/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:05:27,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:05:28,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 08:05:28,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:05:28,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:05:28,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:05:28,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:05:28,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:05:28,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:05:28,053 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:05:28,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:05:28,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:05:28,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:05:28,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:05:28,055 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:05:28,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:05:28,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:05:28,056 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:05:28,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:05:28,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:05:28,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:05:28,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:05:28,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:05:28,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:05:28,058 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:05:28,058 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:05:28,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:05:28,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:05:28,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:05:28,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:05:28,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:05:28,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:05:28,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:05:28,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:05:28,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:05:28,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:05:28,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:05:28,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:05:28,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:05:28,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:05:28,063 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:05:28,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:05:28,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:05:28,064 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:05:28,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:05:28,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:05:28,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:05:28,318 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:05:28,319 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:05:28,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-81.i [2023-12-19 08:05:29,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:05:29,744 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:05:29,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-81.i [2023-12-19 08:05:29,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/835be8830/b63021b9edd44ce192d8b8beacd0e56f/FLAGafe0a0547 [2023-12-19 08:05:29,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/835be8830/b63021b9edd44ce192d8b8beacd0e56f [2023-12-19 08:05:29,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:05:29,775 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:05:29,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:05:29,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:05:29,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:05:29,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:05:29" (1/1) ... [2023-12-19 08:05:29,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3ea241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:29, skipping insertion in model container [2023-12-19 08:05:29,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:05:29" (1/1) ... [2023-12-19 08:05:29,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:05:29,953 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-81.i[915,928] [2023-12-19 08:05:30,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:05:30,038 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:05:30,048 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-81.i[915,928] [2023-12-19 08:05:30,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:05:30,102 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:05:30,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30 WrapperNode [2023-12-19 08:05:30,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:05:30,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:05:30,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:05:30,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:05:30,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,180 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 309 [2023-12-19 08:05:30,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:05:30,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:05:30,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:05:30,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:05:30,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,213 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 08:05:30,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:05:30,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:05:30,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:05:30,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:05:30,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (1/1) ... [2023-12-19 08:05:30,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:05:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:30,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 08:05:30,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 08:05:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:05:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:05:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:05:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:05:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:05:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:05:30,453 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:05:30,455 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:05:31,056 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:05:31,108 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:05:31,108 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:05:31,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:05:31 BoogieIcfgContainer [2023-12-19 08:05:31,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:05:31,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:05:31,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:05:31,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:05:31,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:05:29" (1/3) ... [2023-12-19 08:05:31,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb051ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:05:31, skipping insertion in model container [2023-12-19 08:05:31,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:05:30" (2/3) ... [2023-12-19 08:05:31,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb051ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:05:31, skipping insertion in model container [2023-12-19 08:05:31,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:05:31" (3/3) ... [2023-12-19 08:05:31,119 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-81.i [2023-12-19 08:05:31,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:05:31,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:05:31,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:05:31,188 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;@4ee395e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:05:31,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:05:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 72 states have internal predecessors, (105), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-19 08:05:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-19 08:05:31,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:31,213 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:31,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:31,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1447787265, now seen corresponding path program 1 times [2023-12-19 08:05:31,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:31,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371777666] [2023-12-19 08:05:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:31,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:31,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:31,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371777666] [2023-12-19 08:05:31,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 08:05:31,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46785128] [2023-12-19 08:05:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:31,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:31,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:31,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:31,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 08:05:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:31,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 08:05:31,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2023-12-19 08:05:31,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:05:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46785128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:05:31,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:05:31,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 08:05:31,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419247002] [2023-12-19 08:05:31,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:05:31,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 08:05:31,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:31,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 08:05:31,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:05:31,873 INFO L87 Difference]: Start difference. First operand has 124 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 72 states have internal predecessors, (105), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-19 08:05:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:31,948 INFO L93 Difference]: Finished difference Result 245 states and 458 transitions. [2023-12-19 08:05:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 08:05:31,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 302 [2023-12-19 08:05:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:31,961 INFO L225 Difference]: With dead ends: 245 [2023-12-19 08:05:31,961 INFO L226 Difference]: Without dead ends: 122 [2023-12-19 08:05:31,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:05:31,976 INFO L413 NwaCegarLoop]: 197 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, 197 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:31,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:05:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-19 08:05:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-19 08:05:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 70 states have internal predecessors, (100), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-19 08:05:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 200 transitions. [2023-12-19 08:05:32,052 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 200 transitions. Word has length 302 [2023-12-19 08:05:32,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:32,053 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 200 transitions. [2023-12-19 08:05:32,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-19 08:05:32,054 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 200 transitions. [2023-12-19 08:05:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-19 08:05:32,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:32,061 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:32,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:32,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 08:05:32,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:32,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 381240903, now seen corresponding path program 1 times [2023-12-19 08:05:32,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:32,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517930295] [2023-12-19 08:05:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:32,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:32,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:32,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945233308] [2023-12-19 08:05:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:32,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:32,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:32,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:32,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 08:05:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:32,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 08:05:32,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1522 proven. 261 refuted. 0 times theorem prover too weak. 3117 trivial. 0 not checked. [2023-12-19 08:05:33,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:05:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 27 proven. 264 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2023-12-19 08:05:34,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517930295] [2023-12-19 08:05:34,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:05:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945233308] [2023-12-19 08:05:34,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945233308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:05:34,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:05:34,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 08:05:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899124573] [2023-12-19 08:05:34,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:05:34,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 08:05:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 08:05:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-19 08:05:34,258 INFO L87 Difference]: Start difference. First operand 122 states and 200 transitions. Second operand has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 5 states have call successors, (99), 3 states have call predecessors, (99), 7 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) [2023-12-19 08:05:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:35,201 INFO L93 Difference]: Finished difference Result 338 states and 523 transitions. [2023-12-19 08:05:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 08:05:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 5 states have call successors, (99), 3 states have call predecessors, (99), 7 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) Word has length 302 [2023-12-19 08:05:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:35,206 INFO L225 Difference]: With dead ends: 338 [2023-12-19 08:05:35,206 INFO L226 Difference]: Without dead ends: 217 [2023-12-19 08:05:35,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=834, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 08:05:35,209 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 293 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:35,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 627 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 08:05:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-19 08:05:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 169. [2023-12-19 08:05:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 103 states have (on average 1.3495145631067962) internal successors, (139), 104 states have internal predecessors, (139), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-19 08:05:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 259 transitions. [2023-12-19 08:05:35,252 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 259 transitions. Word has length 302 [2023-12-19 08:05:35,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:35,256 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 259 transitions. [2023-12-19 08:05:35,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 5 states have call successors, (99), 3 states have call predecessors, (99), 7 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) [2023-12-19 08:05:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 259 transitions. [2023-12-19 08:05:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-19 08:05:35,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:35,263 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:35,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:35,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 08:05:35,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:35,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash 89794750, now seen corresponding path program 1 times [2023-12-19 08:05:35,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:35,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241881884] [2023-12-19 08:05:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:35,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:35,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:35,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638349597] [2023-12-19 08:05:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:35,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:35,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:35,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:35,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 08:05:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:35,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 08:05:35,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:05:35,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:05:35,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:35,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241881884] [2023-12-19 08:05:35,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:05:35,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638349597] [2023-12-19 08:05:35,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638349597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:05:35,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:05:35,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 08:05:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122608217] [2023-12-19 08:05:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:05:35,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:05:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:05:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:05:35,789 INFO L87 Difference]: Start difference. First operand 169 states and 259 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:05:35,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:35,869 INFO L93 Difference]: Finished difference Result 371 states and 555 transitions. [2023-12-19 08:05:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 08:05:35,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 303 [2023-12-19 08:05:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:35,875 INFO L225 Difference]: With dead ends: 371 [2023-12-19 08:05:35,875 INFO L226 Difference]: Without dead ends: 203 [2023-12-19 08:05:35,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:05:35,879 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 58 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:35,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 539 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:05:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-19 08:05:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2023-12-19 08:05:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 127 states have (on average 1.2913385826771653) internal successors, (164), 129 states have internal predecessors, (164), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-19 08:05:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 292 transitions. [2023-12-19 08:05:35,925 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 292 transitions. Word has length 303 [2023-12-19 08:05:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:35,927 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 292 transitions. [2023-12-19 08:05:35,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:05:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 292 transitions. [2023-12-19 08:05:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-19 08:05:35,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:35,931 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:35,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:36,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:36,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:36,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash 769853120, now seen corresponding path program 1 times [2023-12-19 08:05:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286147703] [2023-12-19 08:05:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:36,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:36,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:36,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37948073] [2023-12-19 08:05:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:36,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:36,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:36,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 08:05:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:36,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 08:05:36,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1479 proven. 39 refuted. 0 times theorem prover too weak. 3382 trivial. 0 not checked. [2023-12-19 08:05:36,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:05:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 249 proven. 42 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2023-12-19 08:05:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286147703] [2023-12-19 08:05:37,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:05:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37948073] [2023-12-19 08:05:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37948073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:05:37,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:05:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-19 08:05:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107891879] [2023-12-19 08:05:37,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:05:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 08:05:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 08:05:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-19 08:05:37,310 INFO L87 Difference]: Start difference. First operand 200 states and 292 transitions. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 6 states have call successors, (100), 4 states have call predecessors, (100), 8 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) [2023-12-19 08:05:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:38,977 INFO L93 Difference]: Finished difference Result 1115 states and 1644 transitions. [2023-12-19 08:05:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 08:05:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 6 states have call successors, (100), 4 states have call predecessors, (100), 8 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) Word has length 303 [2023-12-19 08:05:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:38,987 INFO L225 Difference]: With dead ends: 1115 [2023-12-19 08:05:38,987 INFO L226 Difference]: Without dead ends: 916 [2023-12-19 08:05:38,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=539, Unknown=0, NotChecked=0, Total=812 [2023-12-19 08:05:38,990 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 686 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:38,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1442 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 08:05:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-12-19 08:05:39,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 581. [2023-12-19 08:05:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 371 states have (on average 1.2857142857142858) internal successors, (477), 378 states have internal predecessors, (477), 183 states have call successors, (183), 26 states have call predecessors, (183), 26 states have return successors, (183), 176 states have call predecessors, (183), 183 states have call successors, (183) [2023-12-19 08:05:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 843 transitions. [2023-12-19 08:05:39,101 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 843 transitions. Word has length 303 [2023-12-19 08:05:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:39,104 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 843 transitions. [2023-12-19 08:05:39,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 6 states have call successors, (100), 4 states have call predecessors, (100), 8 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) [2023-12-19 08:05:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 843 transitions. [2023-12-19 08:05:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-19 08:05:39,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:39,110 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:39,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:39,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:39,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:39,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash 988707838, now seen corresponding path program 1 times [2023-12-19 08:05:39,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:39,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744202958] [2023-12-19 08:05:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:39,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:39,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857874642] [2023-12-19 08:05:39,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:39,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:39,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:39,364 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:39,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 08:05:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:39,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 08:05:39,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1377 proven. 123 refuted. 0 times theorem prover too weak. 3400 trivial. 0 not checked. [2023-12-19 08:05:39,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:05:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 24 proven. 123 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-19 08:05:40,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:40,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744202958] [2023-12-19 08:05:40,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:05:40,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857874642] [2023-12-19 08:05:40,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857874642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:05:40,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:05:40,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 08:05:40,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801480646] [2023-12-19 08:05:40,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:05:40,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:05:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:05:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:05:40,220 INFO L87 Difference]: Start difference. First operand 581 states and 843 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2023-12-19 08:05:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:40,976 INFO L93 Difference]: Finished difference Result 1421 states and 2049 transitions. [2023-12-19 08:05:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 08:05:40,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) Word has length 303 [2023-12-19 08:05:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:40,981 INFO L225 Difference]: With dead ends: 1421 [2023-12-19 08:05:40,981 INFO L226 Difference]: Without dead ends: 841 [2023-12-19 08:05:40,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:05:40,984 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 264 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:40,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 914 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 08:05:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-19 08:05:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 642. [2023-12-19 08:05:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 410 states have (on average 1.2365853658536585) internal successors, (507), 418 states have internal predecessors, (507), 194 states have call successors, (194), 37 states have call predecessors, (194), 37 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:05:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 895 transitions. [2023-12-19 08:05:41,092 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 895 transitions. Word has length 303 [2023-12-19 08:05:41,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:41,093 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 895 transitions. [2023-12-19 08:05:41,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2023-12-19 08:05:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 895 transitions. [2023-12-19 08:05:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-19 08:05:41,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:41,097 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:41,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:41,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:41,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:41,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:41,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2068816565, now seen corresponding path program 1 times [2023-12-19 08:05:41,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:41,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909616650] [2023-12-19 08:05:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:41,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:41,341 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:41,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180821763] [2023-12-19 08:05:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:41,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:41,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:41,343 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:41,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 08:05:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:41,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:05:41,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:05:41,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:05:41,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909616650] [2023-12-19 08:05:41,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:05:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180821763] [2023-12-19 08:05:41,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180821763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:05:41,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:05:41,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:05:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014330824] [2023-12-19 08:05:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:05:41,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:05:41,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:05:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:05:41,843 INFO L87 Difference]: Start difference. First operand 642 states and 895 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:05:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:42,064 INFO L93 Difference]: Finished difference Result 1249 states and 1749 transitions. [2023-12-19 08:05:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:05:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 304 [2023-12-19 08:05:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:42,069 INFO L225 Difference]: With dead ends: 1249 [2023-12-19 08:05:42,069 INFO L226 Difference]: Without dead ends: 645 [2023-12-19 08:05:42,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:05:42,098 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 60 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:42,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 560 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:05:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-19 08:05:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 643. [2023-12-19 08:05:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 411 states have (on average 1.2360097323600974) internal successors, (508), 419 states have internal predecessors, (508), 194 states have call successors, (194), 37 states have call predecessors, (194), 37 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:05:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 896 transitions. [2023-12-19 08:05:42,172 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 896 transitions. Word has length 304 [2023-12-19 08:05:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:42,172 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 896 transitions. [2023-12-19 08:05:42,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:05:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 896 transitions. [2023-12-19 08:05:42,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:05:42,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:42,175 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:42,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:42,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:42,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:42,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:42,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1500640460, now seen corresponding path program 1 times [2023-12-19 08:05:42,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:42,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307873088] [2023-12-19 08:05:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:42,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:42,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:42,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244133837] [2023-12-19 08:05:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:42,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:42,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:42,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:42,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 08:05:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:42,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 08:05:42,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1522 proven. 261 refuted. 0 times theorem prover too weak. 3117 trivial. 0 not checked. [2023-12-19 08:05:43,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:05:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-19 08:05:44,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307873088] [2023-12-19 08:05:44,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:05:44,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244133837] [2023-12-19 08:05:44,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244133837] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:05:44,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:05:44,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-12-19 08:05:44,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944105647] [2023-12-19 08:05:44,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:05:44,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 08:05:44,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 08:05:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:05:44,624 INFO L87 Difference]: Start difference. First operand 643 states and 896 transitions. Second operand has 18 states, 17 states have (on average 7.117647058823529) internal successors, (121), 18 states have internal predecessors, (121), 5 states have call successors, (100), 4 states have call predecessors, (100), 6 states have return successors, (100), 3 states have call predecessors, (100), 5 states have call successors, (100) [2023-12-19 08:05:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:46,324 INFO L93 Difference]: Finished difference Result 1538 states and 2166 transitions. [2023-12-19 08:05:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 08:05:46,332 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.117647058823529) internal successors, (121), 18 states have internal predecessors, (121), 5 states have call successors, (100), 4 states have call predecessors, (100), 6 states have return successors, (100), 3 states have call predecessors, (100), 5 states have call successors, (100) Word has length 305 [2023-12-19 08:05:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:46,337 INFO L225 Difference]: With dead ends: 1538 [2023-12-19 08:05:46,338 INFO L226 Difference]: Without dead ends: 933 [2023-12-19 08:05:46,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=542, Invalid=1528, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 08:05:46,341 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 877 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:46,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 844 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 08:05:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-12-19 08:05:46,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 643. [2023-12-19 08:05:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 411 states have (on average 1.221411192214112) internal successors, (502), 419 states have internal predecessors, (502), 194 states have call successors, (194), 37 states have call predecessors, (194), 37 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:05:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 890 transitions. [2023-12-19 08:05:46,440 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 890 transitions. Word has length 305 [2023-12-19 08:05:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:46,440 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 890 transitions. [2023-12-19 08:05:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.117647058823529) internal successors, (121), 18 states have internal predecessors, (121), 5 states have call successors, (100), 4 states have call predecessors, (100), 6 states have return successors, (100), 3 states have call predecessors, (100), 5 states have call successors, (100) [2023-12-19 08:05:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 890 transitions. [2023-12-19 08:05:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:05:46,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:46,443 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:46,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:46,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:46,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:46,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash 489523210, now seen corresponding path program 1 times [2023-12-19 08:05:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:46,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838502875] [2023-12-19 08:05:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:46,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:46,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:46,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572134840] [2023-12-19 08:05:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:46,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:46,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:46,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:46,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 08:05:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:46,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 08:05:46,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2959 proven. 90 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2023-12-19 08:05:47,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:05:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:05:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838502875] [2023-12-19 08:05:47,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:05:47,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572134840] [2023-12-19 08:05:47,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572134840] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:05:47,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:05:47,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-19 08:05:47,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391680875] [2023-12-19 08:05:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:05:47,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 08:05:47,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 08:05:47,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-19 08:05:47,690 INFO L87 Difference]: Start difference. First operand 643 states and 890 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:05:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:48,699 INFO L93 Difference]: Finished difference Result 2185 states and 2959 transitions. [2023-12-19 08:05:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 08:05:48,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:05:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:48,707 INFO L225 Difference]: With dead ends: 2185 [2023-12-19 08:05:48,708 INFO L226 Difference]: Without dead ends: 1580 [2023-12-19 08:05:48,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:05:48,711 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 381 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:48,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 466 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 08:05:48,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2023-12-19 08:05:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 664. [2023-12-19 08:05:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 429 states have (on average 1.2261072261072261) internal successors, (526), 437 states have internal predecessors, (526), 194 states have call successors, (194), 40 states have call predecessors, (194), 40 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:05:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 914 transitions. [2023-12-19 08:05:48,920 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 914 transitions. Word has length 305 [2023-12-19 08:05:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:48,921 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 914 transitions. [2023-12-19 08:05:48,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:05:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 914 transitions. [2023-12-19 08:05:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:05:48,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:48,923 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:48,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:49,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 08:05:49,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:49,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash -140304935, now seen corresponding path program 1 times [2023-12-19 08:05:49,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:49,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778924532] [2023-12-19 08:05:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:49,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:49,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214804356] [2023-12-19 08:05:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:49,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:49,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:49,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:49,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 08:05:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:49,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 08:05:49,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2479 proven. 66 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2023-12-19 08:05:49,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:05:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:05:50,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:05:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778924532] [2023-12-19 08:05:50,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:05:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214804356] [2023-12-19 08:05:50,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214804356] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:05:50,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:05:50,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-19 08:05:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953376360] [2023-12-19 08:05:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:05:50,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 08:05:50,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:05:50,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 08:05:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-19 08:05:50,142 INFO L87 Difference]: Start difference. First operand 664 states and 914 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:05:51,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:05:51,066 INFO L93 Difference]: Finished difference Result 2215 states and 2998 transitions. [2023-12-19 08:05:51,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 08:05:51,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:05:51,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:05:51,075 INFO L225 Difference]: With dead ends: 2215 [2023-12-19 08:05:51,075 INFO L226 Difference]: Without dead ends: 1589 [2023-12-19 08:05:51,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-19 08:05:51,080 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 264 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:05:51,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 648 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 08:05:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2023-12-19 08:05:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 664. [2023-12-19 08:05:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 429 states have (on average 1.2261072261072261) internal successors, (526), 437 states have internal predecessors, (526), 194 states have call successors, (194), 40 states have call predecessors, (194), 40 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:05:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 914 transitions. [2023-12-19 08:05:51,247 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 914 transitions. Word has length 305 [2023-12-19 08:05:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:05:51,248 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 914 transitions. [2023-12-19 08:05:51,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:05:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 914 transitions. [2023-12-19 08:05:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:05:51,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:05:51,250 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:05:51,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 08:05:51,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:51,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:05:51,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:05:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash 282396891, now seen corresponding path program 1 times [2023-12-19 08:05:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:05:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469621719] [2023-12-19 08:05:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:05:51,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:05:51,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063544910] [2023-12-19 08:05:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:05:51,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:05:51,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:05:51,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:05:51,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 08:05:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:05:51,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 08:05:51,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:05:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1417 proven. 399 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-12-19 08:05:54,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:06:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:06:00,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:06:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469621719] [2023-12-19 08:06:00,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:06:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063544910] [2023-12-19 08:06:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063544910] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:06:00,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:06:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-12-19 08:06:00,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138815397] [2023-12-19 08:06:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:06:00,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:06:01,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:06:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:06:01,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-19 08:06:01,001 INFO L87 Difference]: Start difference. First operand 664 states and 914 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:06:02,233 INFO L93 Difference]: Finished difference Result 1395 states and 1916 transitions. [2023-12-19 08:06:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:06:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:06:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:06:02,238 INFO L225 Difference]: With dead ends: 1395 [2023-12-19 08:06:02,238 INFO L226 Difference]: Without dead ends: 769 [2023-12-19 08:06:02,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 08:06:02,241 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 166 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:06:02,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 865 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:06:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-12-19 08:06:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 688. [2023-12-19 08:06:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 453 states have (on average 1.2273730684326711) internal successors, (556), 461 states have internal predecessors, (556), 194 states have call successors, (194), 40 states have call predecessors, (194), 40 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:06:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 944 transitions. [2023-12-19 08:06:02,399 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 944 transitions. Word has length 305 [2023-12-19 08:06:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:06:02,400 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 944 transitions. [2023-12-19 08:06:02,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:02,400 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 944 transitions. [2023-12-19 08:06:02,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:06:02,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:06:02,406 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:06:02,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 08:06:02,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 08:06:02,615 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:06:02,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:06:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash 983461469, now seen corresponding path program 1 times [2023-12-19 08:06:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:06:02,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190716158] [2023-12-19 08:06:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:02,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:06:02,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:06:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957715431] [2023-12-19 08:06:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:02,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:06:02,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:06:02,653 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:06:02,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 08:06:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:06:02,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 08:06:02,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:06:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 100 proven. 288 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 08:06:09,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:06:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:06:13,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:06:13,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190716158] [2023-12-19 08:06:13,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:06:13,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957715431] [2023-12-19 08:06:13,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957715431] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:06:13,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:06:13,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-12-19 08:06:13,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856524579] [2023-12-19 08:06:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:06:13,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:06:13,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:06:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:06:13,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-12-19 08:06:13,470 INFO L87 Difference]: Start difference. First operand 688 states and 944 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:06:13,980 INFO L93 Difference]: Finished difference Result 1509 states and 2048 transitions. [2023-12-19 08:06:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 08:06:13,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:06:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:06:13,986 INFO L225 Difference]: With dead ends: 1509 [2023-12-19 08:06:13,986 INFO L226 Difference]: Without dead ends: 859 [2023-12-19 08:06:13,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2023-12-19 08:06:13,988 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 141 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:06:13,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 903 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:06:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-12-19 08:06:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 712. [2023-12-19 08:06:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 477 states have (on average 1.2222222222222223) internal successors, (583), 485 states have internal predecessors, (583), 194 states have call successors, (194), 40 states have call predecessors, (194), 40 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:06:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 971 transitions. [2023-12-19 08:06:14,136 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 971 transitions. Word has length 305 [2023-12-19 08:06:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:06:14,136 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 971 transitions. [2023-12-19 08:06:14,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 971 transitions. [2023-12-19 08:06:14,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:06:14,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:06:14,139 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:06:14,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 08:06:14,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 08:06:14,348 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:06:14,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:06:14,349 INFO L85 PathProgramCache]: Analyzing trace with hash 540562329, now seen corresponding path program 1 times [2023-12-19 08:06:14,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:06:14,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780931879] [2023-12-19 08:06:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:14,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:06:14,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:06:14,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824264792] [2023-12-19 08:06:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:06:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:06:14,372 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:06:14,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 08:06:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:06:14,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 08:06:14,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:06:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1629 proven. 117 refuted. 0 times theorem prover too weak. 3154 trivial. 0 not checked. [2023-12-19 08:06:16,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:06:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:06:21,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:06:21,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780931879] [2023-12-19 08:06:21,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:06:21,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824264792] [2023-12-19 08:06:21,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824264792] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:06:21,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:06:21,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2023-12-19 08:06:21,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108211121] [2023-12-19 08:06:21,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:06:21,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 08:06:21,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:06:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 08:06:21,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:06:21,215 INFO L87 Difference]: Start difference. First operand 712 states and 971 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:22,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:06:22,843 INFO L93 Difference]: Finished difference Result 1485 states and 2021 transitions. [2023-12-19 08:06:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 08:06:22,844 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:06:22,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:06:22,852 INFO L225 Difference]: With dead ends: 1485 [2023-12-19 08:06:22,852 INFO L226 Difference]: Without dead ends: 811 [2023-12-19 08:06:22,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=320, Invalid=870, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 08:06:22,855 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 140 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:06:22,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1174 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:06:22,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-12-19 08:06:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 712. [2023-12-19 08:06:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 477 states have (on average 1.2222222222222223) internal successors, (583), 485 states have internal predecessors, (583), 194 states have call successors, (194), 40 states have call predecessors, (194), 40 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:06:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 971 transitions. [2023-12-19 08:06:23,003 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 971 transitions. Word has length 305 [2023-12-19 08:06:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:06:23,004 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 971 transitions. [2023-12-19 08:06:23,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 971 transitions. [2023-12-19 08:06:23,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:06:23,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:06:23,006 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:06:23,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 08:06:23,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 08:06:23,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:06:23,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:06:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1241626907, now seen corresponding path program 1 times [2023-12-19 08:06:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:06:23,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575157532] [2023-12-19 08:06:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:23,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:06:23,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:06:23,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4856123] [2023-12-19 08:06:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:23,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:06:23,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:06:23,273 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:06:23,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 08:06:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:06:23,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 08:06:23,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:06:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:06:28,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:06:28,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:06:28,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575157532] [2023-12-19 08:06:28,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:06:28,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4856123] [2023-12-19 08:06:28,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4856123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:06:28,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:06:28,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 08:06:28,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892058628] [2023-12-19 08:06:28,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:06:28,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:06:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:06:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:06:28,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-19 08:06:28,823 INFO L87 Difference]: Start difference. First operand 712 states and 971 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:06:29,400 INFO L93 Difference]: Finished difference Result 1557 states and 2099 transitions. [2023-12-19 08:06:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 08:06:29,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:06:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:06:29,405 INFO L225 Difference]: With dead ends: 1557 [2023-12-19 08:06:29,405 INFO L226 Difference]: Without dead ends: 883 [2023-12-19 08:06:29,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-12-19 08:06:29,408 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 111 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:06:29,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 792 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:06:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-19 08:06:29,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 688. [2023-12-19 08:06:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 453 states have (on average 1.2141280353200883) internal successors, (550), 461 states have internal predecessors, (550), 194 states have call successors, (194), 40 states have call predecessors, (194), 40 states have return successors, (194), 186 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-19 08:06:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 938 transitions. [2023-12-19 08:06:29,571 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 938 transitions. Word has length 305 [2023-12-19 08:06:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:06:29,572 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 938 transitions. [2023-12-19 08:06:29,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 938 transitions. [2023-12-19 08:06:29,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:06:29,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:06:29,574 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:06:29,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 08:06:29,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 08:06:29,780 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:06:29,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:06:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1219611008, now seen corresponding path program 1 times [2023-12-19 08:06:29,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:06:29,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737090841] [2023-12-19 08:06:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:29,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:06:29,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:06:29,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187290601] [2023-12-19 08:06:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:29,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:06:29,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:06:29,806 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:06:29,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 08:06:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:06:29,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 08:06:29,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:06:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:06:29,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:06:29,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:06:29,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737090841] [2023-12-19 08:06:29,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:06:29,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187290601] [2023-12-19 08:06:29,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187290601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:06:29,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:06:29,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:06:29,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622439140] [2023-12-19 08:06:29,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:06:29,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:06:29,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:06:29,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:06:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:06:29,991 INFO L87 Difference]: Start difference. First operand 688 states and 938 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:06:30,111 INFO L93 Difference]: Finished difference Result 1355 states and 1845 transitions. [2023-12-19 08:06:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:06:30,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:06:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:06:30,115 INFO L225 Difference]: With dead ends: 1355 [2023-12-19 08:06:30,115 INFO L226 Difference]: Without dead ends: 705 [2023-12-19 08:06:30,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:06:30,118 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 25 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:06:30,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 393 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:06:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-12-19 08:06:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 634. [2023-12-19 08:06:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 414 states have (on average 1.21256038647343) internal successors, (502), 419 states have internal predecessors, (502), 182 states have call successors, (182), 37 states have call predecessors, (182), 37 states have return successors, (182), 177 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-19 08:06:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 866 transitions. [2023-12-19 08:06:30,236 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 866 transitions. Word has length 305 [2023-12-19 08:06:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:06:30,237 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 866 transitions. [2023-12-19 08:06:30,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 866 transitions. [2023-12-19 08:06:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:06:30,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:06:30,239 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:06:30,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 08:06:30,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:06:30,445 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:06:30,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:06:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1276869310, now seen corresponding path program 1 times [2023-12-19 08:06:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:06:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915851334] [2023-12-19 08:06:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:30,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:06:30,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:06:30,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749090924] [2023-12-19 08:06:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:30,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:06:30,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:06:30,480 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:06:30,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 08:06:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:06:30,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-19 08:06:30,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:06:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1623 proven. 966 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2023-12-19 08:06:48,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:06:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:06:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:06:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915851334] [2023-12-19 08:06:55,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:06:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749090924] [2023-12-19 08:06:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749090924] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:06:55,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:06:55,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [37] total 44 [2023-12-19 08:06:55,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309016149] [2023-12-19 08:06:55,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:06:55,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:06:55,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:06:55,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:06:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 08:06:55,114 INFO L87 Difference]: Start difference. First operand 634 states and 866 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:06:56,602 INFO L93 Difference]: Finished difference Result 1460 states and 1956 transitions. [2023-12-19 08:06:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 08:06:56,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:06:56,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:06:56,609 INFO L225 Difference]: With dead ends: 1460 [2023-12-19 08:06:56,609 INFO L226 Difference]: Without dead ends: 864 [2023-12-19 08:06:56,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=453, Invalid=1997, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 08:06:56,613 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 178 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:06:56,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 728 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 08:06:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-12-19 08:06:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 664. [2023-12-19 08:06:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 444 states have (on average 1.2184684684684686) internal successors, (541), 449 states have internal predecessors, (541), 182 states have call successors, (182), 37 states have call predecessors, (182), 37 states have return successors, (182), 177 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-19 08:06:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 905 transitions. [2023-12-19 08:06:56,734 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 905 transitions. Word has length 305 [2023-12-19 08:06:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:06:56,735 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 905 transitions. [2023-12-19 08:06:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 905 transitions. [2023-12-19 08:06:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:06:56,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:06:56,743 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:06:56,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 08:06:56,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 08:06:56,953 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:06:56,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:06:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1920675586, now seen corresponding path program 1 times [2023-12-19 08:06:56,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:06:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189331479] [2023-12-19 08:06:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:06:56,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:06:56,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739427047] [2023-12-19 08:06:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:56,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:06:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:06:56,985 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:06:57,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 08:06:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:06:57,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 08:06:57,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:06:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:06:57,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:06:57,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:06:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189331479] [2023-12-19 08:06:57,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:06:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739427047] [2023-12-19 08:06:57,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739427047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:06:57,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:06:57,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 08:06:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055284323] [2023-12-19 08:06:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:06:57,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:06:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:06:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:06:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:06:57,192 INFO L87 Difference]: Start difference. First operand 664 states and 905 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:57,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:06:57,364 INFO L93 Difference]: Finished difference Result 1373 states and 1866 transitions. [2023-12-19 08:06:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 08:06:57,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:06:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:06:57,367 INFO L225 Difference]: With dead ends: 1373 [2023-12-19 08:06:57,367 INFO L226 Difference]: Without dead ends: 747 [2023-12-19 08:06:57,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:06:57,369 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 61 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:06:57,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 560 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:06:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-12-19 08:06:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 670. [2023-12-19 08:06:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 450 states have (on average 1.2155555555555555) internal successors, (547), 455 states have internal predecessors, (547), 182 states have call successors, (182), 37 states have call predecessors, (182), 37 states have return successors, (182), 177 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-19 08:06:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 911 transitions. [2023-12-19 08:06:57,475 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 911 transitions. Word has length 305 [2023-12-19 08:06:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:06:57,475 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 911 transitions. [2023-12-19 08:06:57,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:06:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 911 transitions. [2023-12-19 08:06:57,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:06:57,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:06:57,477 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:06:57,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 08:06:57,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 08:06:57,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:06:57,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:06:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1535034748, now seen corresponding path program 1 times [2023-12-19 08:06:57,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:06:57,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402177139] [2023-12-19 08:06:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:06:57,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:06:57,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425188204] [2023-12-19 08:06:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:06:57,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:06:57,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:06:57,709 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:06:57,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 08:06:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:06:57,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 08:06:57,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:07:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 100 proven. 288 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 08:07:10,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:07:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:07:14,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:07:14,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402177139] [2023-12-19 08:07:14,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:07:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425188204] [2023-12-19 08:07:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425188204] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:07:14,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:07:14,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-12-19 08:07:14,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474405877] [2023-12-19 08:07:14,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:07:14,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:07:14,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:07:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:07:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-12-19 08:07:14,992 INFO L87 Difference]: Start difference. First operand 670 states and 911 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:07:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:07:16,064 INFO L93 Difference]: Finished difference Result 1422 states and 1910 transitions. [2023-12-19 08:07:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 08:07:16,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-19 08:07:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:07:16,070 INFO L225 Difference]: With dead ends: 1422 [2023-12-19 08:07:16,070 INFO L226 Difference]: Without dead ends: 790 [2023-12-19 08:07:16,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2023-12-19 08:07:16,072 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 136 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:07:16,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 752 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 08:07:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-12-19 08:07:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 670. [2023-12-19 08:07:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 450 states have (on average 1.2155555555555555) internal successors, (547), 455 states have internal predecessors, (547), 182 states have call successors, (182), 37 states have call predecessors, (182), 37 states have return successors, (182), 177 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-19 08:07:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 911 transitions. [2023-12-19 08:07:16,179 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 911 transitions. Word has length 305 [2023-12-19 08:07:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:07:16,180 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 911 transitions. [2023-12-19 08:07:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:07:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 911 transitions. [2023-12-19 08:07:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 08:07:16,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:07:16,182 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:07:16,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 08:07:16,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 08:07:16,391 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:07:16,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:07:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash 690063296, now seen corresponding path program 1 times [2023-12-19 08:07:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:07:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570257659] [2023-12-19 08:07:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:07:16,432 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:07:16,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163888285] [2023-12-19 08:07:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:16,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:07:16,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:07:16,435 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:07:16,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 08:07:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:07:16,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 08:07:16,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:07:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 49 proven. 147 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-12-19 08:07:17,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:07:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-19 08:07:18,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:07:18,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570257659] [2023-12-19 08:07:18,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:07:18,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163888285] [2023-12-19 08:07:18,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163888285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:07:18,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:07:18,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 08:07:18,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808784213] [2023-12-19 08:07:18,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:07:18,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 08:07:18,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:07:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 08:07:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:07:18,752 INFO L87 Difference]: Start difference. First operand 670 states and 911 transitions. Second operand has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 18 states have internal predecessors, (110), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-19 08:07:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:07:20,349 INFO L93 Difference]: Finished difference Result 1699 states and 2306 transitions. [2023-12-19 08:07:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:07:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 18 states have internal predecessors, (110), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) Word has length 305 [2023-12-19 08:07:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:07:20,355 INFO L225 Difference]: With dead ends: 1699 [2023-12-19 08:07:20,355 INFO L226 Difference]: Without dead ends: 1067 [2023-12-19 08:07:20,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-19 08:07:20,357 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 552 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:07:20,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1067 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 08:07:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2023-12-19 08:07:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 835. [2023-12-19 08:07:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 572 states have (on average 1.2622377622377623) internal successors, (722), 576 states have internal predecessors, (722), 221 states have call successors, (221), 41 states have call predecessors, (221), 41 states have return successors, (221), 217 states have call predecessors, (221), 221 states have call successors, (221) [2023-12-19 08:07:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1164 transitions. [2023-12-19 08:07:20,513 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1164 transitions. Word has length 305 [2023-12-19 08:07:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:07:20,514 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1164 transitions. [2023-12-19 08:07:20,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 18 states have internal predecessors, (110), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-19 08:07:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1164 transitions. [2023-12-19 08:07:20,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-19 08:07:20,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:07:20,516 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:07:20,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 08:07:20,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 08:07:20,725 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:07:20,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:07:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash 853189775, now seen corresponding path program 1 times [2023-12-19 08:07:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:07:20,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063741571] [2023-12-19 08:07:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:07:20,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:07:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913766792] [2023-12-19 08:07:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:20,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:07:20,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:07:20,747 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:07:20,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 08:07:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:07:21,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 08:07:21,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:07:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 100 proven. 288 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 08:07:31,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:07:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:07:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:07:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063741571] [2023-12-19 08:07:36,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:07:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913766792] [2023-12-19 08:07:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913766792] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:07:36,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:07:36,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-19 08:07:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30511465] [2023-12-19 08:07:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:07:36,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:07:36,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:07:36,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:07:36,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2023-12-19 08:07:36,690 INFO L87 Difference]: Start difference. First operand 835 states and 1164 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:07:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:07:37,385 INFO L93 Difference]: Finished difference Result 1623 states and 2211 transitions. [2023-12-19 08:07:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 08:07:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 306 [2023-12-19 08:07:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:07:37,390 INFO L225 Difference]: With dead ends: 1623 [2023-12-19 08:07:37,390 INFO L226 Difference]: Without dead ends: 991 [2023-12-19 08:07:37,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2023-12-19 08:07:37,393 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 243 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:07:37,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 697 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:07:37,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-12-19 08:07:37,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 841. [2023-12-19 08:07:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 578 states have (on average 1.2698961937716262) internal successors, (734), 582 states have internal predecessors, (734), 221 states have call successors, (221), 41 states have call predecessors, (221), 41 states have return successors, (221), 217 states have call predecessors, (221), 221 states have call successors, (221) [2023-12-19 08:07:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1176 transitions. [2023-12-19 08:07:37,571 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1176 transitions. Word has length 306 [2023-12-19 08:07:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:07:37,572 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1176 transitions. [2023-12-19 08:07:37,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:07:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1176 transitions. [2023-12-19 08:07:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-19 08:07:37,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:07:37,575 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:07:37,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 08:07:37,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:07:37,791 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:07:37,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:07:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1496996051, now seen corresponding path program 1 times [2023-12-19 08:07:37,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:07:37,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162461751] [2023-12-19 08:07:37,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:37,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:07:37,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:07:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59709449] [2023-12-19 08:07:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:37,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:07:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:07:37,847 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:07:37,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 08:07:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:07:38,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 08:07:38,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:07:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 49 proven. 147 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-12-19 08:07:38,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:07:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-19 08:07:39,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:07:39,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162461751] [2023-12-19 08:07:39,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:07:39,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59709449] [2023-12-19 08:07:39,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59709449] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:07:39,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:07:39,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-12-19 08:07:39,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545422202] [2023-12-19 08:07:39,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:07:39,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 08:07:39,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:07:39,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 08:07:39,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-19 08:07:39,029 INFO L87 Difference]: Start difference. First operand 841 states and 1176 transitions. Second operand has 15 states, 14 states have (on average 7.785714285714286) internal successors, (109), 15 states have internal predecessors, (109), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-19 08:07:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:07:40,177 INFO L93 Difference]: Finished difference Result 1820 states and 2449 transitions. [2023-12-19 08:07:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 08:07:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.785714285714286) internal successors, (109), 15 states have internal predecessors, (109), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) Word has length 306 [2023-12-19 08:07:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:07:40,183 INFO L225 Difference]: With dead ends: 1820 [2023-12-19 08:07:40,183 INFO L226 Difference]: Without dead ends: 1182 [2023-12-19 08:07:40,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-12-19 08:07:40,186 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 516 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:07:40,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 844 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 08:07:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-12-19 08:07:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 844. [2023-12-19 08:07:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 581 states have (on average 1.2736660929432013) internal successors, (740), 585 states have internal predecessors, (740), 221 states have call successors, (221), 41 states have call predecessors, (221), 41 states have return successors, (221), 217 states have call predecessors, (221), 221 states have call successors, (221) [2023-12-19 08:07:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1182 transitions. [2023-12-19 08:07:40,418 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1182 transitions. Word has length 306 [2023-12-19 08:07:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:07:40,418 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1182 transitions. [2023-12-19 08:07:40,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.785714285714286) internal successors, (109), 15 states have internal predecessors, (109), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-19 08:07:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1182 transitions. [2023-12-19 08:07:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-19 08:07:40,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:07:40,421 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:07:40,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 08:07:40,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:07:40,622 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:07:40,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:07:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1111355213, now seen corresponding path program 1 times [2023-12-19 08:07:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:07:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826758365] [2023-12-19 08:07:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:07:40,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:07:40,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955576064] [2023-12-19 08:07:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:40,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:07:40,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:07:40,645 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:07:40,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 08:07:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:07:40,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 08:07:40,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:07:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 100 proven. 288 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 08:07:50,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:07:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:07:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:07:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826758365] [2023-12-19 08:07:55,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:07:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955576064] [2023-12-19 08:07:55,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955576064] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:07:55,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:07:55,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-19 08:07:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675849606] [2023-12-19 08:07:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:07:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:07:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:07:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:07:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2023-12-19 08:07:55,773 INFO L87 Difference]: Start difference. First operand 844 states and 1182 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:07:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:07:56,445 INFO L93 Difference]: Finished difference Result 1614 states and 2208 transitions. [2023-12-19 08:07:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 08:07:56,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 306 [2023-12-19 08:07:56,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:07:56,449 INFO L225 Difference]: With dead ends: 1614 [2023-12-19 08:07:56,449 INFO L226 Difference]: Without dead ends: 976 [2023-12-19 08:07:56,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2023-12-19 08:07:56,451 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 171 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:07:56,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 541 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:07:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-19 08:07:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 832. [2023-12-19 08:07:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 569 states have (on average 1.2741652021089631) internal successors, (725), 573 states have internal predecessors, (725), 221 states have call successors, (221), 41 states have call predecessors, (221), 41 states have return successors, (221), 217 states have call predecessors, (221), 221 states have call successors, (221) [2023-12-19 08:07:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1167 transitions. [2023-12-19 08:07:56,608 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1167 transitions. Word has length 306 [2023-12-19 08:07:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:07:56,609 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1167 transitions. [2023-12-19 08:07:56,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:07:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1167 transitions. [2023-12-19 08:07:56,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-19 08:07:56,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:07:56,611 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:07:56,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-19 08:07:56,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:07:56,824 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:07:56,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:07:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 475927697, now seen corresponding path program 1 times [2023-12-19 08:07:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:07:56,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306316764] [2023-12-19 08:07:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:07:56,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:07:56,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719202842] [2023-12-19 08:07:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:07:56,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:07:56,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:07:56,846 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:07:56,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 08:07:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:07:57,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 08:07:57,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:08:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 100 proven. 288 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 08:08:04,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:08:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:08:08,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:08:08,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306316764] [2023-12-19 08:08:08,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:08:08,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719202842] [2023-12-19 08:08:08,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719202842] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:08:08,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:08:08,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-19 08:08:08,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382639224] [2023-12-19 08:08:08,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:08:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:08:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:08:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:08:08,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-12-19 08:08:08,135 INFO L87 Difference]: Start difference. First operand 832 states and 1167 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:08:09,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:08:09,267 INFO L93 Difference]: Finished difference Result 1673 states and 2281 transitions. [2023-12-19 08:08:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:08:09,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 306 [2023-12-19 08:08:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:08:09,273 INFO L225 Difference]: With dead ends: 1673 [2023-12-19 08:08:09,273 INFO L226 Difference]: Without dead ends: 1035 [2023-12-19 08:08:09,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 08:08:09,276 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 167 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:08:09,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 913 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:08:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-19 08:08:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 835. [2023-12-19 08:08:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 572 states have (on average 1.277972027972028) internal successors, (731), 576 states have internal predecessors, (731), 221 states have call successors, (221), 41 states have call predecessors, (221), 41 states have return successors, (221), 217 states have call predecessors, (221), 221 states have call successors, (221) [2023-12-19 08:08:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1173 transitions. [2023-12-19 08:08:09,490 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1173 transitions. Word has length 306 [2023-12-19 08:08:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:08:09,491 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1173 transitions. [2023-12-19 08:08:09,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:08:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1173 transitions. [2023-12-19 08:08:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2023-12-19 08:08:09,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:08:09,493 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:08:09,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 08:08:09,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:08:09,706 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:08:09,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:08:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 267459744, now seen corresponding path program 1 times [2023-12-19 08:08:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:08:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113098972] [2023-12-19 08:08:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:08:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:08:09,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:08:09,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139858703] [2023-12-19 08:08:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:08:09,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:08:09,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:08:09,730 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:08:09,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 08:08:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:08:09,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 08:08:09,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:09:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:09:47,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:09:47,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:09:47,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113098972] [2023-12-19 08:09:47,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:09:47,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139858703] [2023-12-19 08:09:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139858703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:09:47,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:09:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 08:09:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322047289] [2023-12-19 08:09:47,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:09:47,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:09:47,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:09:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:09:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 08:09:47,136 INFO L87 Difference]: Start difference. First operand 835 states and 1173 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:09:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:09:47,544 INFO L93 Difference]: Finished difference Result 953 states and 1301 transitions. [2023-12-19 08:09:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 08:09:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 307 [2023-12-19 08:09:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:09:47,548 INFO L225 Difference]: With dead ends: 953 [2023-12-19 08:09:47,548 INFO L226 Difference]: Without dead ends: 951 [2023-12-19 08:09:47,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:09:47,549 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 112 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:09:47,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 831 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:09:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2023-12-19 08:09:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 859. [2023-12-19 08:09:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 590 states have (on average 1.264406779661017) internal successors, (746), 594 states have internal predecessors, (746), 221 states have call successors, (221), 47 states have call predecessors, (221), 47 states have return successors, (221), 217 states have call predecessors, (221), 221 states have call successors, (221) [2023-12-19 08:09:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1188 transitions. [2023-12-19 08:09:47,742 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1188 transitions. Word has length 307 [2023-12-19 08:09:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:09:47,742 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1188 transitions. [2023-12-19 08:09:47,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:09:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1188 transitions. [2023-12-19 08:09:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-19 08:09:47,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:09:47,744 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:09:47,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 08:09:47,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:09:47,955 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:09:47,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:09:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash -247142926, now seen corresponding path program 1 times [2023-12-19 08:09:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:09:47,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675272414] [2023-12-19 08:09:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:09:47,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:09:47,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:09:47,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423593502] [2023-12-19 08:09:47,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:09:47,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:09:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:09:47,978 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:09:47,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 08:09:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:09:48,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 08:09:48,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:09:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-19 08:09:48,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:09:48,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:09:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675272414] [2023-12-19 08:09:48,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:09:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423593502] [2023-12-19 08:09:48,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423593502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:09:48,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:09:48,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:09:48,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149886740] [2023-12-19 08:09:48,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:09:48,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:09:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:09:48,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:09:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:09:48,200 INFO L87 Difference]: Start difference. First operand 859 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:09:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:09:48,468 INFO L93 Difference]: Finished difference Result 1539 states and 2100 transitions. [2023-12-19 08:09:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:09:48,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2023-12-19 08:09:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:09:48,472 INFO L225 Difference]: With dead ends: 1539 [2023-12-19 08:09:48,472 INFO L226 Difference]: Without dead ends: 874 [2023-12-19 08:09:48,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:09:48,478 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 33 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:09:48,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 396 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:09:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2023-12-19 08:09:48,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 763. [2023-12-19 08:09:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 536 states have (on average 1.2854477611940298) internal successors, (689), 537 states have internal predecessors, (689), 191 states have call successors, (191), 35 states have call predecessors, (191), 35 states have return successors, (191), 190 states have call predecessors, (191), 191 states have call successors, (191) [2023-12-19 08:09:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1071 transitions. [2023-12-19 08:09:48,677 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1071 transitions. Word has length 308 [2023-12-19 08:09:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:09:48,677 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1071 transitions. [2023-12-19 08:09:48,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-19 08:09:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1071 transitions. [2023-12-19 08:09:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-19 08:09:48,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:09:48,679 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:09:48,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 08:09:48,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:09:48,887 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:09:48,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:09:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash -603716305, now seen corresponding path program 1 times [2023-12-19 08:09:48,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:09:48,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844370258] [2023-12-19 08:09:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:09:48,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:09:48,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:09:48,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543227312] [2023-12-19 08:09:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:09:48,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:09:48,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:09:48,932 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:09:48,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 08:09:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:09:49,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 08:09:49,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:10:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1377 proven. 123 refuted. 0 times theorem prover too weak. 3400 trivial. 0 not checked. [2023-12-19 08:10:58,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 08:19:33,053 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 08:19:33,059 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:19:33,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 08:19:33,082 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:19:33,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 08:19:33,261 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 309 with TraceHistMax 50,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-46-7-5-5-3-5-2-4-1 context. [2023-12-19 08:19:33,266 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:19:33,268 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 08:19:33,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:19:33 BoogieIcfgContainer [2023-12-19 08:19:33,271 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 08:19:33,272 INFO L158 Benchmark]: Toolchain (without parser) took 843496.90ms. Allocated memory was 185.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 142.3MB in the beginning and 902.2MB in the end (delta: -759.9MB). Peak memory consumption was 762.2MB. Max. memory is 8.0GB. [2023-12-19 08:19:33,272 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 185.6MB. Free memory was 143.9MB in the beginning and 143.8MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 08:19:33,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.79ms. Allocated memory is still 185.6MB. Free memory was 142.0MB in the beginning and 124.8MB in the end (delta: 17.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-19 08:19:33,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.19ms. Allocated memory is still 185.6MB. Free memory was 124.8MB in the beginning and 118.9MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 08:19:33,273 INFO L158 Benchmark]: Boogie Preprocessor took 91.29ms. Allocated memory is still 185.6MB. Free memory was 118.9MB in the beginning and 111.9MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-19 08:19:33,273 INFO L158 Benchmark]: RCFGBuilder took 835.47ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 111.6MB in the beginning and 186.6MB in the end (delta: -75.0MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. [2023-12-19 08:19:33,273 INFO L158 Benchmark]: TraceAbstraction took 842160.12ms. Allocated memory was 238.0MB in the beginning and 1.2GB in the end (delta: 999.3MB). Free memory was 186.1MB in the beginning and 902.2MB in the end (delta: -716.1MB). Peak memory consumption was 752.4MB. Max. memory is 8.0GB. [2023-12-19 08:19:33,274 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 185.6MB. Free memory was 143.9MB in the beginning and 143.8MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 326.79ms. Allocated memory is still 185.6MB. Free memory was 142.0MB in the beginning and 124.8MB in the end (delta: 17.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.19ms. Allocated memory is still 185.6MB. Free memory was 124.8MB in the beginning and 118.9MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 91.29ms. Allocated memory is still 185.6MB. Free memory was 118.9MB in the beginning and 111.9MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 835.47ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 111.6MB in the beginning and 186.6MB in the end (delta: -75.0MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. * TraceAbstraction took 842160.12ms. Allocated memory was 238.0MB in the beginning and 1.2GB in the end (delta: 999.3MB). Free memory was 186.1MB in the beginning and 902.2MB in the end (delta: -716.1MB). Peak memory consumption was 752.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 309 with TraceHistMax 50,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-46-7-5-5-3-5-2-4-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 842.1s, OverallIterations: 25, TraceHistogramMax: 50, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 20.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5830 SdHoareTripleChecker+Valid, 10.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5635 mSDsluCounter, 17693 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13047 mSDsCounter, 2255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9204 IncrementalHoareTripleChecker+Invalid, 11459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2255 mSolverCounterUnsat, 4646 mSDtfsCounter, 9204 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12346 GetRequests, 11856 SyntacticMatches, 1 SemanticMatches, 489 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3663 ImplicationChecksByTransitivity, 29.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=859occurred in iteration=23, InterpolantAutomatonStates: 298, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 24 MinimizatonAttempts, 4975 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 222.9s InterpolantComputationTime, 7618 NumberOfCodeBlocks, 7618 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 12153 ConstructedInterpolants, 4 QuantifiedInterpolants, 99473 SizeOfPredicates, 404 NumberOfNonLiveVariables, 16260 ConjunctsInSsa, 419 ConjunctsInUnsatCore, 40 InterpolantComputations, 18 PerfectInterpolantSequences, 191074/196000 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