12:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 974 states have (on average 1.5246406570841888) internal successors, (1485), 974 states have internal predecessors, (1485), 297 states have call successors, (297), 19 states have call predecessors, (297), 19 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 09:12:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 2079 transitions. [2023-12-19 09:12:53,051 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 2079 transitions. Word has length 210 [2023-12-19 09:12:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:12:53,052 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 2079 transitions. [2023-12-19 09:12:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:12:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 2079 transitions. [2023-12-19 09:12:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:12:53,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:12:53,065 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:12:53,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 09:12:53,272 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 [2023-12-19 09:12:53,272 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:12:53,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:12:53,273 INFO L85 PathProgramCache]: Analyzing trace with hash -168964358, now seen corresponding path program 1 times [2023-12-19 09:12:53,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:12:53,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144376669] [2023-12-19 09:12:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:53,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:12:53,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:12:53,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668460136] [2023-12-19 09:12:53,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:12:53,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:12:53,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:12:53,316 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) [2023-12-19 09:12:53,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 09:12:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:12:53,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:12:53,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:12:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:12:59,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:12:59,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:12:59,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144376669] [2023-12-19 09:12:59,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:12:59,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668460136] [2023-12-19 09:12:59,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668460136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:12:59,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:12:59,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:12:59,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730630395] [2023-12-19 09:12:59,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:12:59,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:12:59,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:12:59,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:12:59,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:12:59,596 INFO L87 Difference]: Start difference. First operand 1291 states and 2079 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:13:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:13:04,243 INFO L93 Difference]: Finished difference Result 2500 states and 4018 transitions. [2023-12-19 09:13:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:13:04,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 09:13:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:13:04,249 INFO L225 Difference]: With dead ends: 2500 [2023-12-19 09:13:04,249 INFO L226 Difference]: Without dead ends: 1442 [2023-12-19 09:13:04,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:13:04,252 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 413 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 09:13:04,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 796 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 09:13:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2023-12-19 09:13:04,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1330. [2023-12-19 09:13:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1011 states have (on average 1.5173095944609298) internal successors, (1534), 1011 states have internal predecessors, (1534), 297 states have call successors, (297), 21 states have call predecessors, (297), 21 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 09:13:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 2128 transitions. [2023-12-19 09:13:04,349 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 2128 transitions. Word has length 210 [2023-12-19 09:13:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:13:04,349 INFO L495 AbstractCegarLoop]: Abstraction has 1330 states and 2128 transitions. [2023-12-19 09:13:04,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:13:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 2128 transitions. [2023-12-19 09:13:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:13:04,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:13:04,350 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:13:04,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 09:13:04,568 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 [2023-12-19 09:13:04,569 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:13:04,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:13:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash 583123966, now seen corresponding path program 1 times [2023-12-19 09:13:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:13:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379436700] [2023-12-19 09:13:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:13:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:13:04,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:13:04,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9648720] [2023-12-19 09:13:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:13:04,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:13:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:13:04,603 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) [2023-12-19 09:13:04,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 09:13:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:13:04,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 09:13:04,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:13:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 753 proven. 225 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2023-12-19 09:13:11,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:13:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:13:36,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:13:36,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379436700] [2023-12-19 09:13:36,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:13:36,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9648720] [2023-12-19 09:13:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9648720] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:13:36,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:13:36,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-12-19 09:13:36,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879941316] [2023-12-19 09:13:36,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:13:36,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 09:13:36,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:13:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 09:13:36,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2023-12-19 09:13:36,925 INFO L87 Difference]: Start difference. First operand 1330 states and 2128 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:13:40,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:06,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:12,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:14,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:23,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:25,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:29,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:33,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:38,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:43,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:55,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:58,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:14:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:14:59,003 INFO L93 Difference]: Finished difference Result 2925 states and 4627 transitions. [2023-12-19 09:14:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 09:14:59,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 09:14:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:14:59,010 INFO L225 Difference]: With dead ends: 2925 [2023-12-19 09:14:59,010 INFO L226 Difference]: Without dead ends: 1827 [2023-12-19 09:14:59,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 41.9s TimeCoverageRelationStatistics Valid=222, Invalid=1034, Unknown=4, NotChecked=0, Total=1260 [2023-12-19 09:14:59,013 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 273 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.5s IncrementalHoareTripleChecker+Time [2023-12-19 09:14:59,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 797 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 300 Invalid, 6 Unknown, 0 Unchecked, 52.5s Time] [2023-12-19 09:14:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2023-12-19 09:14:59,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1438. [2023-12-19 09:14:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1113 states have (on average 1.4986522911051212) internal successors, (1668), 1113 states have internal predecessors, (1668), 297 states have call successors, (297), 27 states have call predecessors, (297), 27 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 09:14:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2262 transitions. [2023-12-19 09:14:59,253 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2262 transitions. Word has length 210 [2023-12-19 09:14:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:14:59,254 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2262 transitions. [2023-12-19 09:14:59,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:14:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2262 transitions. [2023-12-19 09:14:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 09:14:59,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:14:59,256 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:14:59,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 09:14:59,463 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 [2023-12-19 09:14:59,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:14:59,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:14:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash 640382268, now seen corresponding path program 1 times [2023-12-19 09:14:59,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:14:59,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108511416] [2023-12-19 09:14:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:14:59,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:14:59,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:14:59,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691148867] [2023-12-19 09:14:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:14:59,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:14:59,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:14:59,516 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) [2023-12-19 09:14:59,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 09:14:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:14:59,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:14:59,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:15:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:15:05,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:15:05,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:15:05,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108511416] [2023-12-19 09:15:05,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:15:05,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691148867] [2023-12-19 09:15:05,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691148867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:15:05,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:15:05,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:15:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249406249] [2023-12-19 09:15:05,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:15:05,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:15:05,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:15:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:15:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:15:05,057 INFO L87 Difference]: Start difference. First operand 1438 states and 2262 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:12,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:15:12,722 INFO L93 Difference]: Finished difference Result 2750 states and 4329 transitions. [2023-12-19 09:15:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:15:12,723 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 09:15:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:15:12,728 INFO L225 Difference]: With dead ends: 2750 [2023-12-19 09:15:12,728 INFO L226 Difference]: Without dead ends: 1560 [2023-12-19 09:15:12,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:15:12,731 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 350 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:15:12,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1019 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 09:15:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2023-12-19 09:15:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1436. [2023-12-19 09:15:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1111 states have (on average 1.4986498649864985) internal successors, (1665), 1111 states have internal predecessors, (1665), 297 states have call successors, (297), 27 states have call predecessors, (297), 27 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 09:15:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2259 transitions. [2023-12-19 09:15:12,880 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2259 transitions. Word has length 210 [2023-12-19 09:15:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:15:12,881 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 2259 transitions. [2023-12-19 09:15:12,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:12,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2259 transitions. [2023-12-19 09:15:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 09:15:12,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:15:12,882 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:15:12,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 09:15:13,096 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 [2023-12-19 09:15:13,097 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:15:13,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:15:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash -553118739, now seen corresponding path program 1 times [2023-12-19 09:15:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:15:13,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593796889] [2023-12-19 09:15:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:13,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:15:13,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:15:13,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660738279] [2023-12-19 09:15:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:13,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:15:13,135 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:15:13,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 09:15:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:15:13,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 09:15:13,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:15:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:15:13,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:15:13,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:15:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593796889] [2023-12-19 09:15:13,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:15:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660738279] [2023-12-19 09:15:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660738279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:15:13,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:15:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 09:15:13,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797272287] [2023-12-19 09:15:13,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:15:13,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 09:15:13,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:15:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 09:15:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 09:15:13,283 INFO L87 Difference]: Start difference. First operand 1436 states and 2259 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:13,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:15:13,461 INFO L93 Difference]: Finished difference Result 2090 states and 3292 transitions. [2023-12-19 09:15:13,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 09:15:13,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 09:15:13,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:15:13,466 INFO L225 Difference]: With dead ends: 2090 [2023-12-19 09:15:13,466 INFO L226 Difference]: Without dead ends: 1436 [2023-12-19 09:15:13,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:15:13,469 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 46 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 09:15:13,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 416 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 09:15:13,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2023-12-19 09:15:13,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2023-12-19 09:15:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1111 states have (on average 1.4878487848784878) internal successors, (1653), 1111 states have internal predecessors, (1653), 297 states have call successors, (297), 27 states have call predecessors, (297), 27 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 09:15:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2247 transitions. [2023-12-19 09:15:13,615 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2247 transitions. Word has length 211 [2023-12-19 09:15:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:15:13,615 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 2247 transitions. [2023-12-19 09:15:13,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2247 transitions. [2023-12-19 09:15:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 09:15:13,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:15:13,617 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:15:13,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 09:15:13,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:13,823 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:15:13,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:15:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash -160091729, now seen corresponding path program 1 times [2023-12-19 09:15:13,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:15:13,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867782363] [2023-12-19 09:15:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:13,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:15:13,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:15:13,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734744022] [2023-12-19 09:15:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:13,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:13,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:15:13,881 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:15:13,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 09:15:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:15:14,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 09:15:14,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:15:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:15:15,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:15:15,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:15:15,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867782363] [2023-12-19 09:15:15,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:15:15,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734744022] [2023-12-19 09:15:15,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734744022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:15:15,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:15:15,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 09:15:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203577333] [2023-12-19 09:15:15,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:15:15,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 09:15:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:15:15,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 09:15:15,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 09:15:15,884 INFO L87 Difference]: Start difference. First operand 1436 states and 2247 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:15:17,097 INFO L93 Difference]: Finished difference Result 1878 states and 2924 transitions. [2023-12-19 09:15:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 09:15:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 09:15:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:15:17,109 INFO L225 Difference]: With dead ends: 1878 [2023-12-19 09:15:17,109 INFO L226 Difference]: Without dead ends: 1600 [2023-12-19 09:15:17,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 09:15:17,110 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 260 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 09:15:17,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1151 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 09:15:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2023-12-19 09:15:17,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1436. [2023-12-19 09:15:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1111 states have (on average 1.4878487848784878) internal successors, (1653), 1111 states have internal predecessors, (1653), 297 states have call successors, (297), 27 states have call predecessors, (297), 27 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 09:15:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2247 transitions. [2023-12-19 09:15:17,294 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2247 transitions. Word has length 211 [2023-12-19 09:15:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:15:17,294 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 2247 transitions. [2023-12-19 09:15:17,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2247 transitions. [2023-12-19 09:15:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 09:15:17,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:15:17,296 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:15:17,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 09:15:17,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 09:15:17,505 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:15:17,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:15:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash -102833427, now seen corresponding path program 1 times [2023-12-19 09:15:17,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:15:17,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842162739] [2023-12-19 09:15:17,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:17,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:15:17,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:15:17,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335741999] [2023-12-19 09:15:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:17,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:17,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:15:17,531 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:15:17,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 09:15:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:15:17,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 09:15:17,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:15:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:15:19,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:15:19,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:15:19,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842162739] [2023-12-19 09:15:19,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:15:19,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335741999] [2023-12-19 09:15:19,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335741999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:15:19,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:15:19,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:15:19,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783895484] [2023-12-19 09:15:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:15:19,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:15:19,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:15:19,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:15:19,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:15:19,186 INFO L87 Difference]: Start difference. First operand 1436 states and 2247 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:15:21,287 INFO L93 Difference]: Finished difference Result 2250 states and 3493 transitions. [2023-12-19 09:15:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 09:15:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 09:15:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:15:21,294 INFO L225 Difference]: With dead ends: 2250 [2023-12-19 09:15:21,294 INFO L226 Difference]: Without dead ends: 1972 [2023-12-19 09:15:21,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 09:15:21,296 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 604 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 09:15:21,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1316 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 09:15:21,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2023-12-19 09:15:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1731. [2023-12-19 09:15:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1334 states have (on average 1.4857571214392804) internal successors, (1982), 1334 states have internal predecessors, (1982), 363 states have call successors, (363), 33 states have call predecessors, (363), 33 states have return successors, (363), 363 states have call predecessors, (363), 363 states have call successors, (363) [2023-12-19 09:15:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2708 transitions. [2023-12-19 09:15:21,488 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2708 transitions. Word has length 211 [2023-12-19 09:15:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:15:21,489 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2708 transitions. [2023-12-19 09:15:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2708 transitions. [2023-12-19 09:15:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 09:15:21,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:15:21,490 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:15:21,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 09:15:21,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 09:15:21,697 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:15:21,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:15:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash -512959953, now seen corresponding path program 1 times [2023-12-19 09:15:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:15:21,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832005524] [2023-12-19 09:15:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:21,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:15:21,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:15:21,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060534328] [2023-12-19 09:15:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:21,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:21,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:15:21,721 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:15:21,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 09:15:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:15:22,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 09:15:22,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:15:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:15:22,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:15:22,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:15:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832005524] [2023-12-19 09:15:22,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:15:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060534328] [2023-12-19 09:15:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060534328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:15:22,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:15:22,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 09:15:22,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552985270] [2023-12-19 09:15:22,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:15:22,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 09:15:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:15:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 09:15:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 09:15:22,985 INFO L87 Difference]: Start difference. First operand 1731 states and 2708 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:15:23,851 INFO L93 Difference]: Finished difference Result 2473 states and 3863 transitions. [2023-12-19 09:15:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 09:15:23,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 09:15:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:15:23,859 INFO L225 Difference]: With dead ends: 2473 [2023-12-19 09:15:23,859 INFO L226 Difference]: Without dead ends: 1879 [2023-12-19 09:15:23,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 09:15:23,862 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 189 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 09:15:23,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 788 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 09:15:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2023-12-19 09:15:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1731. [2023-12-19 09:15:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1334 states have (on average 1.4857571214392804) internal successors, (1982), 1334 states have internal predecessors, (1982), 363 states have call successors, (363), 33 states have call predecessors, (363), 33 states have return successors, (363), 363 states have call predecessors, (363), 363 states have call successors, (363) [2023-12-19 09:15:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2708 transitions. [2023-12-19 09:15:24,074 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2708 transitions. Word has length 211 [2023-12-19 09:15:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:15:24,074 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2708 transitions. [2023-12-19 09:15:24,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2708 transitions. [2023-12-19 09:15:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 09:15:24,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:15:24,076 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:15:24,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 09:15:24,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 09:15:24,287 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:15:24,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:15:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash -455701651, now seen corresponding path program 1 times [2023-12-19 09:15:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:15:24,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513962454] [2023-12-19 09:15:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:15:24,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:15:24,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502754429] [2023-12-19 09:15:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:24,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:24,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:15:24,321 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:15:24,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 09:15:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:15:24,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 09:15:24,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:15:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:15:25,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:15:25,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:15:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513962454] [2023-12-19 09:15:25,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:15:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502754429] [2023-12-19 09:15:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502754429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:15:25,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:15:25,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:15:25,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164924154] [2023-12-19 09:15:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:15:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:15:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:15:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:15:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:15:25,883 INFO L87 Difference]: Start difference. First operand 1731 states and 2708 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:15:27,748 INFO L93 Difference]: Finished difference Result 3211 states and 5009 transitions. [2023-12-19 09:15:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 09:15:27,749 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 09:15:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:15:27,758 INFO L225 Difference]: With dead ends: 3211 [2023-12-19 09:15:27,758 INFO L226 Difference]: Without dead ends: 2617 [2023-12-19 09:15:27,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 09:15:27,760 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 459 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:15:27,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1138 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 09:15:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2023-12-19 09:15:27,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2026. [2023-12-19 09:15:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1557 states have (on average 1.4816955684007707) internal successors, (2307), 1557 states have internal predecessors, (2307), 429 states have call successors, (429), 39 states have call predecessors, (429), 39 states have return successors, (429), 429 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-19 09:15:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 3165 transitions. [2023-12-19 09:15:27,968 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 3165 transitions. Word has length 211 [2023-12-19 09:15:27,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:15:27,968 INFO L495 AbstractCegarLoop]: Abstraction has 2026 states and 3165 transitions. [2023-12-19 09:15:27,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:27,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 3165 transitions. [2023-12-19 09:15:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 09:15:27,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:15:27,969 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:15:27,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 09:15:28,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 09:15:28,179 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:15:28,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:15:28,179 INFO L85 PathProgramCache]: Analyzing trace with hash -385099646, now seen corresponding path program 1 times [2023-12-19 09:15:28,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:15:28,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047677512] [2023-12-19 09:15:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:28,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:15:28,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:15:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346987513] [2023-12-19 09:15:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:28,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:28,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:15:28,215 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:15:28,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 09:15:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:15:28,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 09:15:28,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:15:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 09:15:29,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:15:29,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:15:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047677512] [2023-12-19 09:15:29,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:15:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346987513] [2023-12-19 09:15:29,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346987513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:15:29,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:15:29,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 09:15:29,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119705564] [2023-12-19 09:15:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:15:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 09:15:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:15:29,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 09:15:29,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 09:15:29,778 INFO L87 Difference]: Start difference. First operand 2026 states and 3165 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:15:31,688 INFO L93 Difference]: Finished difference Result 3948 states and 6150 transitions. [2023-12-19 09:15:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 09:15:31,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 09:15:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:15:31,699 INFO L225 Difference]: With dead ends: 3948 [2023-12-19 09:15:31,700 INFO L226 Difference]: Without dead ends: 2142 [2023-12-19 09:15:31,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-19 09:15:31,703 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 220 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 09:15:31,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 802 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 09:15:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2023-12-19 09:15:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2046. [2023-12-19 09:15:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 1577 states have (on average 1.4730500951173113) internal successors, (2323), 1577 states have internal predecessors, (2323), 429 states have call successors, (429), 39 states have call predecessors, (429), 39 states have return successors, (429), 429 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-19 09:15:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 3181 transitions. [2023-12-19 09:15:31,896 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 3181 transitions. Word has length 211 [2023-12-19 09:15:31,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:15:31,897 INFO L495 AbstractCegarLoop]: Abstraction has 2046 states and 3181 transitions. [2023-12-19 09:15:31,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 09:15:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 3181 transitions. [2023-12-19 09:15:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-19 09:15:31,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:15:31,898 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:15:31,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 09:15:32,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:32,105 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:15:32,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:15:32,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1972155185, now seen corresponding path program 1 times [2023-12-19 09:15:32,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:15:32,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598598009] [2023-12-19 09:15:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:32,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:15:32,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:15:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402495203] [2023-12-19 09:15:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:32,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:32,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:15:32,125 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:15:32,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 09:15:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:15:32,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 09:15:32,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:15:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 878 proven. 69 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2023-12-19 09:15:32,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:15:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 27 proven. 69 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 09:15:32,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:15:32,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598598009] [2023-12-19 09:15:32,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:15:32,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402495203] [2023-12-19 09:15:32,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402495203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:15:32,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:15:32,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 09:15:32,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006860563] [2023-12-19 09:15:32,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:15:32,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 09:15:32,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:15:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 09:15:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 09:15:32,915 INFO L87 Difference]: Start difference. First operand 2046 states and 3181 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 09:15:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:15:35,488 INFO L93 Difference]: Finished difference Result 5448 states and 8327 transitions. [2023-12-19 09:15:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-19 09:15:35,489 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 212 [2023-12-19 09:15:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:15:35,508 INFO L225 Difference]: With dead ends: 5448 [2023-12-19 09:15:35,508 INFO L226 Difference]: Without dead ends: 4214 [2023-12-19 09:15:35,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=742, Invalid=2680, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 09:15:35,514 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1724 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 09:15:35,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 1955 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 09:15:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2023-12-19 09:15:35,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 3118. [2023-12-19 09:15:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 2312 states have (on average 1.435121107266436) internal successors, (3318), 2318 states have internal predecessors, (3318), 711 states have call successors, (711), 94 states have call predecessors, (711), 94 states have return successors, (711), 705 states have call predecessors, (711), 711 states have call successors, (711) [2023-12-19 09:15:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4740 transitions. [2023-12-19 09:15:35,990 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4740 transitions. Word has length 212 [2023-12-19 09:15:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:15:35,990 INFO L495 AbstractCegarLoop]: Abstraction has 3118 states and 4740 transitions. [2023-12-19 09:15:35,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 09:15:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4740 transitions. [2023-12-19 09:15:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-19 09:15:35,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:15:35,992 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:15:35,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 09:15:36,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:36,200 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:15:36,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:15:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 836584148, now seen corresponding path program 1 times [2023-12-19 09:15:36,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:15:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383434307] [2023-12-19 09:15:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:15:36,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:15:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253438065] [2023-12-19 09:15:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:15:36,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:15:36,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:15:36,222 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:15:36,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 09:15:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:15:36,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-19 09:15:36,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:16:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 09:16:11,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 09:25:05,490 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:25:05,490 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:25:05,532 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 09:25:05,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 09:25:05,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:05,740 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 214 with TraceHistMax 33,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-50-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-19 09:25:05,745 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:25:05,747 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 09:25:05,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 09:25:05 BoogieIcfgContainer [2023-12-19 09:25:05,748 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 09:25:05,749 INFO L158 Benchmark]: Toolchain (without parser) took 868083.48ms. Allocated memory was 274.7MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 224.4MB in the beginning and 1.1GB in the end (delta: -921.3MB). Peak memory consumption was 789.0MB. Max. memory is 8.0GB. [2023-12-19 09:25:05,749 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 09:25:05,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.06ms. Allocated memory is still 274.7MB. Free memory was 224.1MB in the beginning and 207.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 09:25:05,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.00ms. Allocated memory is still 274.7MB. Free memory was 207.8MB in the beginning and 203.2MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 09:25:05,749 INFO L158 Benchmark]: Boogie Preprocessor took 178.43ms. Allocated memory is still 274.7MB. Free memory was 203.2MB in the beginning and 197.1MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 09:25:05,749 INFO L158 Benchmark]: RCFGBuilder took 773.58ms. Allocated memory is still 274.7MB. Free memory was 197.1MB in the beginning and 219.3MB in the end (delta: -22.1MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. [2023-12-19 09:25:05,750 INFO L158 Benchmark]: TraceAbstraction took 866526.09ms. Allocated memory was 274.7MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 218.7MB in the beginning and 1.1GB in the end (delta: -927.0MB). Peak memory consumption was 782.8MB. Max. memory is 8.0GB. [2023-12-19 09:25:05,750 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 499.06ms. Allocated memory is still 274.7MB. Free memory was 224.1MB in the beginning and 207.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 88.00ms. Allocated memory is still 274.7MB. Free memory was 207.8MB in the beginning and 203.2MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 178.43ms. Allocated memory is still 274.7MB. Free memory was 203.2MB in the beginning and 197.1MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 773.58ms. Allocated memory is still 274.7MB. Free memory was 197.1MB in the beginning and 219.3MB in the end (delta: -22.1MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. * TraceAbstraction took 866526.09ms. Allocated memory was 274.7MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 218.7MB in the beginning and 1.1GB in the end (delta: -927.0MB). Peak memory consumption was 782.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 214 with TraceHistMax 33,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-50-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 866.5s, OverallIterations: 21, TraceHistogramMax: 33, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 136.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 7853 SdHoareTripleChecker+Valid, 82.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7816 mSDsluCounter, 18798 SdHoareTripleChecker+Invalid, 80.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14583 mSDsCounter, 1833 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10419 IncrementalHoareTripleChecker+Invalid, 12258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1833 mSolverCounterUnsat, 4215 mSDtfsCounter, 10419 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5278 GetRequests, 4879 SyntacticMatches, 1 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 108.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3118occurred in iteration=20, InterpolantAutomatonStates: 313, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 20 MinimizatonAttempts, 4192 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 147.0s InterpolantComputationTime, 4411 NumberOfCodeBlocks, 4411 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 5021 ConstructedInterpolants, 17 QuantifiedInterpolants, 45990 SizeOfPredicates, 241 NumberOfNonLiveVariables, 9997 ConjunctsInSsa, 335 ConjunctsInUnsatCore, 24 InterpolantComputations, 17 PerfectInterpolantSequences, 50019/50688 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown