/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_operatoramount_amount500_file-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:19:56,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:19:57,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:19:57,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:19:57,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:19:57,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:19:57,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:19:57,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:19:57,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:19:57,074 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:19:57,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:19:57,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:19:57,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:19:57,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:19:57,076 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:19:57,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:19:57,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:19:57,076 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:19:57,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:19:57,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:19:57,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:19:57,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:19:57,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:19:57,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:19:57,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:19:57,078 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:19:57,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:19:57,079 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:19:57,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:19:57,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:19:57,080 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:19:57,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:19:57,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:19:57,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:19:57,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:19:57,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:19:57,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:19:57,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:19:57,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:19:57,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:19:57,081 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:19:57,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:19:57,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:19:57,082 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:19:57,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:19:57,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:19:57,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:19:57,291 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:19:57,291 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:19:57,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-5.i [2023-12-15 21:19:58,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:19:58,685 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:19:58,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-5.i [2023-12-15 21:19:58,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b140a8015/0d0bbd6109fd4b80a3eef07b8d7c252a/FLAGc9d2dfc5a [2023-12-15 21:19:58,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b140a8015/0d0bbd6109fd4b80a3eef07b8d7c252a [2023-12-15 21:19:58,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:19:58,717 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:19:58,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:19:58,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:19:58,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:19:58,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:19:58" (1/1) ... [2023-12-15 21:19:58,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e34cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:58, skipping insertion in model container [2023-12-15 21:19:58,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:19:58" (1/1) ... [2023-12-15 21:19:58,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:19:58,897 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-5.i[915,928] [2023-12-15 21:19:59,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:19:59,083 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:19:59,091 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-5.i[915,928] [2023-12-15 21:19:59,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:19:59,245 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:19:59,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59 WrapperNode [2023-12-15 21:19:59,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:19:59,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:19:59,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:19:59,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:19:59,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,335 INFO L138 Inliner]: procedures = 26, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 874 [2023-12-15 21:19:59,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:19:59,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:19:59,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:19:59,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:19:59,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,360 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,404 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:19:59,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:19:59,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:19:59,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:19:59,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:19:59,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (1/1) ... [2023-12-15 21:19:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:19:59,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:59,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:19:59,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:19:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:19:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:19:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:19:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:19:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:19:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:19:59,725 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:19:59,728 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:20:00,544 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:20:00,589 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:20:00,589 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:20:00,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:20:00 BoogieIcfgContainer [2023-12-15 21:20:00,590 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:20:00,591 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:20:00,591 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:20:00,593 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:20:00,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:19:58" (1/3) ... [2023-12-15 21:20:00,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a0f9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:20:00, skipping insertion in model container [2023-12-15 21:20:00,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:59" (2/3) ... [2023-12-15 21:20:00,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a0f9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:20:00, skipping insertion in model container [2023-12-15 21:20:00,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:20:00" (3/3) ... [2023-12-15 21:20:00,596 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-5.i [2023-12-15 21:20:00,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:20:00,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:20:00,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:20:00,664 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;@16c6a341, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:20:00,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:20:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 241 states have (on average 1.5726141078838174) internal successors, (379), 242 states have internal predecessors, (379), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-15 21:20:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-15 21:20:00,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:00,748 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:00,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:00,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1547210489, now seen corresponding path program 1 times [2023-12-15 21:20:00,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:00,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704555415] [2023-12-15 21:20:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:00,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:01,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704555415] [2023-12-15 21:20:01,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:20:01,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669653495] [2023-12-15 21:20:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:01,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:01,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:01,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:01,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:20:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:01,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:20:01,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2023-12-15 21:20:01,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669653495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:01,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:20:01,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533076034] [2023-12-15 21:20:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:01,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:20:01,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:01,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:20:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:20:01,600 INFO L87 Difference]: Start difference. First operand has 333 states, 241 states have (on average 1.5726141078838174) internal successors, (379), 242 states have internal predecessors, (379), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-15 21:20:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:01,682 INFO L93 Difference]: Finished difference Result 663 states and 1201 transitions. [2023-12-15 21:20:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:20:01,684 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) Word has length 588 [2023-12-15 21:20:01,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:01,692 INFO L225 Difference]: With dead ends: 663 [2023-12-15 21:20:01,692 INFO L226 Difference]: Without dead ends: 331 [2023-12-15 21:20:01,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:20:01,699 INFO L413 NwaCegarLoop]: 547 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, 547 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 [2023-12-15 21:20:01,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 547 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:20:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-15 21:20:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-12-15 21:20:01,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 240 states have (on average 1.55) internal successors, (372), 240 states have internal predecessors, (372), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-15 21:20:01,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 550 transitions. [2023-12-15 21:20:01,760 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 550 transitions. Word has length 588 [2023-12-15 21:20:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:01,761 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 550 transitions. [2023-12-15 21:20:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-15 21:20:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 550 transitions. [2023-12-15 21:20:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-12-15 21:20:01,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:01,771 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:01,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:01,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:20:01,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:01,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1534131165, now seen corresponding path program 1 times [2023-12-15 21:20:01,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:01,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020008075] [2023-12-15 21:20:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:02,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450870078] [2023-12-15 21:20:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:02,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:02,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:02,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:02,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:20:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:02,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:02,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-15 21:20:02,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:02,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:02,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020008075] [2023-12-15 21:20:02,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:02,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450870078] [2023-12-15 21:20:02,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450870078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:02,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:02,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:02,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485889279] [2023-12-15 21:20:02,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:02,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:02,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:02,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:02,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:02,533 INFO L87 Difference]: Start difference. First operand 331 states and 550 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:02,634 INFO L93 Difference]: Finished difference Result 987 states and 1640 transitions. [2023-12-15 21:20:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:02,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 589 [2023-12-15 21:20:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:02,645 INFO L225 Difference]: With dead ends: 987 [2023-12-15 21:20:02,645 INFO L226 Difference]: Without dead ends: 657 [2023-12-15 21:20:02,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:02,651 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 524 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:02,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1483 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:20:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-12-15 21:20:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 354. [2023-12-15 21:20:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 263 states have (on average 1.55893536121673) internal successors, (410), 263 states have internal predecessors, (410), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-15 21:20:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 588 transitions. [2023-12-15 21:20:02,701 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 588 transitions. Word has length 589 [2023-12-15 21:20:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:02,704 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 588 transitions. [2023-12-15 21:20:02,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 588 transitions. [2023-12-15 21:20:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-12-15 21:20:02,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:02,710 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:02,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:02,919 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 [2023-12-15 21:20:02,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:02,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:02,920 INFO L85 PathProgramCache]: Analyzing trace with hash -543205733, now seen corresponding path program 1 times [2023-12-15 21:20:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769065284] [2023-12-15 21:20:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:02,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:03,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:03,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828495862] [2023-12-15 21:20:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:03,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:03,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:03,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:03,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:20:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:03,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:03,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-15 21:20:03,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769065284] [2023-12-15 21:20:03,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828495862] [2023-12-15 21:20:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828495862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:03,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:03,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986458097] [2023-12-15 21:20:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:03,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:03,504 INFO L87 Difference]: Start difference. First operand 354 states and 588 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:03,553 INFO L93 Difference]: Finished difference Result 1010 states and 1677 transitions. [2023-12-15 21:20:03,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:03,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 589 [2023-12-15 21:20:03,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:03,558 INFO L225 Difference]: With dead ends: 1010 [2023-12-15 21:20:03,558 INFO L226 Difference]: Without dead ends: 657 [2023-12-15 21:20:03,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:03,560 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 481 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:03,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1112 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:20:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-12-15 21:20:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 427. [2023-12-15 21:20:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 336 states have (on average 1.6101190476190477) internal successors, (541), 336 states have internal predecessors, (541), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-15 21:20:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 719 transitions. [2023-12-15 21:20:03,585 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 719 transitions. Word has length 589 [2023-12-15 21:20:03,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:03,586 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 719 transitions. [2023-12-15 21:20:03,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 719 transitions. [2023-12-15 21:20:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-12-15 21:20:03,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:03,590 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:03,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:03,799 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 [2023-12-15 21:20:03,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:03,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1757616857, now seen corresponding path program 1 times [2023-12-15 21:20:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:03,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084203100] [2023-12-15 21:20:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:03,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:03,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887945818] [2023-12-15 21:20:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:03,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:03,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:03,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:03,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:20:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:04,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:20:04,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-15 21:20:04,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:04,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:04,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084203100] [2023-12-15 21:20:04,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:04,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887945818] [2023-12-15 21:20:04,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887945818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:04,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:20:04,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227242601] [2023-12-15 21:20:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:20:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:20:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:20:04,282 INFO L87 Difference]: Start difference. First operand 427 states and 719 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:05,069 INFO L93 Difference]: Finished difference Result 1748 states and 2901 transitions. [2023-12-15 21:20:05,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:20:05,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 589 [2023-12-15 21:20:05,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:05,075 INFO L225 Difference]: With dead ends: 1748 [2023-12-15 21:20:05,075 INFO L226 Difference]: Without dead ends: 1322 [2023-12-15 21:20:05,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:20:05,079 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 1745 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:05,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 3070 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:20:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2023-12-15 21:20:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 837. [2023-12-15 21:20:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 655 states have (on average 1.6045801526717558) internal successors, (1051), 656 states have internal predecessors, (1051), 178 states have call successors, (178), 3 states have call predecessors, (178), 3 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-15 21:20:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1407 transitions. [2023-12-15 21:20:05,241 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1407 transitions. Word has length 589 [2023-12-15 21:20:05,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:05,251 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1407 transitions. [2023-12-15 21:20:05,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1407 transitions. [2023-12-15 21:20:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-12-15 21:20:05,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:05,256 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:05,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 21:20:05,463 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 [2023-12-15 21:20:05,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:05,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1784682459, now seen corresponding path program 1 times [2023-12-15 21:20:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:05,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497294376] [2023-12-15 21:20:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:05,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:05,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43341425] [2023-12-15 21:20:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:05,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:05,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:05,508 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:05,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:20:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:05,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:20:05,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 5850 proven. 63 refuted. 0 times theorem prover too weak. 9751 trivial. 0 not checked. [2023-12-15 21:20:06,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 201 proven. 63 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-15 21:20:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497294376] [2023-12-15 21:20:06,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:06,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43341425] [2023-12-15 21:20:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43341425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:06,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 21:20:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308593839] [2023-12-15 21:20:06,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:06,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:20:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:20:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:20:06,266 INFO L87 Difference]: Start difference. First operand 837 states and 1407 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) [2023-12-15 21:20:06,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:06,715 INFO L93 Difference]: Finished difference Result 1687 states and 2825 transitions. [2023-12-15 21:20:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:20:06,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) Word has length 589 [2023-12-15 21:20:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:06,720 INFO L225 Difference]: With dead ends: 1687 [2023-12-15 21:20:06,720 INFO L226 Difference]: Without dead ends: 851 [2023-12-15 21:20:06,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:20:06,722 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1002 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:06,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1135 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:20:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-15 21:20:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 845. [2023-12-15 21:20:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 661 states have (on average 1.5900151285930408) internal successors, (1051), 662 states have internal predecessors, (1051), 178 states have call successors, (178), 5 states have call predecessors, (178), 5 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-15 21:20:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1407 transitions. [2023-12-15 21:20:06,754 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1407 transitions. Word has length 589 [2023-12-15 21:20:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:06,755 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1407 transitions. [2023-12-15 21:20:06,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) [2023-12-15 21:20:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1407 transitions. [2023-12-15 21:20:06,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-15 21:20:06,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:06,759 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:06,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:06,966 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 [2023-12-15 21:20:06,966 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:06,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash 932048096, now seen corresponding path program 1 times [2023-12-15 21:20:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067628269] [2023-12-15 21:20:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:07,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:07,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683744742] [2023-12-15 21:20:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:07,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:07,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:07,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:07,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:20:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:07,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:20:07,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 6864 proven. 180 refuted. 0 times theorem prover too weak. 8620 trivial. 0 not checked. [2023-12-15 21:20:07,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 84 proven. 180 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-15 21:20:08,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067628269] [2023-12-15 21:20:08,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683744742] [2023-12-15 21:20:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683744742] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:08,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-15 21:20:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660891584] [2023-12-15 21:20:08,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:20:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:08,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:20:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:20:08,089 INFO L87 Difference]: Start difference. First operand 845 states and 1407 transitions. Second operand has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-12-15 21:20:08,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:08,542 INFO L93 Difference]: Finished difference Result 1703 states and 2825 transitions. [2023-12-15 21:20:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:20:08,543 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) Word has length 590 [2023-12-15 21:20:08,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:08,546 INFO L225 Difference]: With dead ends: 1703 [2023-12-15 21:20:08,547 INFO L226 Difference]: Without dead ends: 859 [2023-12-15 21:20:08,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1183 GetRequests, 1169 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:20:08,550 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 963 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:08,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1373 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:20:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-12-15 21:20:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 853. [2023-12-15 21:20:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 667 states have (on average 1.5727136431784108) internal successors, (1049), 668 states have internal predecessors, (1049), 178 states have call successors, (178), 7 states have call predecessors, (178), 7 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-15 21:20:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1405 transitions. [2023-12-15 21:20:08,588 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1405 transitions. Word has length 590 [2023-12-15 21:20:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:08,589 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1405 transitions. [2023-12-15 21:20:08,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-12-15 21:20:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1405 transitions. [2023-12-15 21:20:08,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-15 21:20:08,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:08,593 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:08,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 21:20:08,800 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 [2023-12-15 21:20:08,800 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:08,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash 514651490, now seen corresponding path program 1 times [2023-12-15 21:20:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:08,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346229796] [2023-12-15 21:20:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:08,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:08,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676158712] [2023-12-15 21:20:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:08,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:08,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:08,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:08,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:20:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:09,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:20:09,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 5758 proven. 201 refuted. 0 times theorem prover too weak. 9705 trivial. 0 not checked. [2023-12-15 21:20:09,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 63 proven. 201 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-15 21:20:10,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:10,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346229796] [2023-12-15 21:20:10,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:10,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676158712] [2023-12-15 21:20:10,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676158712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:10,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:10,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-15 21:20:10,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730155709] [2023-12-15 21:20:10,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:10,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:20:10,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:10,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:20:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:20:10,048 INFO L87 Difference]: Start difference. First operand 853 states and 1405 transitions. Second operand has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 2 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 2 states have call predecessors, (157), 2 states have call successors, (157) [2023-12-15 21:20:10,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:10,575 INFO L93 Difference]: Finished difference Result 1737 states and 2832 transitions. [2023-12-15 21:20:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 21:20:10,577 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 2 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 2 states have call predecessors, (157), 2 states have call successors, (157) Word has length 590 [2023-12-15 21:20:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:10,585 INFO L225 Difference]: With dead ends: 1737 [2023-12-15 21:20:10,585 INFO L226 Difference]: Without dead ends: 885 [2023-12-15 21:20:10,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1187 GetRequests, 1169 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:20:10,587 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1045 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:10,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1282 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:20:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-15 21:20:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 869. [2023-12-15 21:20:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 678 states have (on average 1.5427728613569323) internal successors, (1046), 679 states have internal predecessors, (1046), 178 states have call successors, (178), 12 states have call predecessors, (178), 12 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-15 21:20:10,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1402 transitions. [2023-12-15 21:20:10,648 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1402 transitions. Word has length 590 [2023-12-15 21:20:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:10,649 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1402 transitions. [2023-12-15 21:20:10,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 2 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 2 states have call predecessors, (157), 2 states have call successors, (157) [2023-12-15 21:20:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1402 transitions. [2023-12-15 21:20:10,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-15 21:20:10,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:10,653 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:10,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 21:20:10,861 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 [2023-12-15 21:20:10,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:10,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash 802425673, now seen corresponding path program 1 times [2023-12-15 21:20:10,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:10,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608453011] [2023-12-15 21:20:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:10,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:10,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:10,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044878437] [2023-12-15 21:20:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:10,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:10,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:10,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:10,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:20:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:11,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:20:11,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 4728 proven. 216 refuted. 0 times theorem prover too weak. 10720 trivial. 0 not checked. [2023-12-15 21:20:12,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 48 proven. 216 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-15 21:20:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608453011] [2023-12-15 21:20:13,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044878437] [2023-12-15 21:20:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044878437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:13,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:13,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-12-15 21:20:13,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375669473] [2023-12-15 21:20:13,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:13,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 21:20:13,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 21:20:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:20:13,066 INFO L87 Difference]: Start difference. First operand 869 states and 1402 transitions. Second operand has 18 states, 18 states have (on average 13.666666666666666) internal successors, (246), 18 states have internal predecessors, (246), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) [2023-12-15 21:20:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:17,299 INFO L93 Difference]: Finished difference Result 6251 states and 9967 transitions. [2023-12-15 21:20:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-15 21:20:17,299 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.666666666666666) internal successors, (246), 18 states have internal predecessors, (246), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) Word has length 591 [2023-12-15 21:20:17,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:17,316 INFO L225 Difference]: With dead ends: 6251 [2023-12-15 21:20:17,316 INFO L226 Difference]: Without dead ends: 5383 [2023-12-15 21:20:17,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=592, Invalid=2378, Unknown=0, NotChecked=0, Total=2970 [2023-12-15 21:20:17,320 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 8605 mSDsluCounter, 4812 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 2879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8641 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 5895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2879 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:17,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8641 Valid, 5521 Invalid, 5895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2879 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 21:20:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2023-12-15 21:20:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 3517. [2023-12-15 21:20:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2893 states have (on average 1.5592810231593501) internal successors, (4511), 2902 states have internal predecessors, (4511), 580 states have call successors, (580), 43 states have call predecessors, (580), 43 states have return successors, (580), 571 states have call predecessors, (580), 580 states have call successors, (580) [2023-12-15 21:20:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 5671 transitions. [2023-12-15 21:20:17,530 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 5671 transitions. Word has length 591 [2023-12-15 21:20:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:17,530 INFO L495 AbstractCegarLoop]: Abstraction has 3517 states and 5671 transitions. [2023-12-15 21:20:17,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.666666666666666) internal successors, (246), 18 states have internal predecessors, (246), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) [2023-12-15 21:20:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 5671 transitions. [2023-12-15 21:20:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-15 21:20:17,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:17,536 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:17,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:17,743 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 [2023-12-15 21:20:17,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:17,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:17,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1481697927, now seen corresponding path program 1 times [2023-12-15 21:20:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:17,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178993255] [2023-12-15 21:20:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:17,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:17,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740543069] [2023-12-15 21:20:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:17,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:17,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:17,848 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:17,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:20:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:18,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 21:20:18,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 4014 proven. 225 refuted. 0 times theorem prover too weak. 11425 trivial. 0 not checked. [2023-12-15 21:20:19,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 39 proven. 225 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-15 21:20:19,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178993255] [2023-12-15 21:20:19,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740543069] [2023-12-15 21:20:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740543069] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:19,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-12-15 21:20:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552895948] [2023-12-15 21:20:19,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:19,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:20:19,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:20:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:20:19,902 INFO L87 Difference]: Start difference. First operand 3517 states and 5671 transitions. Second operand has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) [2023-12-15 21:20:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:21,861 INFO L93 Difference]: Finished difference Result 14530 states and 23340 transitions. [2023-12-15 21:20:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 21:20:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) Word has length 591 [2023-12-15 21:20:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:21,894 INFO L225 Difference]: With dead ends: 14530 [2023-12-15 21:20:21,894 INFO L226 Difference]: Without dead ends: 11681 [2023-12-15 21:20:21,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 1173 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2023-12-15 21:20:21,901 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 4825 mSDsluCounter, 3849 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 1039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1039 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:21,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4853 Valid, 4621 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1039 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 21:20:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11681 states. [2023-12-15 21:20:22,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11681 to 7985. [2023-12-15 21:20:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7985 states, 6720 states have (on average 1.5537202380952382) internal successors, (10441), 6744 states have internal predecessors, (10441), 1149 states have call successors, (1149), 115 states have call predecessors, (1149), 115 states have return successors, (1149), 1125 states have call predecessors, (1149), 1149 states have call successors, (1149) [2023-12-15 21:20:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7985 states to 7985 states and 12739 transitions. [2023-12-15 21:20:22,359 INFO L78 Accepts]: Start accepts. Automaton has 7985 states and 12739 transitions. Word has length 591 [2023-12-15 21:20:22,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:22,360 INFO L495 AbstractCegarLoop]: Abstraction has 7985 states and 12739 transitions. [2023-12-15 21:20:22,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) [2023-12-15 21:20:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7985 states and 12739 transitions. [2023-12-15 21:20:22,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-15 21:20:22,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:22,366 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:22,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:22,573 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 [2023-12-15 21:20:22,574 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:22,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:22,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1087331141, now seen corresponding path program 1 times [2023-12-15 21:20:22,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:22,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631139744] [2023-12-15 21:20:22,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:22,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:22,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:22,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650108890] [2023-12-15 21:20:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:22,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:22,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:22,634 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:22,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:20:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:22,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:20:22,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 4614 proven. 45 refuted. 0 times theorem prover too weak. 11005 trivial. 0 not checked. [2023-12-15 21:20:23,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-15 21:20:23,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631139744] [2023-12-15 21:20:23,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650108890] [2023-12-15 21:20:23,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650108890] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:20:23,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:20:23,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2023-12-15 21:20:23,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38336242] [2023-12-15 21:20:23,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:20:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:20:23,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:20:23,580 INFO L87 Difference]: Start difference. First operand 7985 states and 12739 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:25,675 INFO L93 Difference]: Finished difference Result 34010 states and 54667 transitions. [2023-12-15 21:20:25,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:20:25,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 591 [2023-12-15 21:20:25,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:25,735 INFO L225 Difference]: With dead ends: 34010 [2023-12-15 21:20:25,735 INFO L226 Difference]: Without dead ends: 26787 [2023-12-15 21:20:25,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1168 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2023-12-15 21:20:25,755 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 4156 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4156 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:25,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4156 Valid, 2949 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 21:20:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26787 states. [2023-12-15 21:20:26,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26787 to 8668. [2023-12-15 21:20:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8668 states, 7739 states have (on average 1.579403023646466) internal successors, (12223), 7763 states have internal predecessors, (12223), 821 states have call successors, (821), 107 states have call predecessors, (821), 107 states have return successors, (821), 797 states have call predecessors, (821), 821 states have call successors, (821) [2023-12-15 21:20:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 13865 transitions. [2023-12-15 21:20:26,382 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 13865 transitions. Word has length 591 [2023-12-15 21:20:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:26,382 INFO L495 AbstractCegarLoop]: Abstraction has 8668 states and 13865 transitions. [2023-12-15 21:20:26,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:26,383 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 13865 transitions. [2023-12-15 21:20:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2023-12-15 21:20:26,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:26,391 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:26,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:26,598 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 [2023-12-15 21:20:26,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:26,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1477531139, now seen corresponding path program 1 times [2023-12-15 21:20:26,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:26,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871299503] [2023-12-15 21:20:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:26,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:26,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:26,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687666401] [2023-12-15 21:20:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:26,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:26,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:26,645 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:26,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:20:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:27,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:20:27,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-15 21:20:27,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:27,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:27,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871299503] [2023-12-15 21:20:27,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:27,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687666401] [2023-12-15 21:20:27,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687666401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:27,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:27,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:20:27,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345102138] [2023-12-15 21:20:27,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:20:27,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:20:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:20:27,176 INFO L87 Difference]: Start difference. First operand 8668 states and 13865 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:28,352 INFO L93 Difference]: Finished difference Result 21224 states and 33991 transitions. [2023-12-15 21:20:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:20:28,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 592 [2023-12-15 21:20:28,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:28,375 INFO L225 Difference]: With dead ends: 21224 [2023-12-15 21:20:28,375 INFO L226 Difference]: Without dead ends: 13426 [2023-12-15 21:20:28,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:20:28,383 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2126 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:28,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2126 Valid, 2489 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:20:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13426 states. [2023-12-15 21:20:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13426 to 7939. [2023-12-15 21:20:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7939 states, 7010 states have (on average 1.5737517831669043) internal successors, (11032), 7034 states have internal predecessors, (11032), 821 states have call successors, (821), 107 states have call predecessors, (821), 107 states have return successors, (821), 797 states have call predecessors, (821), 821 states have call successors, (821) [2023-12-15 21:20:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 12674 transitions. [2023-12-15 21:20:28,884 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 12674 transitions. Word has length 592 [2023-12-15 21:20:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:28,885 INFO L495 AbstractCegarLoop]: Abstraction has 7939 states and 12674 transitions. [2023-12-15 21:20:28,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-15 21:20:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 12674 transitions. [2023-12-15 21:20:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2023-12-15 21:20:28,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:28,892 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:28,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 21:20:29,099 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 [2023-12-15 21:20:29,100 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:29,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1858048428, now seen corresponding path program 1 times [2023-12-15 21:20:29,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:29,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353342537] [2023-12-15 21:20:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:29,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:29,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306357276] [2023-12-15 21:20:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:29,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:29,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:29,151 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:29,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:20:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:29,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:20:29,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7161 proven. 540 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2023-12-15 21:20:32,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 234 proven. 549 refuted. 0 times theorem prover too weak. 14881 trivial. 0 not checked. [2023-12-15 21:20:33,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353342537] [2023-12-15 21:20:33,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306357276] [2023-12-15 21:20:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306357276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:33,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-15 21:20:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078726819] [2023-12-15 21:20:33,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:33,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 21:20:33,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 21:20:33,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:20:33,151 INFO L87 Difference]: Start difference. First operand 7939 states and 12674 transitions. Second operand has 26 states, 24 states have (on average 11.958333333333334) internal successors, (287), 24 states have internal predecessors, (287), 10 states have call successors, (178), 6 states have call predecessors, (178), 10 states have return successors, (178), 8 states have call predecessors, (178), 10 states have call successors, (178) [2023-12-15 21:20:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:36,626 INFO L93 Difference]: Finished difference Result 27706 states and 44672 transitions. [2023-12-15 21:20:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-15 21:20:36,626 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 11.958333333333334) internal successors, (287), 24 states have internal predecessors, (287), 10 states have call successors, (178), 6 states have call predecessors, (178), 10 states have return successors, (178), 8 states have call predecessors, (178), 10 states have call successors, (178) Word has length 592 [2023-12-15 21:20:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:36,656 INFO L225 Difference]: With dead ends: 27706 [2023-12-15 21:20:36,656 INFO L226 Difference]: Without dead ends: 20745 [2023-12-15 21:20:36,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1161 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=657, Invalid=1323, Unknown=0, NotChecked=0, Total=1980 [2023-12-15 21:20:36,666 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3989 mSDsluCounter, 4555 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4017 SdHoareTripleChecker+Valid, 4949 SdHoareTripleChecker+Invalid, 4064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:36,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4017 Valid, 4949 Invalid, 4064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 21:20:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20745 states. [2023-12-15 21:20:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20745 to 15026. [2023-12-15 21:20:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15026 states, 13248 states have (on average 1.5671044685990339) internal successors, (20761), 13296 states have internal predecessors, (20761), 1553 states have call successors, (1553), 224 states have call predecessors, (1553), 224 states have return successors, (1553), 1505 states have call predecessors, (1553), 1553 states have call successors, (1553) [2023-12-15 21:20:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15026 states to 15026 states and 23867 transitions. [2023-12-15 21:20:37,645 INFO L78 Accepts]: Start accepts. Automaton has 15026 states and 23867 transitions. Word has length 592 [2023-12-15 21:20:37,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:37,646 INFO L495 AbstractCegarLoop]: Abstraction has 15026 states and 23867 transitions. [2023-12-15 21:20:37,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 11.958333333333334) internal successors, (287), 24 states have internal predecessors, (287), 10 states have call successors, (178), 6 states have call predecessors, (178), 10 states have return successors, (178), 8 states have call predecessors, (178), 10 states have call successors, (178) [2023-12-15 21:20:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 15026 states and 23867 transitions. [2023-12-15 21:20:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2023-12-15 21:20:37,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:37,654 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:37,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:37,862 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 [2023-12-15 21:20:37,863 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:37,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:37,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1504965644, now seen corresponding path program 1 times [2023-12-15 21:20:37,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:37,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003007174] [2023-12-15 21:20:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:37,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:37,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504217403] [2023-12-15 21:20:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:37,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:37,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:37,909 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:37,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:20:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:38,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-15 21:20:38,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10003 proven. 327 refuted. 0 times theorem prover too weak. 5334 trivial. 0 not checked. [2023-12-15 21:20:40,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 933 proven. 357 refuted. 0 times theorem prover too weak. 14374 trivial. 0 not checked. [2023-12-15 21:20:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003007174] [2023-12-15 21:20:43,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504217403] [2023-12-15 21:20:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504217403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:43,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:43,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-15 21:20:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036563510] [2023-12-15 21:20:43,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-15 21:20:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-15 21:20:43,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2023-12-15 21:20:43,018 INFO L87 Difference]: Start difference. First operand 15026 states and 23867 transitions. Second operand has 51 states, 50 states have (on average 6.18) internal successors, (309), 49 states have internal predecessors, (309), 12 states have call successors, (178), 7 states have call predecessors, (178), 16 states have return successors, (178), 12 states have call predecessors, (178), 12 states have call successors, (178) Received shutdown request... [2023-12-15 21:21:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-15 21:21:02,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 1152 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4014 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3900, Invalid=11600, Unknown=0, NotChecked=0, Total=15500 [2023-12-15 21:21:02,072 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 24645 mSDsluCounter, 7866 mSDsCounter, 0 mSdLazyCounter, 7153 mSolverCounterSat, 5334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24665 SdHoareTripleChecker+Valid, 8405 SdHoareTripleChecker+Invalid, 12487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5334 IncrementalHoareTripleChecker+Valid, 7153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:02,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24665 Valid, 8405 Invalid, 12487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5334 Valid, 7153 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-15 21:21:02,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:21:02,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:02,086 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:21:02,086 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 [2023-12-15 21:21:02,275 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 [2023-12-15 21:21:02,276 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (15026states) and FLOYD_HOARE automaton (currently 87 states, 51 states before enhancement),while ReachableStatesComputation was computing reachable states (49291 states constructed, input type IntersectNwa). [2023-12-15 21:21:02,279 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:02,280 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:21:02,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:21:02 BoogieIcfgContainer [2023-12-15 21:21:02,282 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:21:02,282 INFO L158 Benchmark]: Toolchain (without parser) took 63564.60ms. Allocated memory was 260.0MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 204.6MB in the beginning and 1.2GB in the end (delta: -970.9MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 21:21:02,282 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 216.0MB. Free memory was 165.8MB in the beginning and 165.6MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:21:02,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.24ms. Allocated memory is still 260.0MB. Free memory was 204.4MB in the beginning and 213.9MB in the end (delta: -9.4MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-15 21:21:02,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.51ms. Allocated memory is still 260.0MB. Free memory was 213.9MB in the beginning and 195.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-15 21:21:02,283 INFO L158 Benchmark]: Boogie Preprocessor took 146.67ms. Allocated memory is still 260.0MB. Free memory was 195.0MB in the beginning and 159.8MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-15 21:21:02,283 INFO L158 Benchmark]: RCFGBuilder took 1106.53ms. Allocated memory is still 260.0MB. Free memory was 159.8MB in the beginning and 118.5MB in the end (delta: 41.3MB). Peak memory consumption was 41.3MB. Max. memory is 8.0GB. [2023-12-15 21:21:02,283 INFO L158 Benchmark]: TraceAbstraction took 61690.50ms. Allocated memory was 260.0MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 118.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-15 21:21:02,284 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 216.0MB. Free memory was 165.8MB in the beginning and 165.6MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 527.24ms. Allocated memory is still 260.0MB. Free memory was 204.4MB in the beginning and 213.9MB in the end (delta: -9.4MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 89.51ms. Allocated memory is still 260.0MB. Free memory was 213.9MB in the beginning and 195.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 146.67ms. Allocated memory is still 260.0MB. Free memory was 195.0MB in the beginning and 159.8MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1106.53ms. Allocated memory is still 260.0MB. Free memory was 159.8MB in the beginning and 118.5MB in the end (delta: 41.3MB). Peak memory consumption was 41.3MB. Max. memory is 8.0GB. * TraceAbstraction took 61690.50ms. Allocated memory was 260.0MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 118.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (15026states) and FLOYD_HOARE automaton (currently 87 states, 51 states before enhancement),while ReachableStatesComputation was computing reachable states (49291 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 333 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.6s, OverallIterations: 13, TraceHistogramMax: 89, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 34.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54355 SdHoareTripleChecker+Valid, 19.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54106 mSDsluCounter, 38936 SdHoareTripleChecker+Invalid, 16.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31194 mSDsCounter, 12217 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19236 IncrementalHoareTripleChecker+Invalid, 31453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12217 mSolverCounterUnsat, 7742 mSDtfsCounter, 19236 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12612 GetRequests, 12268 SyntacticMatches, 1 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5997 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15026occurred in iteration=12, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 35933 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 8261 NumberOfCodeBlocks, 8261 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 12378 ConstructedInterpolants, 0 QuantifiedInterpolants, 48423 SizeOfPredicates, 84 NumberOfNonLiveVariables, 17969 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 325356/328944 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